--- _id: '36843' author: - first_name: Julia full_name: Eckel, Julia id: '94407' last_name: Eckel - first_name: Elisa full_name: Linseisen, Elisa last_name: Linseisen citation: ama: 'Eckel J, Linseisen E. Editorial: Anschaulichkeit – Wissen. Macht. Alternativen. Rabbit Eye – Zeitschrift für Filmforschung. 2022;(012).' apa: 'Eckel, J., & Linseisen, E. (2022). Editorial: Anschaulichkeit – Wissen. Macht. Alternativen. Rabbit Eye – Zeitschrift Für Filmforschung, 012.' bibtex: '@article{Eckel_Linseisen_2022, title={Editorial: Anschaulichkeit – Wissen. Macht. Alternativen.}, number={012}, journal={Rabbit Eye – Zeitschrift für Filmforschung}, author={Eckel, Julia and Linseisen, Elisa}, year={2022} }' chicago: 'Eckel, Julia, and Elisa Linseisen. “Editorial: Anschaulichkeit – Wissen. Macht. Alternativen.” Rabbit Eye – Zeitschrift Für Filmforschung, no. 012 (2022).' ieee: 'J. Eckel and E. Linseisen, “Editorial: Anschaulichkeit – Wissen. Macht. Alternativen.,” Rabbit Eye – Zeitschrift für Filmforschung, no. 012, 2022.' mla: 'Eckel, Julia, and Elisa Linseisen. “Editorial: Anschaulichkeit – Wissen. Macht. Alternativen.” Rabbit Eye – Zeitschrift Für Filmforschung, no. 012, 2022.' short: J. Eckel, E. Linseisen, Rabbit Eye – Zeitschrift Für Filmforschung (2022). date_created: 2023-01-15T11:21:08Z date_updated: 2023-01-15T11:21:17Z department: - _id: '11' - _id: '731' issue: '012' keyword: - Anschaulichkeit - Anschauung - Film - Epistemologie audiovisueller Medien - Erklärbarkeit - Anschauen - Sichtbarkeit - Unsichtbarkeit language: - iso: eng main_file_link: - open_access: '1' url: https://www.rabbiteye.de/2022/12/eckel_linseisen_editorial-anschaulichkeit.pdf oa: '1' publication: Rabbit Eye – Zeitschrift für Filmforschung publication_identifier: issn: - 2192-5445 status: public title: 'Editorial: Anschaulichkeit – Wissen. Macht. Alternativen.' type: journal_article user_id: '94407' year: '2022' ... --- _id: '6542' abstract: - lang: eng text: Transient changes of the optical response of WS2 monolayers are studied by femtosecond broadband pump–probe spectroscopy. Time-dependent absorption spectra are analyzed by tracking the line width broadening, bleaching, and energy shift of the main exciton resonance as a function of time delay after the excitation. Two main sources for the pump-induced changes of the optical response are identified. Specifically, we find an interplay between modifications induced by many-body interactions from photoexcited carriers and by the subsequent transfer of the excitation to the phonon system followed by cooling of the material through the heat transfer to the substrate. article_type: original author: - first_name: Claudia full_name: Ruppert, Claudia last_name: Ruppert - first_name: Alexey full_name: Chernikov, Alexey last_name: Chernikov - first_name: Heather M. full_name: Hill, Heather M. last_name: Hill - first_name: Albert F. full_name: Rigosi, Albert F. last_name: Rigosi - first_name: Tony F. full_name: Heinz, Tony F. last_name: Heinz citation: ama: Ruppert C, Chernikov A, Hill HM, Rigosi AF, Heinz TF. The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation. Nano Letters. 2017;17(2):644-651. doi:10.1021/acs.nanolett.6b03513 apa: Ruppert, C., Chernikov, A., Hill, H. M., Rigosi, A. F., & Heinz, T. F. (2017). The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation. Nano Letters, 17(2), 644–651. https://doi.org/10.1021/acs.nanolett.6b03513 bibtex: '@article{Ruppert_Chernikov_Hill_Rigosi_Heinz_2017, title={The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation}, volume={17}, DOI={10.1021/acs.nanolett.6b03513}, number={2}, journal={Nano Letters}, publisher={American Chemical Society (ACS)}, author={Ruppert, Claudia and Chernikov, Alexey and Hill, Heather M. and Rigosi, Albert F. and Heinz, Tony F.