--- _id: '9740' abstract: - lang: eng text: Die Integration von Selbstoptimierung in mechatronische Systeme beinhaltet sowohl Risiken als auch Potenziale für die Verlässlichkeit. Die Risiken entstehen durch die Selbstoptimierung in den komplexen Systemen, da das Systemverhalten nur begrenzt im Voraus vorhersehbar ist. Daher wurde innerhalb des Sonderforschungsbereichs 614 ''Selbstoptimierende Systeme des Maschinenbaus" ein mehrstufiges Verlässlichkeitskonzept entworfen, welches das Ziel Verlässlichkeit stärker im Zielsystem verankert. In diesem Beitrag wird zum einen das erarbeitete Verlässlichkeitskonzept und zum anderen die Anwendung dieses Konzepts innerhalb des aktiven Spurführungsmoduls eines schienengebundenen Fahrzeugs vorgestellt. Um Programmierfehler auszuschließen wurde das Verlässlichkeitskonzept modelliert und über Model Checking verifiziert. Anhand von Simulationsergebnissen wird gezeigt, wie durch das mehrstufige Verlässlichkeitskonzept auf einen Ausfall eines Wirbelstromsensors des aktiven Spurführungsmoduls reagiert werden kann. author: - first_name: Christoph full_name: Sondermann-Wölke, Christoph last_name: Sondermann-Wölke - first_name: Jens full_name: Geisler, Jens last_name: Geisler - first_name: Martin full_name: Hirsch, Martin last_name: Hirsch - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel citation: ama: 'Sondermann-Wölke C, Geisler J, Hirsch M, Hemsel T. Verlässlichkeit im aktiven selbstoptimierenden Spurführungsmodul eines schienengebundenen Fahrzeugs. In: Gausemeier J, Rammig FJ, Trächtler A, eds. Entwurf Mechatronischer Systeme. Vol 250. HNI-Verlagsschriftenreihe. Paderborn; 2009:231-242.' apa: Sondermann-Wölke, C., Geisler, J., Hirsch, M., & Hemsel, T. (2009). Verlässlichkeit im aktiven selbstoptimierenden Spurführungsmodul eines schienengebundenen Fahrzeugs. In J. Gausemeier, F. J. Rammig, & A. Trächtler (Eds.), Entwurf mechatronischer Systeme (Vol. 250, pp. 231–242). Paderborn. bibtex: '@inproceedings{Sondermann-Wölke_Geisler_Hirsch_Hemsel_2009, place={Paderborn}, series={HNI-Verlagsschriftenreihe}, title={Verlässlichkeit im aktiven selbstoptimierenden Spurführungsmodul eines schienengebundenen Fahrzeugs}, volume={250}, booktitle={Entwurf mechatronischer Systeme}, author={Sondermann-Wölke, Christoph and Geisler, Jens and Hirsch, Martin and Hemsel, Tobias}, editor={Gausemeier, Jürgen and Rammig, Franz Josef and Trächtler, AnsgerEditors}, year={2009}, pages={231–242}, collection={HNI-Verlagsschriftenreihe} }' chicago: Sondermann-Wölke, Christoph, Jens Geisler, Martin Hirsch, and Tobias Hemsel. “Verlässlichkeit Im Aktiven Selbstoptimierenden Spurführungsmodul Eines Schienengebundenen Fahrzeugs.” In Entwurf Mechatronischer Systeme, edited by Jürgen Gausemeier, Franz Josef Rammig, and Ansger Trächtler, 250:231–42. HNI-Verlagsschriftenreihe. Paderborn, 2009. ieee: C. Sondermann-Wölke, J. Geisler, M. Hirsch, and T. Hemsel, “Verlässlichkeit im aktiven selbstoptimierenden Spurführungsmodul eines schienengebundenen Fahrzeugs,” in Entwurf mechatronischer Systeme, 2009, vol. 250, pp. 231–242. mla: Sondermann-Wölke, Christoph, et al. “Verlässlichkeit Im Aktiven Selbstoptimierenden Spurführungsmodul Eines Schienengebundenen Fahrzeugs.” Entwurf Mechatronischer Systeme, edited by Jürgen Gausemeier et al., vol. 250, 2009, pp. 231–42. short: 'C. Sondermann-Wölke, J. Geisler, M. Hirsch, T. Hemsel, in: J. Gausemeier, F.J. Rammig, A. Trächtler (Eds.), Entwurf Mechatronischer Systeme, Paderborn, 2009, pp. 231–242.' date_created: 2019-05-13T09:17:07Z date_updated: 2022-01-06T07:04:19Z department: - _id: '151' editor: - first_name: Jürgen full_name: Gausemeier, Jürgen last_name: Gausemeier - first_name: Franz Josef full_name: Rammig, Franz Josef last_name: Rammig - first_name: Ansger full_name: