--- _id: '58612' author: - first_name: Maximina full_name: Luis-Sunga, Maximina last_name: Luis-Sunga - first_name: Alejandro full_name: González-Orive, Alejandro last_name: González-Orive - first_name: Juan Carlos full_name: Calderón, Juan Carlos last_name: Calderón - first_name: Ilaria full_name: Gamba, Ilaria last_name: Gamba - first_name: Airán full_name: Ródenas, Airán last_name: Ródenas - first_name: Maria Teresa full_name: de los Arcos de Pedro, Maria Teresa id: '54556' last_name: de los Arcos de Pedro orcid: '0000-0002-8684-273X ' - first_name: Alberto full_name: Hernández-Creus, Alberto last_name: Hernández-Creus - first_name: Guido full_name: Grundmeier, Guido id: '194' last_name: Grundmeier - first_name: Elena full_name: Pastor, Elena last_name: Pastor - first_name: Gonzalo full_name: García, Gonzalo last_name: García citation: ama: Luis-Sunga M, González-Orive A, Calderón JC, et al. Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications. ACS Applied Nano Materials. Published online 2024. doi:10.1021/acsanm.3c05949 apa: Luis-Sunga, M., González-Orive, A., Calderón, J. C., Gamba, I., Ródenas, A., de los Arcos de Pedro, M. T., Hernández-Creus, A., Grundmeier, G., Pastor, E., & García, G. (2024). Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications. ACS Applied Nano Materials. https://doi.org/10.1021/acsanm.3c05949 bibtex: '@article{Luis-Sunga_González-Orive_Calderón_Gamba_Ródenas_de los Arcos de Pedro_Hernández-Creus_Grundmeier_Pastor_García_2024, title={Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications}, DOI={10.1021/acsanm.3c05949}, journal={ACS Applied Nano Materials}, author={Luis-Sunga, Maximina and González-Orive, Alejandro and Calderón, Juan Carlos and Gamba, Ilaria and Ródenas, Airán and de los Arcos de Pedro, Maria Teresa and Hernández-Creus, Alberto and Grundmeier, Guido and Pastor, Elena and García, Gonzalo}, year={2024} }' chicago: Luis-Sunga, Maximina, Alejandro González-Orive, Juan Carlos Calderón, Ilaria Gamba, Airán Ródenas, Maria Teresa de los Arcos de Pedro, Alberto Hernández-Creus, Guido Grundmeier, Elena Pastor, and Gonzalo García. “Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications.” ACS Applied Nano Materials, 2024. https://doi.org/10.1021/acsanm.3c05949. ieee: 'M. Luis-Sunga et al., “Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications,” ACS Applied Nano Materials, 2024, doi: 10.1021/acsanm.3c05949.' mla: Luis-Sunga, Maximina, et al. “Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications.” ACS Applied Nano Materials, 2024, doi:10.1021/acsanm.3c05949. short: M. Luis-Sunga, A. González-Orive, J.C. Calderón, I. Gamba, A. Ródenas, M.T. de los Arcos de Pedro, A. Hernández-Creus, G. Grundmeier, E. Pastor, G. García, ACS Applied Nano Materials (2024). date_created: 2025-02-12T14:49:11Z date_updated: 2025-02-12T14:56:48Z department: - _id: '302' doi: 10.1021/acsanm.3c05949 language: - iso: eng publication: ACS Applied Nano Materials publication_identifier: issn: - 2574-0970 status: public title: Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications type: journal_article user_id: '54556' year: '2024' ... --- _id: '58611' abstract: - lang: eng text: AFM-IR investigation of thin PECVD SiOx films on a polypropylene substrate in the surface-sensitive mode author: - first_name: Hendrik full_name: Müller, Hendrik last_name: Müller - first_name: Hartmut full_name: Stadler, Hartmut last_name: Stadler - first_name: Maria Teresa full_name: de los Arcos de Pedro, Maria Teresa id: '54556' last_name: de los Arcos de Pedro orcid: '0000-0002-8684-273X ' - first_name: Adrian full_name: Keller, Adrian id: '48864' last_name: Keller orcid: 0000-0001-7139-3110 - first_name: Guido full_name: Grundmeier, Guido id: '194' last_name: Grundmeier citation: ama: Müller H, Stadler H, de los Arcos de Pedro MT, Keller A, Grundmeier G. AFM-IR investigation of thin PECVD SiO x films on a polypropylene substrate in the surface-sensitive mode. Beilstein Journal of Nanotechnology. 2024;15(1):603–611. doi:10.3762/bjnano.15.51 apa: Müller, H., Stadler, H., de los Arcos de Pedro, M. T., Keller, A., & Grundmeier, G. (2024). AFM-IR investigation of thin PECVD SiO x films on a polypropylene substrate in the surface-sensitive mode. Beilstein Journal of Nanotechnology, 15(1), 603–611. https://doi.org/10.3762/bjnano.15.51 bibtex: '@article{Müller_Stadler_de los Arcos de Pedro_Keller_Grundmeier_2024, title={AFM-IR investigation of thin PECVD SiO x films on a polypropylene substrate in the surface-sensitive mode}, volume={15}, DOI={10.3762/bjnano.15.51}, number={1}, journal={Beilstein Journal of Nanotechnology}, author={Müller, Hendrik and Stadler, Hartmut and de los Arcos de Pedro, Maria Teresa and Keller, Adrian and Grundmeier, Guido}, year={2024}, pages={603–611} }' chicago: 'Müller, Hendrik, Hartmut Stadler, Maria Teresa de los Arcos de Pedro, Adrian Keller, and Guido Grundmeier. “AFM-IR Investigation of Thin PECVD SiO x Films on a Polypropylene Substrate in the Surface-Sensitive Mode.” Beilstein Journal of Nanotechnology 15, no. 1 (2024): 603–611. https://doi.org/10.3762/bjnano.15.51.' ieee: 'H. Müller, H. Stadler, M. T. de los Arcos de Pedro, A. Keller, and G. Grundmeier, “AFM-IR investigation of thin PECVD SiO x films on a polypropylene substrate in the surface-sensitive mode,” Beilstein Journal of Nanotechnology, vol. 15, no. 1, pp. 603–611, 2024, doi: 10.3762/bjnano.15.51.' mla: Müller, Hendrik, et al. “AFM-IR Investigation of Thin PECVD SiO x Films on a Polypropylene Substrate in the Surface-Sensitive Mode.” Beilstein Journal of Nanotechnology, vol. 15, no. 1, 2024, pp. 603–611, doi:10.3762/bjnano.15.51. short: H. Müller, H. Stadler, M.T. de los Arcos de Pedro, A. Keller, G. Grundmeier, Beilstein Journal of Nanotechnology 15 (2024) 603–611. date_created: 2025-02-12T14:48:49Z date_updated: 2025-02-12T14:56:14Z department: - _id: '302' doi: 10.3762/bjnano.15.51 intvolume: ' 15' issue: '1' language: - iso: eng page: 603–611 publication: Beilstein Journal of Nanotechnology publication_identifier: issn: - 2190-4286 status: public title: AFM-IR investigation of thin PECVD SiO x films on a polypropylene substrate in the surface-sensitive mode type: journal_article user_id: '54556' volume: 15 year: '2024' ... --- _id: '58696' author: - first_name: Emanuele full_name: Tortoli, Emanuele last_name: Tortoli - first_name: Alli full_name: Gokeler, Alli last_name: Gokeler - first_name: Igor full_name: Tak, Igor last_name: Tak - first_name: Leonardo full_name: Pellicciari, Leonardo last_name: Pellicciari - first_name: Grant full_name: Norte, Grant last_name: Norte citation: ama: Tortoli E, Gokeler A, Tak I, Pellicciari L, Norte G. Is Visual Reliance Increased in Athletes After ACL Injury? A Scoping Review. Sports Medicine. 2024;54(10):2531-2556. doi:10.1007/s40279-024-02085-2 apa: Tortoli, E., Gokeler, A., Tak, I., Pellicciari, L., & Norte, G. (2024). Is Visual Reliance Increased in Athletes After ACL Injury? A Scoping Review. Sports Medicine, 54(10), 2531–2556. https://doi.org/10.1007/s40279-024-02085-2 bibtex: '@article{Tortoli_Gokeler_Tak_Pellicciari_Norte_2024, title={Is Visual Reliance Increased in Athletes After ACL Injury? A Scoping Review}, volume={54}, DOI={10.1007/s40279-024-02085-2}, number={10}, journal={Sports Medicine}, publisher={Springer Science and Business Media LLC}, author={Tortoli, Emanuele and Gokeler, Alli and Tak, Igor and Pellicciari, Leonardo and Norte, Grant}, year={2024}, pages={2531–2556} }' chicago: 'Tortoli, Emanuele, Alli Gokeler, Igor Tak, Leonardo Pellicciari, and Grant Norte. “Is Visual Reliance Increased in Athletes After ACL Injury? A Scoping Review.” Sports Medicine 54, no. 10 (2024): 2531–56. https://doi.org/10.1007/s40279-024-02085-2.' ieee: 'E. Tortoli, A. Gokeler, I. Tak, L. Pellicciari, and G. Norte, “Is Visual Reliance Increased in Athletes After ACL Injury? A Scoping Review,” Sports Medicine, vol. 54, no. 10, pp. 2531–2556, 2024, doi: 10.1007/s40279-024-02085-2.' mla: Tortoli, Emanuele, et al. “Is Visual Reliance Increased in Athletes After ACL Injury? A Scoping Review.” Sports Medicine, vol. 54, no. 10, Springer Science and Business Media LLC, 2024, pp. 2531–56, doi:10.1007/s40279-024-02085-2. short: E. Tortoli, A. Gokeler, I. Tak, L. Pellicciari, G. Norte, Sports Medicine 54 (2024) 2531–2556. date_created: 2025-02-18T14:42:00Z date_updated: 2025-02-18T14:42:13Z department: - _id: '172' doi: 10.1007/s40279-024-02085-2 intvolume: ' 54' issue: '10' language: - iso: eng page: 2531-2556 publication: Sports Medicine publication_identifier: issn: - 0112-1642 - 1179-2035 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Is Visual Reliance Increased in Athletes After ACL Injury? A Scoping Review type: journal_article user_id: '46' volume: 54 year: '2024' ... --- _id: '58747' abstract: - lang: eng text: AbstractAlthough achievement situations trigger multiple emotions and learners experience both negative and positive emotions simultaneously, procrastination research typically examines isolated relationships between specific emotions and procrastination. The potential interplay of negative and positive emotions regarding procrastination is often overlooked, although this perspective can shed light on their dynamic relationships. Moreover, past studies primarily address the behavioral aspect of procrastination (delay) while overlooking its emotional facet (subjective discomfort), albeit this differentiation could enhance understanding of procrastination and its correlates. The present study explores the understudied interplay of the two most frequently experienced negative (anxiety) and positive (hope) exam-related emotions regarding students’ procrastination tendencies with differentiated behavioral and emotional dimensions. The study analyzes cross-sectional data from two independent studies (Nstudy1 = 266, Nstudy2 = 468) conducted in Germany among university students. Latent profile analyses (LPA) reveal three similar profiles across both studies—High Anxiety–Low Hope, Low Anxiety–High Hope and Moderate Anxiety–Moderate Hope— and two study-specific profiles namely, Low Anxiety–Moderate Hope (Study 1) and High Anxiety–Moderate Hope (Study 2). Females compared to males are more likely to belong to the anxiety-dominated profiles. Overall, students in anxiety-dominated profiles report higher scores whereas students in hope-dominated profiles report lower scores on both behavioral and emotional dimensions of academic procrastination. This study advances an integrated approach that incorporates the combined effects of both negative and positive emotions concerning procrastination. Findings further inform research efforts towards identifying risk and protective emotional factors to develop tailored intervention against academic procrastination. author: - first_name: Christopher K. full_name: Gadosey, Christopher K. last_name: Gadosey - first_name: Derya full_name: Turhan, Derya last_name: Turhan - first_name: Theresa full_name: Wenker, Theresa last_name: Wenker - first_name: Lena S. full_name: Kegel, Lena S. last_name: Kegel - first_name: Julia full_name: Bobe, Julia last_name: Bobe - first_name: Laura full_name: Thomas, Laura last_name: Thomas - first_name: Ulrike full_name: Buhlmann, Ulrike last_name: Buhlmann - first_name: Stefan full_name: Fries, Stefan last_name: Fries - first_name: Carola full_name: Grunschel, Carola last_name: Grunschel citation: ama: Gadosey CK, Turhan D, Wenker T, et al. Relationship between the intraindividual interplay of negative and positive exam-related emotions and the behavioral-emotional dimensions of academic procrastination. Current Psychology. 