}, year={2017}, pages={644–651} }' chicago: 'Ruppert, Claudia, Alexey Chernikov, Heather M. Hill, Albert F. Rigosi, and Tony F. Heinz. “The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation.” Nano Letters 17, no. 2 (2017): 644–51. https://doi.org/10.1021/acs.nanolett.6b03513.' ieee: C. Ruppert, A. Chernikov, H. M. Hill, A. F. Rigosi, and T. F. Heinz, “The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation,” Nano Letters, vol. 17, no. 2, pp. 644–651, 2017. mla: Ruppert, Claudia, et al. “The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation.” Nano Letters, vol. 17, no. 2, American Chemical Society (ACS), 2017, pp. 644–51, doi:10.1021/acs.nanolett.6b03513. short: C. Ruppert, A. Chernikov, H.M. Hill, A.F. Rigosi, T.F. Heinz, Nano Letters 17 (2017) 644–651. date_created: 2019-01-09T10:00:23Z date_updated: 2022-01-06T07:03:11Z department: - _id: '230' doi: 10.1021/acs.nanolett.6b03513 intvolume: ' 17' issue: '2' keyword: - Atomically thin 2D materials - carrier and phonon dynamics - ultrafast spectroscopy language: - iso: eng page: 644-651 project: - _id: '53' name: TRR 142 - _id: '54' name: TRR 142 - Project Area A - _id: '58' name: TRR 142 - Subproject A1 publication: Nano Letters publication_identifier: issn: - 1530-6984 - 1530-6992 publication_status: published publisher: American Chemical Society (ACS) status: public title: The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation type: journal_article user_id: '49428' volume: 17 year: '2017' ... --- _id: '48967' citation: ama: Schulze M, Lange-Berndt P, Rübel D, Jansen G, Kunsthalle Düsseldorf, eds. Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980. Snoeck Verlagsgesellschaft mbH; 2017. apa: Schulze, M., Lange-Berndt, P., Rübel, D., Jansen, G., & Kunsthalle Düsseldorf (Eds.). (2017). Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980. Snoeck Verlagsgesellschaft mbH. bibtex: '@book{Schulze_Lange-Berndt_Rübel_Jansen_Kunsthalle Düsseldorf_2017, place={Köln}, title={Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980}, publisher={Snoeck Verlagsgesellschaft mbH}, year={2017} }' chicago: 'Schulze, Max, Petra Lange-Berndt, Dietmar Rübel, Gregor Jansen, and Kunsthalle Düsseldorf, eds. Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980. Köln: Snoeck Verlagsgesellschaft mbH, 2017.' ieee: 'M. Schulze, P. Lange-Berndt, D. Rübel, G. Jansen, and Kunsthalle Düsseldorf, Eds., Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980. Köln: Snoeck Verlagsgesellschaft mbH, 2017.' mla: Schulze, Max, et al., editors. Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980. Snoeck Verlagsgesellschaft mbH, 2017. short: M. Schulze, P. Lange-Berndt, D. Rübel, G. Jansen, Kunsthalle Düsseldorf, eds., Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980, Snoeck Verlagsgesellschaft mbH, Köln, 2017. corporate_editor: - Kunsthalle Düsseldorf date_created: 2023-11-16T12:50:54Z date_updated: 2023-11-16T12:51:13Z editor: - first_name: Max full_name: Schulze, Max id: '77991' last_name: Schulze - first_name: Petra full_name: Lange-Berndt, Petra last_name: Lange-Berndt - first_name: Dietmar full_name: Rübel, Dietmar last_name: Rübel - first_name: Gregor full_name: Jansen, Gregor last_name: Jansen extern: '1' keyword: - Kollaborationen - Rheinland - Szene - Drogen - Freaks - Musik - Gender - Nationalsozialismus - Tabu - Provokation - Subkultur - Malerei - Comic - Fotografie - Film language: - iso: ger - iso: eng place: Köln publication_identifier: isbn: - 978-3-86442-223-2 publication_status: published publisher: Snoeck Verlagsgesellschaft mbH status: public title: Singular/Plural. Kollaborationen in der Post-Pop-Polit Arena, 1969-1980 type: book_editor user_id: '77991' year: '2017' ... --- _id: '9785' abstract: - lang: eng text: Hydrothermal method enables to synthesize high quality piezoelectric materials. To shorten the reaction time and to get higher