Trächtler, Ansger last_name: Trächtler intvolume: ' 250' keyword: - Verlässigkeit language: - iso: eng page: 231 - 242 place: Paderborn publication: Entwurf mechatronischer Systeme series_title: HNI-Verlagsschriftenreihe status: public title: Verlässlichkeit im aktiven selbstoptimierenden Spurführungsmodul eines schienengebundenen Fahrzeugs type: conference user_id: '55222' volume: 250 year: '2009' ... --- _id: '9741' author: - first_name: Christoph full_name: Sondermann-Wölke, Christoph last_name: Sondermann-Wölke - first_name: Tobias full_name: Hesse, Tobias last_name: Hesse - first_name: Thomas full_name: Sattel, Thomas last_name: Sattel - first_name: Tobias full_name: Hemsel, Tobias id: '210' last_name: Hemsel citation: ama: 'Sondermann-Wölke C, Hesse T, Sattel T, Hemsel T. Menschliche Unzuverlässigkeit als Grundlage für den Entwurf von Kollisionsvermeidungssystemen. In: 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung Und Betrieb Zuverlässiger Produkte, Leonberg. Vol 2065. VDI-Berichte. Düsseldorf; 2009:335-340.' apa: Sondermann-Wölke, C., Hesse, T., Sattel, T., & Hemsel, T. (2009). Menschliche Unzuverlässigkeit als Grundlage für den Entwurf von Kollisionsvermeidungssystemen. In 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung und Betrieb zuverlässiger Produkte, Leonberg (Vol. 2065, pp. 335–340). Düsseldorf. bibtex: '@inproceedings{Sondermann-Wölke_Hesse_Sattel_Hemsel_2009, place={Düsseldorf}, series={VDI-Berichte}, title={Menschliche Unzuverlässigkeit als Grundlage für den Entwurf von Kollisionsvermeidungssystemen.}, volume={2065}, booktitle={24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung und Betrieb zuverlässiger Produkte, Leonberg}, author={Sondermann-Wölke, Christoph and Hesse, Tobias and Sattel, Thomas and Hemsel, Tobias}, year={2009}, pages={335–340}, collection={VDI-Berichte} }' chicago: Sondermann-Wölke, Christoph, Tobias Hesse, Thomas Sattel, and Tobias Hemsel. “Menschliche Unzuverlässigkeit Als Grundlage Für Den Entwurf von Kollisionsvermeidungssystemen.” In 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung Und Betrieb Zuverlässiger Produkte, Leonberg, 2065:335–40. VDI-Berichte. Düsseldorf, 2009. ieee: C. Sondermann-Wölke, T. Hesse, T. Sattel, and T. Hemsel, “Menschliche Unzuverlässigkeit als Grundlage für den Entwurf von Kollisionsvermeidungssystemen.,” in 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung und Betrieb zuverlässiger Produkte, Leonberg, 2009, vol. 2065, pp. 335–340. mla: Sondermann-Wölke, Christoph, et al. “Menschliche Unzuverlässigkeit Als Grundlage Für Den Entwurf von Kollisionsvermeidungssystemen.” 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung Und Betrieb Zuverlässiger Produkte, Leonberg, vol. 2065, 2009, pp. 335–40. short: 'C. Sondermann-Wölke, T. Hesse, T. Sattel, T. Hemsel, in: 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung Und Betrieb Zuverlässiger Produkte, Leonberg, Düsseldorf, 2009, pp. 335–340.' date_created: 2019-05-13T09:27:29Z date_updated: 2022-01-06T07:04:19Z department: - _id: '151' intvolume: ' 2065' language: - iso: eng page: 335 - 340 place: Düsseldorf publication: 24. Tagung Technische Zuverlässigkeit (TTZ 2009) - Entwicklung und Betrieb zuverlässiger Produkte, Leonberg series_title: VDI-Berichte status: public title: Menschliche Unzuverlässigkeit als Grundlage für den Entwurf von Kollisionsvermeidungssystemen. type: conference user_id: '55222' volume: 2065 year: '2009' ... --- _id: '9742' abstract: - lang: eng text: New mechatronic systems, called self-optimizing systems, are able to adapt their behavior according to environmental, user and system specific influences. Self-optimizing systems are complex and due to their non-deterministic behavior comprise hidden risks, which cannot be foreseen in the design