2024;43(40):31476-31494. doi:10.1007/s12144-024-06719-6 apa: Gadosey, C. K., Turhan, D., Wenker, T., Kegel, L. S., Bobe, J., Thomas, L., Buhlmann, U., Fries, S., & Grunschel, C. (2024). Relationship between the intraindividual interplay of negative and positive exam-related emotions and the behavioral-emotional dimensions of academic procrastination. Current Psychology, 43(40), 31476–31494. https://doi.org/10.1007/s12144-024-06719-6 bibtex: '@article{Gadosey_Turhan_Wenker_Kegel_Bobe_Thomas_Buhlmann_Fries_Grunschel_2024, title={Relationship between the intraindividual interplay of negative and positive exam-related emotions and the behavioral-emotional dimensions of academic procrastination}, volume={43}, DOI={10.1007/s12144-024-06719-6}, number={40}, journal={Current Psychology}, publisher={Springer Science and Business Media LLC}, author={Gadosey, Christopher K. and Turhan, Derya and Wenker, Theresa and Kegel, Lena S. and Bobe, Julia and Thomas, Laura and Buhlmann, Ulrike and Fries, Stefan and Grunschel, Carola}, year={2024}, pages={31476–31494} }' chicago: 'Gadosey, Christopher K., Derya Turhan, Theresa Wenker, Lena S. Kegel, Julia Bobe, Laura Thomas, Ulrike Buhlmann, Stefan Fries, and Carola Grunschel. “Relationship between the Intraindividual Interplay of Negative and Positive Exam-Related Emotions and the Behavioral-Emotional Dimensions of Academic Procrastination.” Current Psychology 43, no. 40 (2024): 31476–94. https://doi.org/10.1007/s12144-024-06719-6.' ieee: 'C. K. Gadosey et al., “Relationship between the intraindividual interplay of negative and positive exam-related emotions and the behavioral-emotional dimensions of academic procrastination,” Current Psychology, vol. 43, no. 40, pp. 31476–31494, 2024, doi: 10.1007/s12144-024-06719-6.' mla: Gadosey, Christopher K., et al. “Relationship between the Intraindividual Interplay of Negative and Positive Exam-Related Emotions and the Behavioral-Emotional Dimensions of Academic Procrastination.” Current Psychology, vol. 43, no. 40, Springer Science and Business Media LLC, 2024, pp. 31476–94, doi:10.1007/s12144-024-06719-6. short: C.K. Gadosey, D. Turhan, T. Wenker, L.S. Kegel, J. Bobe, L. Thomas, U. Buhlmann, S. Fries, C. Grunschel, Current Psychology 43 (2024) 31476–31494. date_created: 2025-02-21T08:45:38Z date_updated: 2025-02-21T08:45:52Z doi: 10.1007/s12144-024-06719-6 intvolume: ' 43' issue: '40' language: - iso: eng page: 31476-31494 publication: Current Psychology publication_identifier: issn: - 1046-1310 - 1936-4733 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Relationship between the intraindividual interplay of negative and positive exam-related emotions and the behavioral-emotional dimensions of academic procrastination type: journal_article user_id: '81770' volume: 43 year: '2024' ... --- _id: '54538' author: - first_name: Maike full_name: Bauer, Maike id: '29647' last_name: Bauer citation: ama: 'Bauer M. Young Adult Diaspora Short Stories in the EFL Classroom: Approaching the Country of Reference Nigeria Through the Eyes of Adolescent Narrators. In: Matz F, Norrick-Rühl C, eds. Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond. Vol 35.2. Anglistik: International Journal of English Studies. Universitätsverlag Winter; 2024:97-113. doi:https://doi.org/10.33675/ANGL/2024/2/10' apa: 'Bauer, M. (2024). Young Adult Diaspora Short Stories in the EFL Classroom: Approaching the Country of Reference Nigeria Through the Eyes of Adolescent Narrators. In F. Matz & C. Norrick-Rühl (Eds.), Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond: Vol. 35.2 (pp. 97–113). Universitätsverlag Winter. https://doi.org/10.33675/ANGL/2024/2/10' bibtex: '@inbook{Bauer_2024, place={Heidelberg}, series={Anglistik: International Journal of English Studies}, title={Young Adult Diaspora Short Stories in the EFL Classroom: Approaching the Country of Reference Nigeria Through the Eyes of Adolescent Narrators}, volume={35.2}, DOI={https://doi.org/10.33675/ANGL/2024/2/10}, booktitle={Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond}, publisher={Universitätsverlag Winter}, author={Bauer, Maike}, editor={Matz, Frauke and Norrick-Rühl, Corinna}, year={2024}, pages={97–113}, collection={Anglistik: International Journal of English Studies} }' chicago: 'Bauer, Maike. “Young Adult Diaspora Short Stories in the EFL Classroom: Approaching the Country of Reference Nigeria Through the Eyes of Adolescent Narrators.” In Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond, edited by Frauke Matz and Corinna Norrick-Rühl, 35.2:97–113. Anglistik: International Journal of English Studies. Heidelberg: Universitätsverlag Winter, 2024. https://doi.org/10.33675/ANGL/2024/2/10.' ieee: 'M. Bauer, “Young Adult Diaspora Short Stories in the EFL Classroom: Approaching the Country of Reference Nigeria Through the Eyes of Adolescent Narrators,” in Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond, vol. 35.2, F. Matz and C. Norrick-Rühl, Eds. Heidelberg: Universitätsverlag Winter, 2024, pp. 97–113.' mla: 'Bauer, Maike. “Young Adult Diaspora Short Stories in the EFL Classroom: Approaching the Country of Reference Nigeria Through the Eyes of Adolescent Narrators.” Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond, edited by Frauke Matz and Corinna Norrick-Rühl, vol. 35.2, Universitätsverlag Winter, 2024, pp. 97–113, doi:https://doi.org/10.33675/ANGL/2024/2/10.' short: 'M. Bauer, in: F. Matz, C. Norrick-Rühl (Eds.), Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond, Universitätsverlag Winter, Heidelberg, 2024, pp. 97–113.' date_created: 2024-05-31T13:21:23Z date_updated: 2025-02-21T12:40:49Z doi: https://doi.org/10.33675/ANGL/2024/2/10 editor: - first_name: Frauke full_name: Matz, Frauke last_name: Matz - first_name: Corinna full_name: Norrick-Rühl, Corinna last_name: Norrick-Rühl language: - iso: eng main_file_link: - open_access: '1' url: https://angl.winter-verlag.de/data/article/12099/pdf/92402010.pdf oa: '1' page: 97-113 place: Heidelberg publication: Focus on Reading Young Adult (YA) Literature in the EFL Classroom and Beyond publication_status: published publisher: Universitätsverlag Winter series_title: 'Anglistik: International Journal of English Studies' status: public title: 'Young Adult Diaspora Short Stories in the EFL Classroom: Approaching the Country of Reference Nigeria Through the Eyes of Adolescent Narrators' type: book_chapter user_id: '29647' volume: '35.2' year: '2024' ... --- _id: '56420' abstract: - lang: eng text: There are a number of school choice problems in which students are heterogeneous according to the number of seats they occupy at the school they are assigned to. We propose a weighted school choice problem by assigning each student a so-called weight and formulate the weighted top trading cycles algorithm (WTTC) to find a matching. The WTTC is strategy-proof and results in a Pareto efficient matching. While the WTTC is a robust extension of the TTC when weights are introduced, it is no longer guaranteed that each student gets a seat at a school even if the overall capacity exceeds the sum of weights. Additionally, the WTTC introduces a trade-off between weights and priorities as a student with a higher weight has a disadvantage to be matched to a particular school compared to a student with the same schools’ priorities but a smaller weight. article_type: original author: - first_name: Nadja full_name: Stroh-Maraun, Nadja id: '13264' last_name: Stroh-Maraun citation: ama: Stroh-Maraun N. Weighted school choice problems and the weighted top trading cycles mechanism. Mathematical Social Sciences. 