quality materials, we propose an ultrasonic irradiation to the solution during the hydrothermal method. We named it ultrasonic assisted hydrothermal method (UAHTM). We have synthesized lead-free piezoelectric material and PZT thin film and the effect of UAHTM have been confirmed. In this study, we tried to improve UAHTM. First, to generate powerful and stable ultrasonic irradiation at high temperature on UAHTM, we developed a new transducer using LiNbO3 single crystal. Second, to prevent contamination to the materials, A Teflon cover on the tip of transducer was attached. author: - first_name: Gaku full_name: Isobe, Gaku last_name: Isobe - first_name: Ryo full_name: Ageba, Ryo last_name: Ageba - first_name: Takafumi full_name: Maeda, Takafumi last_name: Maeda - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel - first_name: Takeshi full_name: Morita, Takeshi last_name: Morita citation: ama: 'Isobe G, Ageba R, Maeda T, Bornmann P, Hemsel T, Morita T. Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method. In: B. J. Linde B, Paczkowski J, Ponikwicki N, eds. AIP Conference Proceedings. Vol 1433. AIP; 2012:569-572. doi:10.1063/1.3703251' apa: Isobe, G., Ageba, R., Maeda, T., Bornmann, P., Hemsel, T., & Morita, T. (2012). Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method. In B. B. J. Linde, J. Paczkowski, & N. Ponikwicki (Eds.), AIP Conference Proceedings (Vol. 1433, pp. 569–572). AIP. https://doi.org/10.1063/1.3703251 bibtex: '@inproceedings{Isobe_Ageba_Maeda_Bornmann_Hemsel_Morita_2012, title={Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method}, volume={1433}, DOI={10.1063/1.3703251}, number={1}, booktitle={AIP Conference Proceedings}, publisher={AIP}, author={Isobe, Gaku and Ageba, Ryo and Maeda, Takafumi and Bornmann, Peter and Hemsel, Tobias and Morita, Takeshi}, editor={B. J. Linde, Bogumil and Paczkowski, Jacek and Ponikwicki, NikodemEditors}, year={2012}, pages={569–572} }' chicago: Isobe, Gaku, Ryo Ageba, Takafumi Maeda, Peter Bornmann, Tobias Hemsel, and Takeshi Morita. “Synthesis of Piezoelectric Materials by Ultrasonic Assisted Hydrothermal Method.” In AIP Conference Proceedings, edited by Bogumil B. J. Linde, Jacek Paczkowski, and Nikodem Ponikwicki, 1433:569–72. AIP, 2012. https://doi.org/10.1063/1.3703251. ieee: G. Isobe, R. Ageba, T. Maeda, P. Bornmann, T. Hemsel, and T. Morita, “Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method,” in AIP Conference Proceedings, 2012, vol. 1433, no. 1, pp. 569–572. mla: Isobe, Gaku, et al. “Synthesis of Piezoelectric Materials by Ultrasonic Assisted Hydrothermal Method.” AIP Conference Proceedings, edited by Bogumil B. J. Linde et al., vol. 1433, no. 1, AIP, 2012, pp. 569–72, doi:10.1063/1.3703251. short: 'G. Isobe, R. Ageba, T. Maeda, P. Bornmann, T. Hemsel, T. Morita, in: B. B. J. Linde, J. Paczkowski, N. Ponikwicki (Eds.), AIP Conference Proceedings, AIP, 2012, pp. 569–572.' date_created: 2019-05-13T13:21:56Z date_updated: 2022-01-06T07:04:20Z department: - _id: '151' doi: 10.1063/1.3703251 editor: - first_name: Bogumil full_name: B. J. Linde, Bogumil last_name: B. J. Linde - first_name: Jacek full_name: Paczkowski, Jacek last_name: Paczkowski - first_name: Nikodem full_name: Ponikwicki, Nikodem last_name: Ponikwicki intvolume: ' 1433' issue: '1' keyword: - contamination - lead compounds - piezoelectric materials - piezoelectric thin films - piezoelectric transducers - ultrasonic effects language: - iso: eng page: 569-572 publication: AIP Conference Proceedings publisher: AIP quality_controlled: '1' status: public title: Synthesis of piezoelectric materials by ultrasonic assisted hydrothermal method type: conference user_id: '55222' volume: 1433 year: '2012' ... --- _id: '4379' abstract: - lang: eng text: Uniform mesoporous Si double layers are formed on 4 inch p-type < 100> wafers with