phase of the system. Therefore, this paper presents modifications of the current condition monitoring policy, to be able to cope with this new kind of systems. Beside avoiding critical situations evoked by self-optimization, the proposed concept uses self-optimization to increase the dependability of the system. In this case, the concept is applied to the active guidance module of an innovative rail-bound vehicle. author: - first_name: Christoph full_name: Sondermann-Wölke, Christoph last_name: Sondermann-Wölke - first_name: Walter full_name: Sextro, Walter id: '21220' last_name: Sextro citation: ama: 'Sondermann-Wölke C, Sextro W. Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules. In: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World: ; 2009:15-20. doi:10.1109/ComputationWorld.2009.47' apa: Sondermann-Wölke, C., & Sextro, W. (2009). Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules. In Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World: (pp. 15–20). https://doi.org/10.1109/ComputationWorld.2009.47 bibtex: '@inproceedings{Sondermann-Wölke_Sextro_2009, title={Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules}, DOI={10.1109/ComputationWorld.2009.47}, booktitle={Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:}, author={Sondermann-Wölke, Christoph and Sextro, Walter}, year={2009}, pages={15–20} }' chicago: Sondermann-Wölke, Christoph, and Walter Sextro. “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules.” In Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 15–20, 2009. https://doi.org/10.1109/ComputationWorld.2009.47. ieee: C. Sondermann-Wölke and W. Sextro, “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules,” in Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 2009, pp. 15–20. mla: Sondermann-Wölke, Christoph, and Walter Sextro. “Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules.” Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 2009, pp. 15–20, doi:10.1109/ComputationWorld.2009.47. short: 'C. Sondermann-Wölke, W. Sextro, in: Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ’09. Computation World:, 2009, pp. 15–20.' date_created: 2019-05-13T09:31:52Z date_updated: 2022-01-06T07:04:19Z department: - _id: '151' doi: 10.1109/ComputationWorld.2009.47 keyword: - condition monitoring - mechatronic systems - rail bound vehicle - rail guidance module - self-optimization - self-optimizing function modules - condition monitoring - mechatronics - railway rolling stock - self-adjusting systems language: - iso: eng page: 15 -20 publication: 'Future Computing, Service Computation, Cognitive, Adaptive, Content, Patterns, 2009. COMPUTATIONWORLD ''09. Computation World:' status: public title: Towards the Integration of Condition Monitoring in Self-Optimizing Function Modules type: conference user_id: '55222' year: '2009' ... --- _id: '4152' abstract: - lang: eng text: A novel technique to form periodically nanostructured Si surface morphologies based on nanosphere lithography (NSL) and He ion implantation induced swelling is studied in detail. It is shown that by implantation of keV He ions through the nanometric openings of NSL masks regular arrays of hillocks and rings can be created on silicon surfaces. The shape and size of these surface features can be easily controlled by adjusting the ion dose and energy as well as the mask size. Feature heights of more than 100 nm can be obtained, while feature distances are typically 1.15 or 2 (hillock or ring) nanosphere radii, which are chosen to be between 100 and 500 nm in this study. Atomic force and scanning electron microscopy measurements of the surface morphology are supplemented by cross-sectional transmission electron microscopy, revealing the inner structure of hillocks to consist of a central cavity