2024;132:49-56. doi:10.1016/j.mathsocsci.2024.09.001 apa: Stroh-Maraun, N. (2024). Weighted school choice problems and the weighted top trading cycles mechanism. Mathematical Social Sciences, 132, 49–56. https://doi.org/10.1016/j.mathsocsci.2024.09.001 bibtex: '@article{Stroh-Maraun_2024, title={Weighted school choice problems and the weighted top trading cycles mechanism}, volume={132}, DOI={10.1016/j.mathsocsci.2024.09.001}, journal={Mathematical Social Sciences}, publisher={Elsevier BV}, author={Stroh-Maraun, Nadja}, year={2024}, pages={49–56} }' chicago: 'Stroh-Maraun, Nadja. “Weighted School Choice Problems and the Weighted Top Trading Cycles Mechanism.” Mathematical Social Sciences 132 (2024): 49–56. https://doi.org/10.1016/j.mathsocsci.2024.09.001.' ieee: 'N. Stroh-Maraun, “Weighted school choice problems and the weighted top trading cycles mechanism,” Mathematical Social Sciences, vol. 132, pp. 49–56, 2024, doi: 10.1016/j.mathsocsci.2024.09.001.' mla: Stroh-Maraun, Nadja. “Weighted School Choice Problems and the Weighted Top Trading Cycles Mechanism.” Mathematical Social Sciences, vol. 132, Elsevier BV, 2024, pp. 49–56, doi:10.1016/j.mathsocsci.2024.09.001. short: N. Stroh-Maraun, Mathematical Social Sciences 132 (2024) 49–56. date_created: 2024-10-08T11:52:59Z date_updated: 2025-02-28T11:33:48Z ddc: - '330' department: - _id: '200' doi: 10.1016/j.mathsocsci.2024.09.001 file: - access_level: closed content_type: application/pdf creator: nmaraun date_created: 2024-10-08T11:53:39Z date_updated: 2024-10-08T11:53:39Z file_id: '56421' file_name: 1-s2.0-S0165489624000817-main.pdf file_size: 611017 relation: main_file success: 1 file_date_updated: 2024-10-08T11:53:39Z funded_apc: '1' has_accepted_license: '1' intvolume: ' 132' jel: - C78 - D47 keyword: - Matching - School choice - College admission problems - Top trading cycles - Pareto efficiency - Strategy-proofness language: - iso: eng main_file_link: - open_access: '1' url: https://www.sciencedirect.com/science/article/pii/S0165489624000817?via%3Dihub oa: '1' page: 49-56 project: - _id: '7' grant_number: '160364472' name: 'SFB 901 - A3: SFB 901 - Der Markt für Services: Anreize, Algorithmen, Implementation (Teilprojekt A3)' - _id: '1' grant_number: '160364472' name: 'SFB 901: SFB 901: On-The-Fly Computing - Individualisierte IT-Dienstleistungen in dynamischen Märkten ' - _id: '2' name: 'SFB 901 - A: SFB 901 - Projektbereich A: Algorithmische und ökonomische Grundlagen für die Organisation großer, dynamischer Märkte' publication: Mathematical Social Sciences publication_identifier: issn: - 0165-4896 publication_status: published publisher: Elsevier BV status: public title: Weighted school choice problems and the weighted top trading cycles mechanism type: journal_article user_id: '477' volume: 132 year: '2024' ... --- _id: '59131' abstract: - lang: eng text: 'Füllstoffe erhöhen die Wärmeleitfähigkeit von im Fused Filament Fabrication (FFF) Verfahren hergestellten Strukturen. Neben der Füllstoffart ist dabei der Füllstoffvolumenanteil relevant. Der maximal verarbeitbare Füllstoffanteil ist hier gegenüber vergleichbaren Spritzgussmaterialien reduziert. An der Kunststofftechnik Paderborn (KTP) wurde untersucht, welchen Einfluss spezifische Füllstoffe auf die Materialeigenschaften haben. Die additive Fertigung (AM) gewinnt durch stetig steigende Anforderungen an die Bauteilkomplexität und Fertigungsflexibilität nicht nur im Prototypenbau an Bedeutung [1]. Eines der am weitesten verbreiteten additiven Fertigungsverfahren ist dabei das Fused Filament Fabrication (FFF) Verfahren [2]. Bei diesem Verfahren wird ein Kunststofffilament in eine temperierte Düse gefördert, dort aufgeschmolzen und in einer charakteristischen, näherungsweise elliptischen Stranggeometrie ausgetragen. Durch die Verfahrbewegung der Plastifiziereinheit und der Bauplattform können dreidimensionale Strukturen gefertigt werden [3]. Das FFF-Verfahren zeichnet sich unter anderem durch die Verarbeitung einer großen Bandbreite an thermoplastischen Kunststoffen aus [4]. Dies ermöglicht eine anwendungsspezifische Materialauswahl. In diesem Zusammenhang stellt auch die Modifizierung mit Füllstoffen eine Möglichkeit dar, die Materialeigenschaften gezielt einzustellen. Die Füllstoffe können dabei nach dem jeweiligen Aspektverhältnis in Kugeln, Plättchen oder Fasern unterteilt werden [5]. Die Steigerung der Wärmeleitfähigkeit von im FFF-Verfahren hergestellten Strukturen ist aktuell Stand der Forschung, gewinnt jedoch vor dem Hintergrund der aktuellen Herausforderungen, z. B. in der Elektrotechnik, an Bedeutung [6]. Die Kunststofftechnik Paderborn (KTP) befasst sich am Direct Manufacturing Research Center (DMRC) – Academic derzeit mit der Entwicklung und Verarbeitung wärmeleitfähiger Kunststoffe für das FFF-Verfahren. Der Fokus liegt dabei auf den material- und prozessseitigen Einflüssen auf die Materialeigenschaften. Für die Erzielung hoher Wärmeleitfähigkeiten sind dabei die Wahl der Füllstoffart und des Füllstoffvolumenanteils hervorzuheben. Kenntnisse über die Auswirkungen der Füllstoffzugabe und dem Zusammenspiel zwischen den mechanischen Eigenschaften und der Wärmeleitfähigkeit sind für die anwendungsgerechte Bauteilauslegung essenziell. Das Vorgehen Zur Analyse der Wärmeleitfähigkeit wurde eine am DMRC – Academic entwickelte Methode verwendet. Diese basiert auf der Fertigung von zylindrischen Probekörpern, welche im FFF-Verfahren entlang der Längsachse parallel zu den drei Koordinatenrichtungen X, Y und Z orientiert gefertigt werden. Im Anschluss werden die Probekörper spanend auf das für die Messung erforderliche Maß nachbearbeitet. Dadurch können fertigungsbedingte Einflüsse auf die Geometrie und Oberflächengüte reduziert und damit die Messgenauigkeit erhöht werden (Bild 2). Durch die Fertigung von drei unterschiedlichen Orientierungen kann weiterhin eine resultierende Anisotropie bewertet werden. Die auf einem Doppelschneckenextruder (Thermo Fisher Process11) hergestellten Filamente wurden nachfolgend mit einem Gewo HTP260 (Gewo Feinmechanik) verarbeitet. Die entsprechenden FFF-Prozessparameter sind in Tabelle 1 dargestellt. Dabei ist anzumerken, dass eine Bauraumtemperierung im Allgemeinen und der auf 120 °C beheizte Bauraum für die Verarbeitung der betrachteten Materialien im Speziellen zur prozesssicheren FFF-Fertigung unerlässlich sind. Die Analyse der Wärmeleitfähigkeit erfolgte schließlich mittels der Laser-Flash-Analyse (LFA) (Netzsch LFA 467 HyperFlash) entsprechend der DIN EN ISO 22007-4 [7]. Für die Bewertung der mechanischen Eigenschaften wurden Probekörper entsprechend der DIN EN ISO 527-2 Typ 1BA unter Verwendung einer Kolben-Spritzgussmaschine (Thermo Fisher Mini Jet Pro) gefertigt und mit einer Zugprüfmaschine (Zwick/Roell ProLine Z 010) geprüft, um den grundlegenden Füllstoffeinfluss bewerten zu können [8]. Für die Untersuchungen wurde ein Kunststoff-Compound basierend auf Polybutylenterephthalat (PBT) ohne (PBTx) und mit (PBTxa) Verarbeitungshilfe verwendet. Als Füllstoffe kamen zwei wärmeleitfähige plättchenförmige Füllstoffe (Bezeichnung: F1 und F2) zur Anwendung, welche einen mittleren Partikeldurchmesser (d50) für F1 von 5,0 µm und für F2 von 7,9 µm aufweisen. Ergebnisse der Zugversuche Die Auswertung der mechanischen Eigenschaften zeigt den Einfluss des Füllstoffvolumenanteils anhand des Elastizitätsmoduls und der Bruchdehnung auf (Bild 3). Die resultierende Festigkeit wird durch die geringe Verstärkungswirkung der Plättchen hingegen nur geringfügig beeinflusst und ist folglich nicht gesondert aufgeführt. Im Gegensatz dazu erhöht sich die Steifigkeit mit steigendem Füllstoffvolumenanteil, was auf den erhöhten E-Modul der Füllstoffe gegenüber der Kunststoffmatrix zurückzuführen ist. So kann durch die Füllstoffzugabe mit einem Volumenanteil in Höhe von 22 {%} der E-Modul für das Material PBTxa-F1 gegenüber der reinen Kunststoffmatrix um den Faktor 2,7 gesteigert werden. Hingegen nimmt die Bruchdehnung mit steigendem Füllstoffvolumenanteil ab. Diese mit dem Volumenanteil positiv korrelierende Versprödung stellt einen begrenzenden Faktor bei der Herstellung hochgefüllter Filamente dar. So neigen höher gefüllte Filamente eher zu einem Bruch bei der Herstellung und Verarbeitung. Dies resultiert in den vorliegenden maximalen Füllstoffvolumenanteilen, welche im Vergleich zu Spritzgussmaterialien deutlich reduziert sind. Eine weitere Erhöhung führt zu einer unzureichenden Prozessstabilität und damit zu einer unzureichenden Verarbeitungseignung für das FFF-Verfahren. Weiterhin zeigt sich, dass der Einfluss der verwendeten plättchenförmigen Füllstoffe für eine identische Kunststoffmatrix vergleichbar ist. Durch die Verwendung von Verarbeitungshilfen können die mechanischen Eigenschaften allerdings beeinflusst werden. Die Erhöhung des E-Moduls und der Bruchdehnung ist dabei auf die verbesserte Benetzung der Füllstoffpartikel und damit eine verbesserte Kunststoff-Füllstoff-Interaktion zurückzuführen. Bewertung der Wärmeleitfähigkeit Zur Darstellung der Ergebnisse der Wärmeleitfähigkeit wurden die Messergebnisse von je vier Probekörpern über die Prüftemperaturen zwischen 30 °C und 180 °C in 30 °C Inkrementen gemittelt (Bild 4). Die Ergebnisse zeigen eine positive Korrelation zwischen einem zunehmenden Füllstoffvolumenanteil und der Wärmeleitfähigkeit. Diese Steigerung ist wiederum abhängig von der jeweilig verwendeten Füllstoffart. Hierbei liefert das Material PBTx-F2-X eine vergleichbare Wärmeleitfähigkeit wie die Materialien PBTx-F1 und PBTxa-F1 in der jeweiligen Y-Orientierung. Die Unterschiede zwischen den beiden Materialien PBTx-F1 und PBTxa-F1 sind hingegen minimal und der Einfluss der Verarbeitungshilfe auf die Wärmeleitfähigkeit dementsprechend als vernachlässigbar anzusehen. Weiterhin ist eine anisotrope Wärmeleitfähigkeit für die mit Plättchen gefüllten Kunststoffe ersichtlich. Während die X-Orientierung (entlang der abgelegten Stränge) eine erhöhte Wärmeleitfähigkeit für alle Materialien liefert, ist diese für die Z-Orientierung (zwischen den Schichten) am geringsten. Gründe hierfür sind der Strangverbund sowie die Füllstofforientierung innerhalb der abgelegten Stränge. Dabei ist die aufgezeigte Anisotropie für den Füllstoff F2 im Vergleich zu F1 leicht reduziert und bestätigt den spezifischen Einfluss der Füllstoffart. Auf Basis der Ergebnisse können allgemein drei charakteristische Orientierungen zur Bewertung der Wärmeleitfähigkeit erfasst werden. Für die Bauteilauslegung ist der aufgezeigte Einfluss plättchenförmiger Füllstoffe auf die sich einstellende Anisotropie von im FFF-Verfahren gefertigten Strukturen zwingend zu beachten. Ausblick Die angeführten Untersuchungen zeigen, dass die Verwendung von plättchenförmigen Füllstoffen in Abhängigkeit von dem Füllstoffvolumenanteil zu einer Beeinflussung der Materialeigenschaften führt. Die dargelegten Ergebnisse stellen in diesem Kontext eine Grundlage zur Bewertung des Zusammenhangs zwischen den mechanischen Eigenschaften und der Wärmeleitfähigkeit dar. Insbesondere die Limitierung des Füllstoffvolumenanteils durch die erhöhte Versprödung ist hierbei anzuführen. Aktuelle Untersuchungen an der Kunststofftechnik Paderborn befassen sich mit der Betrachtung weiterer material- und prozessseitiger Einflussgrößen auf die Wärmeleitfähigkeit. Die generierten Daten sollen schließlich für die Entwicklung eines Modells zur Vorhersage der Wärmeleitfähigkeit von im FFF-Verfahren gefertigten Strukturen zusammengeführt werden.' author: - first_name: Elmar full_name: Moritzer, Elmar id: '20531' last_name: Moritzer - first_name: Christian Lennart full_name: Elsner, Christian Lennart id: '70729' last_name: Elsner - first_name: Maximilian Karl Franz full_name: Salm, Maximilian Karl Franz id: '57929' last_name: Salm citation: ama: Moritzer E, Elsner CL, Salm MKF. Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst. Plastverarbeiter. 2024;2024. apa: Moritzer, E., Elsner, C. L., & Salm, M. K. F. (2024). Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst. Plastverarbeiter, 2024. bibtex: '@article{Moritzer_Elsner_Salm_2024, title={Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst}, volume={2024}, journal={Plastverarbeiter}, author={Moritzer, Elmar and Elsner, Christian Lennart and Salm, Maximilian Karl Franz}, year={2024} }' chicago: Moritzer, Elmar, Christian Lennart Elsner, and Maximilian Karl Franz Salm. “Wie Der Füllstoffvolumenanteil Die Materialeigenschaften Beeinflusst.” Plastverarbeiter 2024 (2024). ieee: E. Moritzer, C. L. Elsner, and M. K. F. Salm, “Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst,” Plastverarbeiter, vol. 2024, 2024. mla: Moritzer, Elmar, et al. “Wie Der Füllstoffvolumenanteil Die Materialeigenschaften Beeinflusst.” Plastverarbeiter, vol. 2024, 2024. short: E. Moritzer, C.L. Elsner, M.K.F. Salm, Plastverarbeiter 2024 (2024). date_created: 2025-03-25T10:18:06Z date_updated: 2025-03-27T10:56:02Z department: - _id: '9' - _id: '321' - _id: '624' - _id: '367' intvolume: ' 2024' keyword: - Compoundieren - Fused Filament Fabrication language: - iso: eng publication: Plastverarbeiter status: public title: Wie der Füllstoffvolumenanteil die Materialeigenschaften beeinflusst type: journal_article user_id: '59363' volume: 2024 year: '2024' ... --- _id: '59274' abstract: - lang: eng text: 'Recently, ion exchange (IE) has been used to periodically modify the coercive field (Ec) of the crystal prior to periodic poling, to fabricate fine-pitch domain structures in Rb-doped KTiOPO4 (RKTP). Here, we use micro-Raman spectroscopy to understand the impact of IE on the vibrational modes related to the Rb/K lattice sites, TiO octahedra, and PO4 tetrahedra, which all form the basis of the RKTP crystal structure. We analyze the Raman spectra of three different RKTP samples: (1) a RKTP sample that shows a poled domain grating only, (2) a RKTP sample that has an Ec grating only, and (3) a RKTP sample that has both an Ec and a domain grating of the nominally same spacing. This allows us to determine the impact of IE on the vibrational modes of RKTP. We characterize the changes in the lower Raman peaks related to the alkali-metal ions, as well as observe lattice modifications induced by the incorporation of Rb+ that extend further into the crystal bulk than the expected IE depth. Moreover, the influence of IE on the domain walls is also manifested in their Raman peak shift. We discuss our results in terms of the deformation of the PO4and TiO groups. Our results highlight the intricate impact of IE on the crystal structure and how it facilitates periodic poling, paving the way for further development of the Ec-engineering technique.' article_number: '214115' article_type: original author: - first_name: Cherrie S. J. full_name: Lee, Cherrie S. J. last_name: Lee - first_name: Carlota full_name: Canalias, Carlota last_name: Canalias - first_name: Robin full_name: Buschbeck, Robin last_name: Buschbeck - first_name: Boris full_name: Koppitz, Boris last_name: Koppitz - first_name: Franz full_name: Hempel, Franz last_name: Hempel - first_name: Zeeshan full_name: Amber, Zeeshan last_name: Amber - first_name: Lukas M. full_name: Eng, Lukas M. last_name: Eng - first_name: Michael full_name: Rüsing, Michael id: '22501' last_name: Rüsing orcid: 0000-0003-4682-4577 citation: ama: 'Lee CSJ, Canalias C, Buschbeck R, et al. Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching. Physical Review B. 2024;110(21). doi:10.1103/physrevb.110.214115' apa: 'Lee, C. S. J., Canalias, C., Buschbeck, R., Koppitz, B., Hempel, F., Amber, Z., Eng, L. M., & Rüsing, M. (2024). Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching. Physical Review B, 110(21), Article 214115. https://doi.org/10.1103/physrevb.110.214115' bibtex: '@article{Lee_Canalias_Buschbeck_Koppitz_Hempel_Amber_Eng_Rüsing_2024, title={Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching}, volume={110}, DOI={10.1103/physrevb.110.214115}, number={21214115}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Lee, Cherrie S. J. and Canalias, Carlota and Buschbeck, Robin and Koppitz, Boris and Hempel, Franz and Amber, Zeeshan and Eng, Lukas M. and Rüsing, Michael}, year={2024} }' chicago: 'Lee, Cherrie S. J., Carlota Canalias, Robin Buschbeck, Boris Koppitz, Franz Hempel, Zeeshan Amber, Lukas M. Eng, and Michael Rüsing. “Impact of Ion Exchange on Vibrational Modes in Rb-Doped KTiOPO4: A Raman Spectroscopy Study on the Interplay between Ion Exchange and Polarization Switching.” Physical Review B 110, no. 21 (2024). https://doi.org/10.1103/physrevb.110.214115.' ieee: 'C. S. J. Lee et al., “Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching,” Physical Review B, vol. 110, no. 21, Art. no. 214115, 2024, doi: 10.1103/physrevb.110.214115.' mla: 'Lee, Cherrie S. J., et al. “Impact of Ion Exchange on Vibrational Modes in Rb-Doped KTiOPO4: A Raman Spectroscopy Study on the Interplay between Ion Exchange and Polarization Switching.” Physical Review B, vol. 110, no. 21, 214115, American Physical Society (APS), 2024, doi:10.1103/physrevb.110.214115.' short: C.S.J. Lee, C. Canalias, R. Buschbeck, B. Koppitz, F. Hempel, Z. Amber, L.M. Eng, M. Rüsing, Physical Review B 110 (2024). date_created: 2025-04-02T16:14:44Z date_updated: 2025-04-02T16:18:34Z department: - _id: '288' - _id: '15' - _id: '623' doi: 10.1103/physrevb.110.214115 intvolume: ' 110' issue: '21' language: - iso: eng publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published publisher: American Physical Society (APS) status: public title: 'Impact of ion exchange on vibrational modes in Rb-doped KTiOPO4: A Raman spectroscopy study on the interplay between ion exchange and polarization switching' type: journal_article user_id: '22501' volume: 110 year: '2024' ... --- _id: '56177' author: - first_name: Lisa full_name: Knoll, Lisa id: '88789' last_name: Knoll citation: ama: 'Knoll L. Valuation and Sustainability. In: Krüger A, Peetz T, Schaefer H, eds. The Routledge International Handbook of Valuation and Society. Routledge; 2024:316-325.' apa: Knoll, L. (2024). Valuation and Sustainability. In A. Krüger, T. Peetz, & H. Schaefer (Eds.), The Routledge International Handbook of Valuation and Society (pp. 316–325). Routledge. bibtex: '@inbook{Knoll_2024, place={London}, title={Valuation and Sustainability}, booktitle={The Routledge International Handbook of Valuation and Society}, publisher={Routledge}, author={Knoll, Lisa}, editor={Krüger, Anne and Peetz, Thorsten and Schaefer, Hilmar}, year={2024}, pages={316–325} }' chicago: 'Knoll, Lisa. “Valuation and Sustainability.” In The Routledge International Handbook of Valuation and Society, edited by Anne Krüger, Thorsten Peetz, and Hilmar Schaefer, 316–25. London: Routledge, 2024.' ieee: 'L. Knoll, “Valuation and Sustainability,” in The Routledge International Handbook of Valuation and Society, A. Krüger, T. Peetz, and H. Schaefer, Eds. London: Routledge, 2024, pp. 316–325.' mla: Knoll, Lisa. “Valuation and Sustainability.” The Routledge International Handbook of Valuation and Society, edited by Anne Krüger et al., Routledge, 2024, pp. 316–25. short: 'L. Knoll, in: A. Krüger, T. Peetz, H. Schaefer (Eds.), The Routledge International Handbook of Valuation and Society, Routledge, London, 2024, pp. 316–325.' date_created: 2024-09-18T09:50:38Z date_updated: 2025-06-30T08:26:49Z department: - _id: '36' - _id: '121' editor: - first_name: Anne full_name: Krüger, Anne last_name: Krüger - first_name: Thorsten full_name: Peetz, Thorsten last_name: Peetz - first_name: Hilmar full_name: Schaefer, Hilmar last_name: Schaefer language: - iso: eng page: 316-325 place: London publication: The Routledge International Handbook of Valuation and Society publication_identifier: unknown: - ISBN 9781032115627 publication_status: published publisher: Routledge status: public title: Valuation and Sustainability type: book_chapter user_id: '88789' year: '2024' ... --- _id: '55868' citation: ama: Adolphi R, Hahn S, Kettner M, eds. Philosophische Digitalisierungsforschung  Verantwortung, Verständigung, Vernunft, Macht. transcript; 2024. apa: Adolphi, R., Hahn, S., & Kettner, M. (Eds.). (2024). Philosophische Digitalisierungsforschung  Verantwortung, Verständigung, Vernunft, Macht. transcript. bibtex: '@book{Adolphi_Hahn_Kettner_2024, place={Bielefeld}, title={Philosophische Digitalisierungsforschung  Verantwortung, Verständigung, Vernunft, Macht}, publisher={transcript}, year={2024} }' chicago: 'Adolphi, Rainer, Susanne Hahn, and Matthias Kettner, eds. Philosophische Digitalisierungsforschung  Verantwortung, Verständigung, Vernunft, Macht. Bielefeld: transcript, 2024.' ieee: 'R. Adolphi, S. Hahn, and M. Kettner, Eds., Philosophische Digitalisierungsforschung  Verantwortung, Verständigung, Vernunft, Macht. Bielefeld: transcript, 2024.' mla: Adolphi, Rainer, et al., editors. Philosophische Digitalisierungsforschung  Verantwortung, Verständigung, Vernunft, Macht. transcript, 2024. short: R. Adolphi, S. Hahn, M. Kettner, eds., Philosophische Digitalisierungsforschung  Verantwortung, Verständigung, Vernunft, Macht, transcript, Bielefeld, 2024. date_created: 2024-08-28T18:47:16Z date_updated: 2025-07-02T07:39:27Z department: - _id: '756' - _id: '26' editor: - first_name: Rainer full_name: Adolphi, Rainer last_name: Adolphi - first_name: Susanne full_name: Hahn, Susanne last_name: Hahn - first_name: Matthias full_name: Kettner, Matthias last_name: Kettner language: - iso: ger main_file_link: - open_access: '1' url: https://www.transcript-verlag.de/978-3-8376-7497-2/philosophische-digitalisierungsforschung/?number=978-3-8394-7497-6 oa: '1' page: '464' place: Bielefeld publication_identifier: isbn: - 978-3-8376-7497-2 publication_status: published publisher: transcript status: public title: Philosophische Digitalisierungsforschung Verantwortung, Verständigung, Vernunft, Macht type: book_editor user_id: '93637' year: '2024' ... --- _id: '58692' citation: ama: Alpsancar S, ed. Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 . Vol 10. Jahrgang. Nomos; 2024. apa: 'Alpsancar, S. (Ed.). (2024). Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 : Vol. 10. Jahrgang. Nomos.' bibtex: '@book{Alpsancar_2024, place={Baden Baden}, series={Jahrbuch Technikphilosophie}, title={ Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 }, volume={10. Jahrgang}, publisher={Nomos}, year={2024}, collection={Jahrbuch Technikphilosophie} }' chicago: 'Alpsancar, Suzana, ed. Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 . Vol. 10. Jahrgang. Jahrbuch Technikphilosophie. Baden Baden: Nomos, 2024.' ieee: 'S. Alpsancar, Ed., Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 , vol. 10. Jahrgang. Baden Baden: Nomos, 2024.' mla: Alpsancar, Suzana, editor. Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 . Nomos, 2024. short: S. Alpsancar, ed., Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 , Nomos, Baden Baden, 2024. date_created: 2025-02-18T12:22:11Z date_updated: 2025-07-07T12:25:56Z department: - _id: '26' - _id: '14' editor: - first_name: Suzana full_name: Alpsancar, Suzana id: '93637' last_name: Alpsancar language: - iso: ger place: Baden Baden publication_identifier: isbn: - ISBN 978-3-7560-1830-7 publication_status: published publisher: Nomos series_title: Jahrbuch Technikphilosophie status: public title: ' Der Sog des Neuen und der Schock des Alten Jahrbuch Technikphilosophie 2024 ' type: book_editor user_id: '93637' volume: 10. Jahrgang year: '2024' ... --- _id: '60645' abstract: - lang: ger text: Die Wandlungsfähigkeit einer Prozesskette erfordert Fügeverbindungen mit gezielt einstellbaren mechanischen, elektrischen, thermischen oder chemischen Eigenschaften. Dieser Beitrag beschreibt die Untersuchungen, inwiefern beim Clinchen zweier Bleche aus der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014 bereits auf Basis der Prozessüberwachung des Kraft-Weg-Verlaufs bzw. des sich daraus ergebenden Energieeintrags auf die mechanischen und elektrischen Eigenschaften der Fügeverbindung geschlossen werden kann. An einer ausgewählten Fügeaufgabe werden im Stufenversuch die gegenseitigen Abhängigkeiten der einzelnen Einflussgrößen sowie des Wärmebehandlungszustands aufgezeigt. Dabei wird zwischen den Bindemechanismen Formschluss und Kraftschluss unterschieden. Die Formschlusskomponente wird anhand der geometrischen Kenngrößen wie Bodendicke, Halsdicke und Hinterschnitt in Mikroskopieuntersuchungen an Schliffbildern und den mechanischen Eigenschaften der Fügeverbindung untersucht, die im Scherzug- und Kopfzugversuch bestimmt werden. Dazu erfolgt zudem die Charakterisierung der Versagensbilder. Zur Quantifizierung der Kraftschlusskomponente der Fügeverbindung werden das Losbrechmoment im Torsionsversuch und der elektrische Widerstand mittels Vier-Leiter-Methode ermittelt und korreliert. author: - first_name: Stephan full_name: Lüder, Stephan id: '104468' last_name: Lüder orcid: https://orcid.org/0000-0002-9086-3031 - first_name: Jan full_name: Kalich, Jan last_name: Kalich - first_name: Hannes full_name: Oesterle, Hannes last_name: Oesterle - first_name: Hans Christian full_name: Schmale, Hans Christian last_name: Schmale citation: ama: 'Lüder S, Kalich J, Oesterle H, Schmale HC. Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014. In: Krupp U, Steller I, Stahlinstitut VDEh, eds. Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung. ; 2024:205-210.' apa: 'Lüder, S., Kalich, J., Oesterle, H., & Schmale, H. C. (2024). Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014. In U. Krupp, I. Steller, & Stahlinstitut VDEh (Eds.), Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung (pp. 205–210).' bibtex: '@inproceedings{Lüder_Kalich_Oesterle_Schmale_2024, place={Düsseldorf}, title={Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014}, booktitle={Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung}, author={Lüder, Stephan and Kalich, Jan and Oesterle, Hannes and Schmale, Hans Christian}, editor={Krupp, Ulrich and Steller, Ingo and Stahlinstitut VDEh}, year={2024}, pages={205–210} }' chicago: 'Lüder, Stephan, Jan Kalich, Hannes Oesterle, and Hans Christian Schmale. “Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014.” In Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung, edited by Ulrich Krupp, Ingo Steller, and Stahlinstitut VDEh, 205–10. Düsseldorf, 2024.' ieee: 'S. Lüder, J. Kalich, H. Oesterle, and H. C. Schmale, “Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014,” in Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung, Krefeld, 2024, pp. 205–210.' mla: 'Lüder, Stephan, et al. “Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014.” Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung, edited by Ulrich Krupp et al., 2024, pp. 205–10.' short: 'S. Lüder, J. Kalich, H. Oesterle, H.C. Schmale, in: U. Krupp, I. Steller, Stahlinstitut VDEh (Eds.), Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung, Düsseldorf, 2024, pp. 205–210.' conference: end_date: 2024-12-06 location: Krefeld name: Tagung Werkstoffprüfung 2024 start_date: 2024-12-05 corporate_editor: - Stahlinstitut VDEh date_created: 2025-07-18T09:01:25Z date_updated: 2025-07-18T11:32:18Z department: - _id: '630' editor: - first_name: Ulrich full_name: Krupp, Ulrich last_name: Krupp - first_name: Ingo full_name: Steller, Ingo last_name: Steller extern: '1' keyword: - Clinchen - Aluminium - Stufensetzversuch - Bindemechanismus - Formschluss - Kraftschluss - Zugversuch - Torsionsversuch - Widerstandsmessung language: - iso: ger page: 205-210 place: Düsseldorf project: - _id: '131' name: 'TRR 285 - A: TRR 285 - Project Area A' - _id: '138' name: 'TRR 285 – A04: TRR 285 - Subproject A04' publication: 'Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung' publication_identifier: isbn: - 978-3-941269-97-2 publication_status: published quality_controlled: '1' status: public title: Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014 type: conference user_id: '104468' year: '2024' ... --- _id: '56075' abstract: - lang: eng text: An isostructural series of FeII, FeIII, and Fe(IV)complexes [Fe(ImP)2]0/+/2+ utilizing the ImP 1,1′-(1,3-phenylene)-bis(3-methyl-1-imidazol-2-ylidene) ligand, combining N-heterocy-clic carbenes and cyclometalating functions, is presented. The strong donor motif stabilizes the high-valent Fe(IV) oxidation state yet keeps the FeII oxidation state accessible from the parent Fe(III)compound. Chemical oxidation of [Fe(ImP)2]+ yields stable [FeIV(ImP)2]2+. In contrast, [FeII(ImP)2]0, obtained by reduction,is highly sensitive toward oxygen. Exhaustive ground state characterization by single-crystal X-ray diffraction, 1H NMR,Mössbauer spectroscopy, temperature-dependent magnetic measurements, a combination of X-ray absorption near edge structureand valence-to-core, as well as core-to-core X-ray emission spectroscopy, complemented by detailed density functional theory (DFT) analysis, reveals that the three complexes[Fe(ImP)2]0/+/2+ can be unequivocally attributed to low-spin d6, d5, and d4 complexes. The excited state landscape of the Fe(II) and Fe(IV) complexes is characterized by short-lived 3MLCT and 3LMCT states, with lifetimes of 5.1 and 1.4 ps, respectively. In the FeII-compound, an energetically low-lying MC state leads to fast deactivation of the MLCT state. The distorted square-pyramidal state, where one carbene is dissociated, can not only relax into the ground state, but also into a singlet dissociated state. Its formation was investigated with time-dependent optical spectroscopy, while insights into its structure were gained by NMR spectroscopy. author: - first_name: Jakob full_name: Steube, Jakob id: '40342' last_name: Steube orcid: 0000-0003-3178-4429 - first_name: Lorena full_name: Fritsch, Lorena id: '44418' last_name: Fritsch - first_name: Ayla full_name: Kruse, Ayla last_name: Kruse - first_name: Olga S. full_name: Bokareva, Olga S. last_name: Bokareva - first_name: Serhiy full_name: Demeshko, Serhiy last_name: Demeshko - first_name: Hossam full_name: Elgabarty, Hossam id: '60250' last_name: Elgabarty orcid: 0000-0002-4945-1481 - first_name: Roland full_name: Schoch, Roland id: '48467' last_name: Schoch orcid: 0000-0003-2061-7289 - first_name: Mohammad full_name: Alaraby, Mohammad last_name: Alaraby - first_name: Hans full_name: Egold, Hans id: '101' last_name: Egold - first_name: Bastian Johannes full_name: Bracht, Bastian Johannes id: '86707' last_name: Bracht - first_name: Lennart full_name: Schmitz, Lennart id: '53140' last_name: Schmitz - first_name: Stephan full_name: Hohloch, Stephan last_name: Hohloch - first_name: Thomas D. full_name: Kühne, Thomas D. last_name: Kühne - first_name: Franc full_name: Meyer, Franc last_name: Meyer - first_name: Oliver full_name: Kühn, Oliver last_name: Kühn - first_name: Stefan full_name: Lochbrunner, Stefan last_name: Lochbrunner - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 citation: ama: Steube J, Fritsch L, Kruse A, et al. Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States. Inorganic Chemistry. Published online 2024. doi:10.1021/acs.inorgchem.4c02576 apa: Steube, J., Fritsch, L., Kruse, A., Bokareva, O. S., Demeshko, S., Elgabarty, H., Schoch, R., Alaraby, M., Egold, H., Bracht, B. J., Schmitz, L., Hohloch, S., Kühne, T. D., Meyer, F., Kühn, O., Lochbrunner, S., & Bauer, M. (2024). Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States. Inorganic Chemistry. https://doi.org/10.1021/acs.inorgchem.4c02576 bibtex: '@article{Steube_Fritsch_Kruse_Bokareva_Demeshko_Elgabarty_Schoch_Alaraby_Egold_Bracht_et al._2024, title={Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States}, DOI={10.1021/acs.inorgchem.4c02576}, journal={Inorganic Chemistry}, publisher={American Chemical Society (ACS)}, author={Steube, Jakob and Fritsch, Lorena and Kruse, Ayla and Bokareva, Olga S. and Demeshko, Serhiy and Elgabarty, Hossam and Schoch, Roland and Alaraby, Mohammad and Egold, Hans and Bracht, Bastian Johannes and et al.