an off orientation of 6º towards < 111> by means of electrochemical etching in ethanoic-based HF electrolytes. These substrates are of interest for the epitaxial growth of III–V compound semiconductor stacks on their top for the production of multi-junction solar cells and very thin electronic devices. We demonstrate transfer of porous layers after an annealing process in hydrogen atmosphere. Electron Back-Scatter Diffraction analysis confirms that the substrate orientation is conserved during the etching and annealing steps. Confocal μ-Raman spectroscopy analysis shows a decrease in the Raman signal intensity after etching and a subsequent increase after annealing while no shift is observed. By means of Atomic Force Microscopy, analysis the surface appearance after the etching and annealing steps can be visualized. The mean surface roughness varies during the process from 0.55 nm for the unprocessed wafers to 0.27 nm after etching and 0.78 nm after annealing. The decrease of average roughness after etching is caused by an electropolishing step prior to porous formation. Despite of slight increase of mean surface roughness after annealing the samples are still appropriate for high quality epitaxial growth and subsequent lift-off. article_type: original author: - first_name: E. full_name: Garralaga Rojas, E. last_name: Garralaga Rojas - first_name: B. full_name: Terheiden, B. last_name: Terheiden - first_name: H. full_name: Plagwitz, H. last_name: Plagwitz - first_name: J. full_name: Hensen, J. last_name: Hensen - first_name: V. full_name: Wiedemeier, V. last_name: Wiedemeier - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 - first_name: R. full_name: Brendel, R. last_name: Brendel citation: ama: Garralaga Rojas E, Terheiden B, Plagwitz H, et al. Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111). Thin Solid Films. 2011;520(1):606-609. doi:10.1016/j.tsf.2011.07.063 apa: Garralaga Rojas, E., Terheiden, B., Plagwitz, H., Hensen, J., Wiedemeier, V., Berth, G., … Brendel, R. (2011). Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111). Thin Solid Films, 520(1), 606–609. https://doi.org/10.1016/j.tsf.2011.07.063 bibtex: '@article{Garralaga Rojas_Terheiden_Plagwitz_Hensen_Wiedemeier_Berth_Zrenner_Brendel_2011, title={Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111)}, volume={520}, DOI={10.1016/j.tsf.2011.07.063}, number={1}, journal={Thin Solid Films}, publisher={Elsevier BV}, author={Garralaga Rojas, E. and Terheiden, B. and Plagwitz, H. and Hensen, J. and Wiedemeier, V. and Berth, Gerhard and Zrenner, Artur and Brendel, R.}, year={2011}, pages={606–609} }' chicago: 'Garralaga Rojas, E., B. Terheiden, H. Plagwitz, J. Hensen, V. Wiedemeier, Gerhard Berth, Artur Zrenner, and R. Brendel. “Lift-off of Mesoporous Layers by Electrochemical Etching on Si (100) Substrates with Miscut of 6° off towards (111).” Thin Solid Films 520, no. 1 (2011): 606–9. https://doi.org/10.1016/j.tsf.2011.07.063.' ieee: E. Garralaga Rojas et al., “Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111),” Thin Solid Films, vol. 520, no. 1, pp. 606–609, 2011. mla: Garralaga Rojas, E., et al. “Lift-off of Mesoporous Layers by Electrochemical Etching on Si (100) Substrates with Miscut of 6° off towards (111).” Thin Solid Films, vol. 520, no. 1, Elsevier BV, 2011, pp. 606–09, doi:10.1016/j.tsf.2011.07.063. short: E. Garralaga Rojas, B. Terheiden, H. Plagwitz, J. Hensen, V. Wiedemeier, G. Berth, A. Zrenner, R. Brendel, Thin Solid Films 520 (2011) 606–609. date_created: 2018-09-11T14:21:12Z date_updated: 2022-01-06T07:01:00Z department: - _id: '15' - _id: '230' - _id: '35' doi: 10.1016/j.tsf.2011.07.063 intvolume: ' 520' issue: '1' keyword: - Porous Si - Layer transfer - Thin-film - Photovoltaics language: - iso: eng page: 606-609 publication: Thin Solid Films publication_identifier: issn: - 0040-6090 publication_status: published publisher: Elsevier BV status: public title: Lift-off of mesoporous layers by electrochemical etching on Si (100) substrates with miscut of 6° off towards (111) type: journal_article user_id: '49428' volume: 520 year: '2011' ... --- _id: '9743' abstract: - lang: eng text: The hydrothermal method enables the production of high-quality piezoelectric materials. In this study, we propose to irradiate the reaction solutions with ultrasonic power during the hydrothermal method to obtain a shorter reaction time and a smooth film surface. A high-pressure reaction container for the ultrasonic transducer was newly developed, and the ultrasonically-assisted hydrothermal method was examined by using this container. The effect of ultrasonic assist on the synthesis of lead-zirconate-titanate (PZT) thin films and (K,Na)NbO$_{3}$ powders was verified. Thicker PZT film, thickness around 10 ${\mu}$m, could be obtained in one process, and (K,Na)NbO$_{3}$ powder was synthesized in half the previous reaction time. author: - first_name: Ryo full_name: Ageba, Ryo last_name: Ageba - first_name: Yoichi full_name: Kadota, Yoichi last_name: Kadota - first_name: Takafumi full_name: Maeda, Takafumi last_name: Maeda - first_name: Norihito full_name: Takiguchi, Norihito last_name: Takiguchi - first_name: Takeshi full_name: Morita, Takeshi last_name: Morita - first_name: Mutsuo full_name: Ishikawa, Mutsuo last_name: Ishikawa - first_name: Peter full_name: Bornmann, Peter last_name: Bornmann - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel citation: ama: Ageba R, Kadota Y, Maeda T, et al. Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. Journal of Korean Physical Society. 2010;57(4):918-923. doi:10.3938/jkps.57.918 apa: Ageba, R., Kadota, Y., Maeda, T., Takiguchi, N., Morita, T., Ishikawa, M., … Hemsel, T. (2010). Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis. Journal of Korean Physical Society, 57(4), 918–923. https://doi.org/10.3938/jkps.57.918 bibtex: '@article{Ageba_Kadota_Maeda_Takiguchi_Morita_Ishikawa_Bornmann_Hemsel_2010, title={Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis}, volume={57}, DOI={10.3938/jkps.57.918}, number={4}, journal={Journal of Korean Physical Society}, author={Ageba, Ryo and Kadota, Yoichi and Maeda, Takafumi and Takiguchi, Norihito and Morita, Takeshi and Ishikawa, Mutsuo and Bornmann, Peter and Hemsel, Tobias}, year={2010}, pages={918–923} }' chicago: 'Ageba, Ryo, Yoichi Kadota, Takafumi Maeda, Norihito Takiguchi, Takeshi Morita, Mutsuo Ishikawa, Peter Bornmann, and Tobias Hemsel. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” Journal of Korean Physical Society 57, no. 4 (2010): 918–23. https://doi.org/10.3938/jkps.57.918.' ieee: R. Ageba et al., “Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis,” Journal of Korean Physical Society, vol. 57, no. 4, pp. 918–923, 2010. mla: Ageba, Ryo, et al. “Ultrasonically-Assisted Hydrothermal Method for Ferroelectric Material Synthesis.” Journal of Korean Physical Society, vol. 57, no. 4, 2010, pp. 918–23, doi:10.3938/jkps.57.918. short: R. Ageba, Y. Kadota, T. Maeda, N. Takiguchi, T. Morita, M. Ishikawa, P. Bornmann, T. Hemsel, Journal of Korean Physical Society 57 (2010) 918–923. date_created: 2019-05-13T09:35:33Z date_updated: 2022-01-06T07:04:19Z department: - _id: '151' doi: 10.3938/jkps.57.918 intvolume: ' 57' issue: '4' keyword: - Hydrothermal method - High-power ultrasonic - PZT thin film - Lead-free piezoelectric materials language: - iso: eng page: 918-923 publication: Journal of Korean Physical Society publication_identifier: issn: - 1948-5719 quality_controlled: '1' status: public title: Ultrasonically-assisted Hydrothermal Method for Ferroelectric Material Synthesis type: journal_article user_id: '55222' volume: 57 year: '2010' ...