surrounded by a hierarchical arrangement of smaller voids. The surface morphologies developed here have the potential to be useful for fixing and separating nano-objects on a silicon surface. article_number: 1181-DD10-02 article_type: original author: - first_name: Frederic J.C. full_name: Fischer, Frederic J.C. last_name: Fischer - first_name: Michael full_name: Weinl, Michael last_name: Weinl - first_name: Jörg full_name: Lindner, Jörg id: '20797' last_name: Lindner - first_name: Bernd full_name: Stritzker, Bernd last_name: Stritzker citation: ama: Fischer FJC, Weinl M, Lindner J, Stritzker B. Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks. MRS Proceedings. 2009;1181. doi:10.1557/proc-1181-dd10-02 apa: Fischer, F. J. C., Weinl, M., Lindner, J., & Stritzker, B. (2009). Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks. MRS Proceedings, 1181. https://doi.org/10.1557/proc-1181-dd10-02 bibtex: '@article{Fischer_Weinl_Lindner_Stritzker_2009, title={Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks}, volume={1181}, DOI={10.1557/proc-1181-dd10-02}, number={1181-DD10-02}, journal={MRS Proceedings}, publisher={Cambridge University Press (CUP)}, author={Fischer, Frederic J.C. and Weinl, Michael and Lindner, Jörg and Stritzker, Bernd}, year={2009} }' chicago: Fischer, Frederic J.C., Michael Weinl, Jörg Lindner, and Bernd Stritzker. “Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks.” MRS Proceedings 1181 (2009). https://doi.org/10.1557/proc-1181-dd10-02. ieee: F. J. C. Fischer, M. Weinl, J. Lindner, and B. Stritzker, “Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks,” MRS Proceedings, vol. 1181, 2009. mla: Fischer, Frederic J. C., et al. “Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks.” MRS Proceedings, vol. 1181, 1181-DD10-02, Cambridge University Press (CUP), 2009, doi:10.1557/proc-1181-dd10-02. short: F.J.C. Fischer, M. Weinl, J. Lindner, B. Stritzker, MRS Proceedings 1181 (2009). conference: end_date: 2009-04-17 location: San Franicsco (USA) name: MRS Spring Meeting 2009 start_date: 2009-04-13 date_created: 2018-08-27T13:21:44Z date_updated: 2022-01-06T07:00:26Z department: - _id: '15' - _id: '286' doi: 10.1557/proc-1181-dd10-02 intvolume: ' 1181' language: - iso: eng publication: MRS Proceedings publication_identifier: issn: - 1946-4274 publication_status: published publisher: Cambridge University Press (CUP) status: public title: Nanoscale Surface Patterning of Silicon Using Local Swelling Induced by He Implantation through NSL-Masks type: journal_article user_id: '55706' volume: 1181 year: '2009' ... --- _id: '4180' abstract: - lang: eng text: We show that an optically driven carrier spin undergoes indirect dephasing even in the absence of spin-reservoir coupling and illustrate it for phonon-induced decoherence during optical spin rotation in a single quantum dot. article_number: NMA1 author: - first_name: Anna full_name: Grodecka, Anna last_name: Grodecka - first_name: Pawel full_name: Machnikowski, Pawel last_name: Machnikowski - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Grodecka A, Machnikowski P, Förstner J. Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot. In: Advances in Optical Sciences Congress. OSA Technical Digest (CD) (Optical Society of America, 2009); 2009. doi:10.1364/nlo.2009.nma1' apa: Grodecka, A., Machnikowski, P., & Förstner, J. (2009). Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot. In Advances in Optical Sciences Congress. OSA Technical Digest (CD) (Optical Society of America, 2009). https://doi.org/10.1364/nlo.2009.nma1 bibtex: '@inproceedings{Grodecka_Machnikowski_Förstner_2009, title={Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot}, DOI={10.1364/nlo.2009.nma1}, number={NMA1}, booktitle={Advances in Optical Sciences Congress}, publisher={OSA Technical Digest (CD) (Optical Society of America, 2009)}, author={Grodecka, Anna and Machnikowski, Pawel and Förstner, Jens}, year={2009} }' chicago: Grodecka, Anna, Pawel Machnikowski, and Jens Förstner. “Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot.” In Advances in Optical Sciences Congress. OSA Technical Digest (CD) (Optical Society of America, 2009), 2009. https://doi.org/10.1364/nlo.2009.nma1. ieee: A. Grodecka, P. Machnikowski, and J. Förstner, “Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot,” in Advances in Optical Sciences Congress, 2009. mla: Grodecka, Anna, et al. “Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot.” Advances in Optical Sciences Congress, NMA1, OSA Technical Digest (CD) (Optical Society of America, 2009), 2009, doi:10.1364/nlo.2009.nma1. short: 'A. Grodecka, P. Machnikowski, J. Förstner, in: Advances in Optical Sciences Congress, OSA Technical Digest (CD) (Optical Society of America, 2009), 2009.' date_created: 2018-08-28T09:22:42Z date_updated: 2022-01-06T07:00:30Z doi: 10.1364/nlo.2009.nma1 keyword: - tet_topic_qd language: - iso: eng publication: Advances in Optical Sciences Congress publication_identifier: isbn: - '9781557528735' publication_status: published publisher: OSA Technical Digest (CD) (Optical Society of America, 2009) status: public title: Indirect Dephasing Channel for Optically Controlled Spin in a Single Quantum Dot type: conference user_id: '55706' year: '2009' ... --- _id: '4182' abstract: - lang: eng text: "We demonstrate that an optically driven spin of a carrier in a quantum dot undergoes indirect dephasing via\r\nconditional optically induced charge evolution even in the absence of any direct interaction between the spin\r\nand its environment. A generic model for the indirect dephasing with a three-component system with spin,\r\ncharge, and reservoir is proposed. This indirect decoherence channel is studied for the optical spin manipulation\r\nin a quantum dot with a microscopic description of the charge-phonon interaction taking into account its\r\nnon-Markovian nature." article_number: '042331' article_type: original author: - first_name: A. full_name: Grodecka, A. last_name: Grodecka - first_name: P. full_name: Machnikowski, P. last_name: Machnikowski - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Grodecka A, Machnikowski P, Förstner J. Indirect spin dephasing via charge-state decoherence in optical control schemes in quantum dots. Physical Review A. 2009;79(4). doi:10.1103/physreva.79.042331 apa: Grodecka, A., Machnikowski, P., & Förstner, J. (2009). Indirect spin dephasing via charge-state decoherence in optical control schemes in quantum dots. Physical Review A, 79(4). https://doi.org/10.1103/physreva.79.042331 bibtex: '@article{Grodecka_Machnikowski_Förstner_2009, title={Indirect spin dephasing via charge-state decoherence in optical control schemes in quantum dots}, volume={79}, DOI={10.1103/physreva.79.042331}, number={4042331}, journal={Physical Review A}, publisher={American Physical Society (APS)}, author={Grodecka, A. and Machnikowski, P. and Förstner, Jens}, year={2009} }' chicago: Grodecka, A., P. Machnikowski, and Jens Förstner. “Indirect Spin Dephasing via Charge-State Decoherence in Optical Control Schemes in Quantum Dots.” Physical Review A 79, no. 4 (2009). https://doi.org/10.1103/physreva.79.042331. ieee: A. Grodecka, P. Machnikowski, and J. Förstner, “Indirect spin dephasing via charge-state decoherence in optical control schemes in quantum dots,” Physical Review A, vol. 79, no. 4, 2009. mla: Grodecka, A., et al. “Indirect Spin Dephasing via Charge-State Decoherence in Optical Control Schemes in Quantum Dots.” Physical Review A, vol. 79, no. 4, 042331, American Physical Society (APS), 