}, year={2024} }' chicago: Steube, Jakob, Lorena Fritsch, Ayla Kruse, Olga S. Bokareva, Serhiy Demeshko, Hossam Elgabarty, Roland Schoch, et al. “Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States.” Inorganic Chemistry, 2024. https://doi.org/10.1021/acs.inorgchem.4c02576. ieee: 'J. Steube et al., “Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States,” Inorganic Chemistry, 2024, doi: 10.1021/acs.inorgchem.4c02576.' mla: Steube, Jakob, et al. “Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States.” Inorganic Chemistry, American Chemical Society (ACS), 2024, doi:10.1021/acs.inorgchem.4c02576. short: J. Steube, L. Fritsch, A. Kruse, O.S. Bokareva, S. Demeshko, H. Elgabarty, R. Schoch, M. Alaraby, H. Egold, B.J. Bracht, L. Schmitz, S. Hohloch, T.D. Kühne, F. Meyer, O. Kühn, S. Lochbrunner, M. Bauer, Inorganic Chemistry (2024). date_created: 2024-09-05T11:34:20Z date_updated: 2025-08-15T12:17:35Z department: - _id: '306' doi: 10.1021/acs.inorgchem.4c02576 keyword: - Photo language: - iso: eng publication: Inorganic Chemistry publication_identifier: issn: - 0020-1669 - 1520-510X publication_status: published publisher: American Chemical Society (ACS) status: public title: Isostructural Series of a Cyclometalated Iron Complex in Three Oxidation States type: journal_article user_id: '48467' year: '2024' ... --- _id: '56074' abstract: - lang: eng text: Effective photoinduced charge transfer makes molecular bimetallic assemblies attractive for applications as active light‐induced proton reduction systems. Developing competitive base metal dyads is mandatory for a more sustainable future. However, the electron transfer mechanisms from the photosensitizer to the proton reduction catalyst in base metal dyads remain so far unexplored. A Fe─Co dyad that exhibits photocatalytic H2 production activity is studied using femtosecond X‐ray emission spectroscopy, complemented by ultrafast optical spectroscopy and theoretical time‐dependent DFT calculations, to understand the electronic and structural dynamics after photoexcitation and during the subsequent charge transfer process from the Fe(II) photosensitizer to the cobaloxime catalyst. This novel approach enables the simultaneous measurement of the transient X‐ray emission at the iron and cobalt K‐edges in a two‐color experiment. With this methodology, the excited state dynamics are correlated to the electron transfer processes, and evidence of the Fe→Co electron transfer as an initial step of proton reduction activity is unraveled. author: - first_name: Michał full_name: Nowakowski, Michał id: '78878' last_name: Nowakowski orcid: 0000-0002-3734-7011 - first_name: Marina full_name: Huber‐Gedert, Marina last_name: Huber‐Gedert - first_name: Hossam full_name: Elgabarty, Hossam id: '60250' last_name: Elgabarty orcid: 0000-0002-4945-1481 - first_name: Aleksandr full_name: Kalinko, Aleksandr last_name: Kalinko - first_name: Jacek full_name: Kubicki, Jacek last_name: Kubicki - first_name: Ahmet full_name: Kertmen, Ahmet last_name: Kertmen - first_name: Natalia full_name: Lindner, Natalia last_name: Lindner - first_name: Dmitry full_name: Khakhulin, Dmitry last_name: Khakhulin - first_name: Frederico A. full_name: Lima, Frederico A. last_name: Lima - first_name: Tae‐Kyu full_name: Choi, Tae‐Kyu last_name: Choi - first_name: Mykola full_name: Biednov, Mykola last_name: Biednov - first_name: Lennart full_name: Schmitz, Lennart id: '53140' last_name: Schmitz - first_name: Natalia full_name: Piergies, Natalia last_name: Piergies - first_name: Peter full_name: Zalden, Peter last_name: Zalden - first_name: Katerina full_name: Kubicek, Katerina last_name: Kubicek - first_name: Angel full_name: Rodriguez‐Fernandez, Angel last_name: Rodriguez‐Fernandez - first_name: Mohammad Alaraby full_name: Salem, Mohammad Alaraby last_name: Salem - first_name: Sophie E. full_name: Canton, Sophie E. last_name: Canton - first_name: Christian full_name: Bressler, Christian last_name: Bressler - first_name: Thomas D. full_name: Kühne, Thomas D. last_name: Kühne - first_name: Wojciech full_name: Gawelda, Wojciech last_name: Gawelda - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 citation: ama: Nowakowski M, Huber‐Gedert M, Elgabarty H, et al. Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad. Advanced Science. Published online 2024. doi:10.1002/advs.202404348 apa: Nowakowski, M., Huber‐Gedert, M., Elgabarty, H., Kalinko, A., Kubicki, J., Kertmen, A., Lindner, N., Khakhulin, D., Lima, F. A., Choi, T., Biednov, M., Schmitz, L., Piergies, N., Zalden, P., Kubicek, K., Rodriguez‐Fernandez, A., Salem, M. A., Canton, S. E., Bressler, C., … Bauer, M. (2024). Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad. Advanced Science. https://doi.org/10.1002/advs.202404348 bibtex: '@article{Nowakowski_Huber‐Gedert_Elgabarty_Kalinko_Kubicki_Kertmen_Lindner_Khakhulin_Lima_Choi_et al._2024, title={Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad}, DOI={10.1002/advs.202404348}, journal={Advanced Science}, publisher={Wiley}, author={Nowakowski, Michał and Huber‐Gedert, Marina and Elgabarty, Hossam and Kalinko, Aleksandr and Kubicki, Jacek and Kertmen, Ahmet and Lindner, Natalia and Khakhulin, Dmitry and Lima, Frederico A. and Choi, Tae‐Kyu and et al.}, year={2024} }' chicago: Nowakowski, Michał, Marina Huber‐Gedert, Hossam Elgabarty, Aleksandr Kalinko, Jacek Kubicki, Ahmet Kertmen, Natalia Lindner, et al. “Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad.” Advanced Science, 2024. https://doi.org/10.1002/advs.202404348. ieee: 'M. Nowakowski et al., “Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad,” Advanced Science, 2024, doi: 10.1002/advs.202404348.' mla: Nowakowski, Michał, et al. “Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad.” Advanced Science, Wiley, 2024, doi:10.1002/advs.202404348. short: M. Nowakowski, M. Huber‐Gedert, H. Elgabarty, A. Kalinko, J. Kubicki, A. Kertmen, N. Lindner, D. Khakhulin, F.A. Lima, T. Choi, M. Biednov, L. Schmitz, N. Piergies, P. Zalden, K. Kubicek, A. Rodriguez‐Fernandez, M.A. Salem, S.E. Canton, C. Bressler, T.D. Kühne, W. Gawelda, M. Bauer, Advanced Science (2024). date_created: 2024-09-05T11:31:30Z date_updated: 2025-08-15T12:49:56Z department: - _id: '306' doi: 10.1002/advs.202404348 keyword: - Photo - Xray language: - iso: eng publication: Advanced Science publication_identifier: issn: - 2198-3844 - 2198-3844 publication_status: published publisher: Wiley status: public title: Ultrafast Two‐Color X‐Ray Emission Spectroscopy Reveals Excited State Landscape in a Base Metal Dyad type: journal_article user_id: '48467' year: '2024' ... --- _id: '52346' abstract: - lang: eng text: Promising cathode materials for fluoride-ion batteries (FIBs) are 3d transition metal containing oxides with Ruddlesden-Popper-type structure. So far, multi-elemental compositions were not investigated, but could alternate electrochemical performance similar to what has been found for cathode materials for lithium-ion batteries. Within this study, we investigate RP type La2Ni0.75Co0.25O4.08 as an intercalation-based active cathode material for all-solid-state FIBs. We determine the structural changes of La2Ni0.75Co0.25O4.08 during fluoride intercalation / de-intercalation by ex-situ X-ray diffraction, which showed that F- insertion leads to transformation of the parent phase to three different phases. Changes in Ni and Co oxidation states and coordination environment were examined by X-ray absorption spectroscopy and magnetic measurements in order to understand the complex reaction behaviour of the phases in detail, showing that the two transition metals behave differently in the charging and discharging process. Under optimized operating conditions, a cycle life of 120 cycles at a critical cut-off capacity of 40 mAh g-1 against Pb/PbF2 was obtained, which is one of the highest observed for intercalation electrode materials in FIBs so far. The average Coulombic efficiencies ranged from 85% to 90%. Thus, La2Ni0.75Co0.25O4.08 could be a promising candidate for cycling-stable high-energy cathode materials for all-solid-state FIBs author: - first_name: Vanita full_name: Vanita, Vanita last_name: Vanita - first_name: Aamir Iqbal full_name: Waidha, Aamir Iqbal last_name: Waidha - first_name: Sami full_name: Vasala, Sami last_name: Vasala - first_name: Pascal full_name: Puphal, Pascal last_name: Puphal - first_name: Roland full_name: Schoch, Roland id: '48467' last_name: Schoch orcid: 0000-0003-2061-7289 - first_name: Pieter full_name: Glatzel, Pieter last_name: Glatzel - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 - first_name: Oliver full_name: Clemens, Oliver last_name: Clemens citation: ama: Vanita V, Waidha AI, Vasala S, et al. Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries. Journal of Materials Chemistry A. 2024;(12). doi:10.1039/d4ta00704b apa: Vanita, V., Waidha, A. I., Vasala, S., Puphal, P., Schoch, R., Glatzel, P., Bauer, M., & Clemens, O. (2024). Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries. Journal of Materials Chemistry A, 12. https://doi.org/10.1039/d4ta00704b bibtex: '@article{Vanita_Waidha_Vasala_Puphal_Schoch_Glatzel_Bauer_Clemens_2024, title={Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries}, DOI={10.1039/d4ta00704b}, number={12}, journal={Journal of Materials Chemistry A}, publisher={Royal Society of Chemistry (RSC)}, author={Vanita, Vanita and Waidha, Aamir Iqbal and Vasala, Sami and Puphal, Pascal and Schoch, Roland and Glatzel, Pieter and Bauer, Matthias and Clemens, Oliver}, year={2024} }' chicago: Vanita, Vanita, Aamir Iqbal Waidha, Sami Vasala, Pascal Puphal, Roland Schoch, Pieter Glatzel, Matthias Bauer, and Oliver Clemens. “Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for All-Solid-State Fluoride Ion Batteries.” Journal of Materials Chemistry A, no. 12 (2024). https://doi.org/10.1039/d4ta00704b. ieee: 'V. Vanita et al., “Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries,” Journal of Materials Chemistry A, no. 12, 2024, doi: 10.1039/d4ta00704b.' mla: Vanita, Vanita, et al. “Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for All-Solid-State Fluoride Ion Batteries.” Journal of Materials Chemistry A, no. 12, Royal Society of Chemistry (RSC), 2024, doi:10.1039/d4ta00704b. short: V. Vanita, A.I. Waidha, S. Vasala, P. Puphal, R. Schoch, P. Glatzel, M. Bauer, O. Clemens, Journal of Materials Chemistry A (2024). date_created: 2024-03-07T10:01:09Z date_updated: 2025-08-15T12:50:31Z department: - _id: '306' doi: 10.1039/d4ta00704b issue: '12' keyword: - Xray language: - iso: eng publication: Journal of Materials Chemistry A publication_identifier: issn: - 2050-7488 - 2050-7496 publication_status: published publisher: Royal Society of Chemistry (RSC) status: public title: Insights into the First Multi-Transition-Metal Containing Ruddlesden Popper-Type Cathode for all-solid-state Fluoride Ion Batteries type: journal_article user_id: '48467' year: '2024' ... --- _id: '60216' abstract: - lang: eng text: Hydride donors such as DIBAL or CuH react with ZnO and ZrO2 via hydrogen spillover. This suggests that hydrogen spillover in catalysts based on these metal oxides may take place via initial hydride transfer and not via proton–electron transfer. author: - first_name: Michael full_name: Benz, Michael last_name: Benz - first_name: Osman full_name: Bunjaku, Osman last_name: Bunjaku - first_name: Michał full_name: Nowakowski, Michał id: '78878' last_name: Nowakowski orcid: 0000-0002-3734-7011 - first_name: Alexander full_name: Allgaier, Alexander last_name: Allgaier - first_name: Indro full_name: Biswas, Indro last_name: Biswas - first_name: Joris full_name: van Slageren, Joris last_name: van Slageren - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 - first_name: Deven P. full_name: Estes, Deven P. last_name: Estes citation: ama: 'Benz M, Bunjaku O, Nowakowski M, et al. Hydrogen spillover through hydride transfer: the reaction of ZnO and ZrO2 with strong hydride donors. Catalysis Science & Technology. 2024;14(20):5854-5863. doi:10.1039/d4cy00504j' apa: 'Benz, M., Bunjaku, O., Nowakowski, M., Allgaier, A., Biswas, I., van Slageren, J., Bauer, M., & Estes, D. P. (2024). Hydrogen spillover through hydride transfer: the reaction of ZnO and ZrO2 with strong hydride donors. Catalysis Science & Technology, 14(20), 5854–5863. https://doi.org/10.1039/d4cy00504j' bibtex: '@article{Benz_Bunjaku_Nowakowski_Allgaier_Biswas_van Slageren_Bauer_Estes_2024, title={Hydrogen spillover through hydride transfer: the reaction of ZnO and ZrO2 with strong hydride donors}, volume={14}, DOI={10.1039/d4cy00504j}, number={20}, journal={Catalysis Science & Technology}, publisher={Royal Society of Chemistry (RSC)}, author={Benz, Michael and Bunjaku, Osman and Nowakowski, Michał and Allgaier, Alexander and Biswas, Indro and van Slageren, Joris and Bauer, Matthias and Estes, Deven P.}, year={2024}, pages={5854–5863} }' chicago: 'Benz, Michael, Osman Bunjaku, Michał Nowakowski, Alexander Allgaier, Indro Biswas, Joris van Slageren, Matthias Bauer, and Deven P. Estes. “Hydrogen Spillover through Hydride Transfer: The Reaction of ZnO and ZrO2 with Strong Hydride Donors.” Catalysis Science & Technology 14, no. 20 (2024): 5854–63. https://doi.org/10.1039/d4cy00504j.' ieee: 'M. Benz et al., “Hydrogen spillover through hydride transfer: the reaction of ZnO and ZrO2 with strong hydride donors,” Catalysis Science & Technology, vol. 14, no. 20, pp. 5854–5863, 2024, doi: 10.1039/d4cy00504j.' mla: 'Benz, Michael, et al. “Hydrogen Spillover through Hydride Transfer: The Reaction of ZnO and ZrO2 with Strong Hydride Donors.” Catalysis Science & Technology, vol. 14, no. 20, Royal Society of Chemistry (RSC), 2024, pp. 5854–63, doi:10.1039/d4cy00504j.' short: M. Benz, O. Bunjaku, M. Nowakowski, A. Allgaier, I. Biswas, J. van Slageren, M. Bauer, D.P. Estes, Catalysis Science & Technology 14 (2024) 5854–5863. date_created: 2025-06-16T08:55:24Z date_updated: 2025-08-15T12:42:34Z department: - _id: '306' doi: 10.1039/d4cy00504j intvolume: ' 14' issue: '20' keyword: - Xray language: - iso: eng page: 5854-5863 publication: Catalysis Science & Technology publication_identifier: issn: - 2044-4753 - 2044-4761 publication_status: published publisher: Royal Society of Chemistry (RSC) status: public title: 'Hydrogen spillover through hydride transfer: the reaction of ZnO and ZrO2 with strong hydride donors' type: journal_article user_id: '48467' volume: 14 year: '2024' ... --- _id: '54024' abstract: - lang: eng text: Transition metal complexes, particularly copper hydrides, play an important role in various catalytic processes and molecular inorganic chemistry. This study employs synchrotron hard X‐ray spectroscopy to gain insights into the geometric and electronic properties of copper hydrides as potential catalysts for CO2 hydrogenation. The potential of high energy resolution X‐ray absorption near‐edge structure (HERFD‐XANES) and valence‐to‐core X‐ray emission (VtC‐XES) is demonstrated with measurement on Stryker's reagent (Cu6H6) and [Cu3(μ3‐H)(dpmppe)2](PF6)2 (Cu3H), alongside a non‐hydride copper compound (Cu‐I). The XANES analysis reveals that coordination geometries strongly influence the spectra, providing only indirect details about hydride coordination. The VtC‐XES analysis exhibits a distinct signal around 8975 eV, offering a diagnostic tool to identify hydride ligands. Theoretical calculations support and extend these findings by comparing hydride‐containing complexes with their hydride‐free counterparts. article_type: original author: - first_name: Lorena full_name: Fritsch, Lorena id: '44418' last_name: Fritsch - first_name: Pia full_name: Rehsies, Pia id: '46959' last_name: Rehsies - first_name: Wael full_name: Barakat, Wael last_name: Barakat - first_name: Deven P. full_name: Estes, Deven P. last_name: Estes - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 citation: ama: Fritsch L, Rehsies P, Barakat W, Estes DP, Bauer M. Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy. Chemistry – A European Journal. 2024;30(36). doi:10.1002/chem.202400357 apa: Fritsch, L., Rehsies, P., Barakat, W., Estes, D. P., & Bauer, M. (2024). Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy. Chemistry – A European Journal, 30(36). https://doi.org/10.1002/chem.202400357 bibtex: '@article{Fritsch_Rehsies_Barakat_Estes_Bauer_2024, title={Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy}, volume={30}, DOI={10.1002/chem.202400357}, number={36}, journal={Chemistry – A European Journal}, publisher={Wiley}, author={Fritsch, Lorena and Rehsies, Pia and Barakat, Wael and Estes, Deven P. and Bauer, Matthias}, year={2024} }' chicago: Fritsch, Lorena, Pia Rehsies, Wael Barakat, Deven P. Estes, and Matthias Bauer. “Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy.” Chemistry – A European Journal 30, no. 36 (2024). https://doi.org/10.1002/chem.202400357. ieee: 'L. Fritsch, P. Rehsies, W. Barakat, D. P. Estes, and M. Bauer, “Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy,” Chemistry – A European Journal, vol. 30, no. 36, 2024, doi: 10.1002/chem.202400357.' mla: Fritsch, Lorena, et al. “Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy.” Chemistry – A European Journal, vol. 30, no. 36, Wiley, 2024, doi:10.1002/chem.202400357. short: L. Fritsch, P. Rehsies, W. Barakat, D.P. Estes, M. Bauer, Chemistry – A European Journal 30 (2024). date_created: 2024-05-07T08:41:11Z date_updated: 2025-08-15T12:51:10Z department: - _id: '306' doi: 10.1002/chem.202400357 intvolume: ' 30' issue: '36' keyword: - Xray language: - iso: eng publication: Chemistry – A European Journal publication_identifier: issn: - 0947-6539 - 1521-3765 publication_status: published publisher: Wiley status: public title: Detection and Characterization of Hydride Ligands in Copper Complexes by Hard X‐ray Spectroscopy type: journal_article user_id: '48467' volume: 30 year: '2024' ... --- _id: '54969' abstract: - lang: eng text: This work presents a new and facile route for the preparation of iron oxide-based catalysts supported on alumina, which enables the targeted synthesis of catalysts with an increased amount of isolated tetrahedrally coordinated iron centers compared to a conventional impregnation procedure, and therefore leads to an increase in activity for CO oxidation reaction. By a multi-step impregnation–calcination protocol, the catalysts were synthesized with iron loadings of between 1 and 10 wt%, and their catalytic activity was then compared with a 10 wt% loaded catalyst prepared by conventional single impregnation. With a loading of 8 wt%, the presented catalysts showed an improved catalytic activity regarding light-off and full conversion temperatures compared to this reference. Through the application of several analytical methods (PXRD, PDF, DRUVS, SEM, XAFS), the improved catalytic activity can be correlated with an increased amount of isolated iron centers and a significantly reduced fraction of agglomerates or particles. article_number: '416' article_type: original author: - first_name: Steffen full_name: Schlicher, Steffen last_name: Schlicher - first_name: Roland full_name: Schoch, Roland id: '48467' last_name: Schoch orcid: 0000-0003-2061-7289 - first_name: Nils full_name: Prinz, Nils last_name: Prinz - first_name: Mirijam full_name: Zobel, Mirijam last_name: Zobel - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 citation: ama: Schlicher S, Schoch R, Prinz N, Zobel M, Bauer M. New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation. Catalysts. 