2009, doi:10.1103/physreva.79.042331. short: A. Grodecka, P. Machnikowski, J. Förstner, Physical Review A 79 (2009). date_created: 2018-08-28T09:32:32Z date_updated: 2022-01-06T07:00:31Z ddc: - '530' department: - _id: '15' doi: 10.1103/physreva.79.042331 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-28T09:33:22Z date_updated: 2018-09-04T19:36:35Z file_id: '4183' file_name: 2009 Grodecka,Machnikowski,Förstner_Indirect spin dephasing via charge-state decoherence in optical control schemes in quantum dots.pdf file_size: 192120 relation: main_file file_date_updated: 2018-09-04T19:36:35Z has_accepted_license: '1' intvolume: ' 79' issue: '4' keyword: - tet_topic_qd language: - iso: eng oa: '1' publication: Physical Review A publication_identifier: issn: - 1050-2947 - 1094-1622 publication_status: published publisher: American Physical Society (APS) status: public title: Indirect spin dephasing via charge-state decoherence in optical control schemes in quantum dots type: journal_article urn: '41826' user_id: '158' volume: 79 year: '2009' ... --- _id: '4192' abstract: - lang: eng text: "Buried ion beam synthesized 3C-SiC layers were revealed to the surface of silicon wafers to provide lattice matched substrates for GaN thin film epitaxy. Both epitaxial SiC/Si(1 1 1) and SiC/Si(0 0 1) growth surfaces with either six- or four-fold crystal symmetry, respectively, were formed. GaN thin film growth was achieved by ion beam assisted molecular beam epitaxy (IBA–MBE) which – owing to the energy and momentum transfer of the ions – allows to deposit epitaxial thin films at particularly low growth temperatures where both the stable hexagonal and the metastable cubic polytype of GaN can be formed. It is shown by X-ray diffraction (XRD) and cross-sectional transmission electron microscopy (XTEM) that using appropriate fluxes of Ga atoms both purely hexagonal and purely cubic GaN films can\r\nbe grown epitaxially on SiC/Si(1 1 1) and SiC/Si(0 0 1), respectively. Thereby Ga rich growth conditions seem to stabilize the formation of the cubic polytype. It is obvious from XTEM studies that the high density of crystal defects in the SiC layer is not transferred onto the growing GaN films and that the crystalline quality of GaN films improves with increasing film thickness. The influence of surface roughness and wettability, interfacial cavities and the nucleation of twin-type defects at the GaN/SiC interface on the crystalline quality of the GaN thin films is discussed." article_type: original author: - first_name: M. full_name: Häberlen, M. last_name: Häberlen - first_name: J.W. full_name: Gerlach, J.W. last_name: Gerlach - first_name: B. full_name: Murphy, B. last_name: Murphy - first_name: Jörg full_name: Lindner, Jörg id: '20797' last_name: Lindner - first_name: B. full_name: Stritzker, B. last_name: Stritzker citation: ama: Häberlen M, Gerlach JW, Murphy B, Lindner J, Stritzker B. Structural characterization of cubic and hexagonal GaN thin films grown by IBA–MBE on SiC/Si. Journal of Crystal Growth. 2009;312(6):762-769. doi:10.1016/j.jcrysgro.2009.12.048 apa: Häberlen, M., Gerlach, J. W., Murphy, B., Lindner, J., & Stritzker, B. (2009). Structural characterization of cubic and hexagonal GaN thin films grown by IBA–MBE on SiC/Si. Journal of Crystal Growth, 312(6), 762–769. https://doi.org/10.1016/j.jcrysgro.2009.12.048 bibtex: '@article{Häberlen_Gerlach_Murphy_Lindner_Stritzker_2009, title={Structural characterization of cubic and hexagonal GaN thin films grown by IBA–MBE on SiC/Si}, volume={312}, DOI={10.1016/j.jcrysgro.2009.12.048}, number={6}, journal={Journal of Crystal Growth}, publisher={Elsevier BV}, author={Häberlen, M. and Gerlach, J.W. and Murphy, B. and Lindner, Jörg and Stritzker, B.}, year={2009}, pages={762–769} }' chicago: 'Häberlen, M., J.W. Gerlach, B. Murphy, Jörg Lindner, and B. Stritzker. “Structural Characterization of Cubic and Hexagonal GaN Thin Films Grown by IBA–MBE on SiC/Si.” Journal of Crystal Growth 312, no. 6 (2009): 762–69. https://doi.org/10.1016/j.jcrysgro.2009.12.048.' ieee: M. Häberlen, J. W. Gerlach, B. Murphy, J. Lindner, and B. Stritzker, “Structural characterization of cubic and hexagonal GaN thin films grown by IBA–MBE on SiC/Si,” Journal of Crystal Growth, vol. 312, no. 6, pp. 762–769, 2009. mla: Häberlen, M., et al. “Structural Characterization of Cubic and Hexagonal GaN Thin Films Grown by IBA–MBE on SiC/Si.” Journal of Crystal Growth, vol. 312, no. 6, Elsevier BV, 2009, pp. 762–69, doi:10.1016/j.jcrysgro.2009.12.048. short: M. Häberlen, J.W. Gerlach, B. Murphy, J. Lindner, B. Stritzker, Journal of Crystal Growth 312 (2009) 762–769. date_created: 2018-08-28T11:50:05Z date_updated: 2022-01-06T07:00:32Z ddc: - '530' department: - _id: '15' doi: 10.1016/j.jcrysgro.2009.12.048 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-28T11:50:45Z date_updated: 2018-08-28T11:50:45Z file_id: '4193' file_name: Structural Characterization of Cubic and Hexagonal GaN Thin Films Grown by IBA-MBE on SiC-Si.pdf file_size: 828431 relation: main_file success: 1 file_date_updated: 2018-08-28T11:50:45Z has_accepted_license: '1' intvolume: ' 312' issue: '6' language: - iso: eng page: 762-769 publication: Journal of Crystal Growth publication_identifier: issn: - 0022-0248 publication_status: published publisher: Elsevier BV status: public title: Structural characterization of cubic and hexagonal GaN thin films grown by IBA–MBE on SiC/Si type: journal_article user_id: '55706' volume: 312 year: '2009' ... --- _id: '4196' abstract: - lang: eng text: The growth of cubic group III-nitrides is a direct way to eliminate polarization effects, which inherently limit the fabrication of normally-off heterojunction field-effect transistors (HFETs) in GaN technology. HFET structures were fabricated of non-polar cubic AlGaN/GaN hetero layers grown by plasma assisted molecular beam epitaxy (MBE) on free standing 3C-SiC (001). The electrical insulation of 3C-SiC was realised by Ar+ implantation before c-AlGaN/GaN MBE. The structural properties of the epilayers were studied by highresolution x-ray diffraction (HRXRD). HFETs with normally off and normally-on characteristics were fabricated of cubic AlGaN/GaN. Capacitance-voltage (CV) characteristics of thegate contact were performed to detect the electron channel at the c-AlGaN/GaN hetero interface. article_type: original author: - first_name: Elena full_name: Tschumak, Elena last_name: Tschumak - first_name: Jörg full_name: Lindner, Jörg id: '20797' last_name: Lindner - first_name: M. full_name: Bürger, M. last_name: Bürger - first_name: K. full_name: Lischka, K. last_name: Lischka - first_name: H. full_name: Nagasawa, H. last_name: Nagasawa - first_name: M. full_name: Abe, M. last_name: Abe - first_name: Donald full_name: As, Donald last_name: As citation: ama: Tschumak E, Lindner J, Bürger M, et al. Non-polar cubic AlGaN/GaN HFETs grown by MBE on Ar+implanted 3C-SiC (001). physica status solidi (c). 2009;7(1):104-107. doi:10.1002/pssc.200982615 apa: Tschumak, E., Lindner, J., Bürger, M., Lischka, K., Nagasawa, H., Abe, M., & As, D. (2009). Non-polar cubic AlGaN/GaN HFETs grown by MBE on Ar+implanted 3C-SiC (001). Physica Status Solidi (C), 7(1), 104–107. https://doi.org/10.1002/pssc.200982615 bibtex: '@article{Tschumak_Lindner_Bürger_Lischka_Nagasawa_Abe_As_2009, title={Non-polar cubic AlGaN/GaN HFETs grown by MBE on Ar+implanted 3C-SiC (001)}, volume={7}, DOI={10.1002/pssc.200982615}, number={1}, journal={physica status solidi (c)}, publisher={Wiley}, author={Tschumak, Elena and