2024;14(7). doi:10.3390/catal14070416 apa: Schlicher, S., Schoch, R., Prinz, N., Zobel, M., & Bauer, M. (2024). New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation. Catalysts, 14(7), Article 416. https://doi.org/10.3390/catal14070416 bibtex: '@article{Schlicher_Schoch_Prinz_Zobel_Bauer_2024, title={New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation}, volume={14}, DOI={10.3390/catal14070416}, number={7416}, journal={Catalysts}, publisher={MDPI AG}, author={Schlicher, Steffen and Schoch, Roland and Prinz, Nils and Zobel, Mirijam and Bauer, Matthias}, year={2024} }' chicago: Schlicher, Steffen, Roland Schoch, Nils Prinz, Mirijam Zobel, and Matthias Bauer. “New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation.” Catalysts 14, no. 7 (2024). https://doi.org/10.3390/catal14070416. ieee: 'S. Schlicher, R. Schoch, N. Prinz, M. Zobel, and M. Bauer, “New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation,” Catalysts, vol. 14, no. 7, Art. no. 416, 2024, doi: 10.3390/catal14070416.' mla: Schlicher, Steffen, et al. “New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation.” Catalysts, vol. 14, no. 7, 416, MDPI AG, 2024, doi:10.3390/catal14070416. short: S. Schlicher, R. Schoch, N. Prinz, M. Zobel, M. Bauer, Catalysts 14 (2024). date_created: 2024-07-02T07:10:14Z date_updated: 2025-08-15T12:50:52Z department: - _id: '306' doi: 10.3390/catal14070416 intvolume: ' 14' issue: '7' keyword: - Catalysis language: - iso: eng publication: Catalysts publication_identifier: issn: - 2073-4344 publication_status: published publisher: MDPI AG status: public title: New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation type: journal_article user_id: '48467' volume: 14 year: '2024' ... --- _id: '57864' abstract: - lang: eng text: This book includes the proceedings of the 21st International Conference on Smart Technologies & Education (STE2024). The "International Conference on Smart Technologies & Education" (STE) is an annual global meeting dedicated to the fundamentals, applications, and experiences in the field of Smart Technologies, Online, Remote, and Virtual Engineering, Virtual Instrumentation, and other related new technologies. Nowadays, online and smart technologies are the core of most fields of engineering and the whole society. Consequently, the motto of this year’s STE2024 was "Smart Technologies for a Sustainable Future". The STE conference is the successor of the long-standing annual REV Conferences and the annual meeting of the International Association of Online Engineering (IAOE) together with the EduNet World Association (EWA) and the International Education Network (EduNet). In a globally connected world, the interest in online collaboration, teleworking, remote services, and other digital working environments is rapidly increasing. In response to that, the general objective of this conference is to contribute and discuss fundamentals, applications, and experiences in the field of Online and Remote Engineering, Virtual Instrumentation, and other related new technologies like Cross Reality, Open Science and Big Data, Internet of Things and Industrial Internet of Things, Industry 4.0, Cyber Security, and M2M and Smart Objects. Another objective of the conference is to discuss guidelines and new concepts for engineering education in higher and vocational education institutions, including emerging technologies in learning, MOOCs and MOOLs, and Open Resources. This year, STE2024 has been organized in Helsinki, Finland as an onsite event supporting remote presentations, from March 6 until March 8, 2024. The co-organizers of STE2024 were the Arcada University of Applied Sciences, the International Association of Online Engineering (IAOE) together with the Global Online Laboratory Consortium (GOLC), the International Education Network (EduNet), and the EduNet World Association (EWA). STE2024 has attracted 140 scientists and industrial leaders from more than 40 countries author: - first_name: Mesut full_name: Alptekin, Mesut id: '11763' last_name: Alptekin orcid: 0009-0004-8545-1165 - first_name: Katrin full_name: Temmen, Katrin id: '30086' last_name: Temmen citation: ama: 'Alptekin M, Temmen K. Extended Results for Effectiveness Study of an Augmented Reality App as Preparation Tool for Electrical Engineering Laboratory Courses. In: Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1. Vol 1. 1. Springer Nature; 2024:297.' apa: 'Alptekin, M., & Temmen, K. (2024). Extended Results for Effectiveness Study of an Augmented Reality App as Preparation Tool for Electrical Engineering Laboratory Courses. Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1, 1, 297.' bibtex: '@inproceedings{Alptekin_Temmen_2024, series={1}, title={Extended Results for Effectiveness Study of an Augmented Reality App as Preparation Tool for Electrical Engineering Laboratory Courses}, volume={1}, booktitle={Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1}, publisher={Springer Nature}, author={Alptekin, Mesut and Temmen, Katrin}, year={2024}, pages={297}, collection={1} }' chicago: 'Alptekin, Mesut, and Katrin Temmen. “Extended Results for Effectiveness Study of an Augmented Reality App as Preparation Tool for Electrical Engineering Laboratory Courses.” In Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1, 1:297. 1. Springer Nature, 2024.' ieee: 'M. Alptekin and K. Temmen, “Extended Results for Effectiveness Study of an Augmented Reality App as Preparation Tool for Electrical Engineering Laboratory Courses,” in Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1, 2024, vol. 1, p. 297.' mla: 'Alptekin, Mesut, and Katrin Temmen. “Extended Results for Effectiveness Study of an Augmented Reality App as Preparation Tool for Electrical Engineering Laboratory Courses.” Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1, vol. 1, Springer Nature, 2024, p. 297.' short: 'M. Alptekin, K. Temmen, in: Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1, Springer Nature, 2024, p. 297.' date_created: 2024-12-29T11:04:18Z date_updated: 2025-08-19T08:49:14Z department: - _id: '34' - _id: '300' intvolume: ' 1' language: - iso: eng page: '297' project: - _id: '1387' name: DigiSelF - Digitalisierung als Herausforderung und Innovation in der Hochschullehre publication: 'Smart Technologies for a Sustainable Future: Proceedings of the 21st International Conference on Smart Technologies & Education. Volume 1' publication_identifier: isbn: - 3-031-61891-2 978-3-031-61891-8 publisher: Springer Nature series_title: '1' status: public title: Extended Results for Effectiveness Study of an Augmented Reality App as Preparation Tool for Electrical Engineering Laboratory Courses type: conference user_id: '11763' volume: 1 year: '2024' ... --- _id: '61188' author: - first_name: Johanna full_name: Schulze, Johanna id: '34412' last_name: Schulze orcid: 0000-0001-6104-8583 - first_name: Bardo full_name: Herzig, Bardo id: '217' last_name: Herzig - first_name: Regine full_name: Lehberger, Regine id: '98966' last_name: Lehberger orcid: 0009-0007-0289-0288 citation: ama: 'Schulze J, Herzig B, Lehberger R. Agile Gestaltung digitalisierungsbezogener Schulentwicklung in der Lehrkräftebildung . In: Herzig B, Eickelmann B, Schwabl F, Schulze J, Niemann J, eds. Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven . Vol 1. 1st ed. Paderborner Beiträge zur Bildungsforschung und Lehrkräftebildung. Waxmann; 2024:75-83. doi:10.31244/9783830998372' apa: Schulze, J., Herzig, B., & Lehberger, R. (2024). Agile Gestaltung digitalisierungsbezogener Schulentwicklung in der Lehrkräftebildung . In B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, & J. Niemann (Eds.), Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven (1st ed., Vol. 1, pp. 75–83). Waxmann. https://doi.org/10.31244/9783830998372 bibtex: '@inbook{Schulze_Herzig_Lehberger_2024, place={Münster}, edition={1}, series={Paderborner Beiträge zur Bildungsforschung und Lehrkräftebildung}, title={Agile Gestaltung digitalisierungsbezogener Schulentwicklung in der Lehrkräftebildung }, volume={1}, DOI={10.31244/9783830998372}, booktitle={Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven }, publisher={Waxmann}, author={Schulze, Johanna and Herzig, Bardo and Lehberger, Regine}, editor={Herzig, Bardo and Eickelmann, Birgit and Schwabl, Franziska and Schulze, Johanna and Niemann, Jan}, year={2024}, pages={75–83}, collection={Paderborner Beiträge zur Bildungsforschung und Lehrkräftebildung} }' chicago: 'Schulze, Johanna, Bardo Herzig, and Regine Lehberger. “Agile Gestaltung digitalisierungsbezogener Schulentwicklung in der Lehrkräftebildung .” In Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven , edited by Bardo Herzig, Birgit Eickelmann, Franziska Schwabl, Johanna Schulze, and Jan Niemann, 1st ed., 1:75–83. Paderborner Beiträge zur Bildungsforschung und Lehrkräftebildung. Münster: Waxmann, 2024. https://doi.org/10.31244/9783830998372.' ieee: 'J. Schulze, B. Herzig, and R. Lehberger, “Agile Gestaltung digitalisierungsbezogener Schulentwicklung in der Lehrkräftebildung ,” in Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven , 1st ed., vol. 1, B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, and J. Niemann, Eds. Münster: Waxmann, 2024, pp. 75–83.' mla: Schulze, Johanna, et al. “Agile Gestaltung digitalisierungsbezogener Schulentwicklung in der Lehrkräftebildung .” Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven , edited by Bardo Herzig et al., 1st ed., vol. 1, Waxmann, 2024, pp. 75–83, doi:10.31244/9783830998372. short: 'J. Schulze, B. Herzig, R. Lehberger, in: B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, J. Niemann (Eds.), Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven , 1st ed., Waxmann, Münster, 2024, pp. 75–83.' date_created: 2025-09-11T09:10:29Z date_updated: 2025-09-11T09:10:48Z department: - _id: '459' doi: 10.31244/9783830998372 edition: '1' editor: - first_name: Bardo full_name: Herzig, Bardo last_name: Herzig - first_name: Birgit full_name: Eickelmann, Birgit last_name: Eickelmann - first_name: Franziska full_name: Schwabl, Franziska last_name: Schwabl - first_name: Johanna full_name: Schulze, Johanna last_name: Schulze - first_name: Jan full_name: Niemann, Jan last_name: Niemann intvolume: ' 1' language: - iso: ger page: 75-83 place: Münster project: - _id: '606' name: COMeIN - Communities of Practice NRW für eine innovative Lehrerbildung publication: 'Lehrkräftebildung in der digitalen Welt. Zukunftsorientierte Forschungs- und Praxisperspektiven ' publication_identifier: eisbn: - 978-3-8309-9837-2 isbn: - 978-3-8309-4837-7 issn: - 2944-6791 publication_status: published publisher: Waxmann series_title: Paderborner Beiträge zur Bildungsforschung und Lehrkräftebildung status: public title: 'Agile Gestaltung digitalisierungsbezogener Schulentwicklung in der Lehrkräftebildung ' type: book_chapter user_id: '66956' volume: 1 year: '2024' ...