Lindner, Jörg and Bürger, M. and Lischka, K. and Nagasawa, H. and Abe, M. and As, Donald}, year={2009}, pages={104–107} }' chicago: 'Tschumak, Elena, Jörg Lindner, M. Bürger, K. Lischka, H. Nagasawa, M. Abe, and Donald As. “Non-Polar Cubic AlGaN/GaN HFETs Grown by MBE on Ar+implanted 3C-SiC (001).” Physica Status Solidi (C) 7, no. 1 (2009): 104–7. https://doi.org/10.1002/pssc.200982615.' ieee: E. Tschumak et al., “Non-polar cubic AlGaN/GaN HFETs grown by MBE on Ar+implanted 3C-SiC (001),” physica status solidi (c), vol. 7, no. 1, pp. 104–107, 2009. mla: Tschumak, Elena, et al. “Non-Polar Cubic AlGaN/GaN HFETs Grown by MBE on Ar+implanted 3C-SiC (001).” Physica Status Solidi (C), vol. 7, no. 1, Wiley, 2009, pp. 104–07, doi:10.1002/pssc.200982615. short: E. Tschumak, J. Lindner, M. Bürger, K. Lischka, H. Nagasawa, M. Abe, D. As, Physica Status Solidi (C) 7 (2009) 104–107. date_created: 2018-08-28T12:15:20Z date_updated: 2022-01-06T07:00:33Z ddc: - '530' department: - _id: '15' - _id: '286' doi: 10.1002/pssc.200982615 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-28T12:16:11Z date_updated: 2018-08-28T12:16:11Z file_id: '4197' file_name: Nonpolar cubic AlGaN-GaN HFETs grown by MBE on Ar+ implanted 3C SiC (001).pdf file_size: 213837 relation: main_file success: 1 file_date_updated: 2018-08-28T12:16:11Z has_accepted_license: '1' intvolume: ' 7' issue: '1' language: - iso: eng page: 104-107 publication: physica status solidi (c) publication_identifier: issn: - 1862-6351 - 1610-1642 publication_status: published publisher: Wiley status: public title: Non-polar cubic AlGaN/GaN HFETs grown by MBE on Ar+implanted 3C-SiC (001) type: journal_article user_id: '55706' volume: 7 year: '2009' ... --- _id: '4198' abstract: - lang: eng text: Three-dimensional (3D) photonic crystal exhibit direction-selective transmission with respect to the center frequency of the stop gap. As a model system, the stop gap of a 3D fcc inverted-opal photonic crystal is studied in the microwave regime in detail using 3D polyamide models. The difference in the direction-selective transmittance between crystals grown in two different high symmetry directions is experimentally shown and compared to numerical simulations. article_type: original author: - first_name: J. full_name: Üpping, J. last_name: Üpping - first_name: P.T. full_name: Miclea, P.T. last_name: Miclea - first_name: R.B. full_name: Wehrspohn, R.B. last_name: Wehrspohn - first_name: T. full_name: Baumgarten, T. last_name: Baumgarten - first_name: Siegmund full_name: Greulich-Weber, Siegmund last_name: Greulich-Weber citation: ama: Üpping J, Miclea PT, Wehrspohn RB, Baumgarten T, Greulich-Weber S. Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime. Photonics and Nanostructures - Fundamentals and Applications. 2009;8(2):102-106. doi:10.1016/j.photonics.2009.11.002 apa: Üpping, J., Miclea, P. T., Wehrspohn, R. B., Baumgarten, T., & Greulich-Weber, S. (2009). Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime. Photonics and Nanostructures - Fundamentals and Applications, 8(2), 102–106. https://doi.org/10.1016/j.photonics.2009.11.002 bibtex: '@article{Üpping_Miclea_Wehrspohn_Baumgarten_Greulich-Weber_2009, title={Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime}, volume={8}, DOI={10.1016/j.photonics.2009.11.002}, number={2}, journal={Photonics and Nanostructures - Fundamentals and Applications}, publisher={Elsevier BV}, author={Üpping, J. and Miclea, P.T. and Wehrspohn, R.B. and Baumgarten, T. and Greulich-Weber, Siegmund}, year={2009}, pages={102–106} }' chicago: 'Üpping, J., P.T. Miclea, R.B. Wehrspohn, T. Baumgarten, and Siegmund Greulich-Weber. “Direction-Selective Optical Transmission of 3D Fcc Photonic Crystals in the Microwave Regime.” Photonics and Nanostructures - Fundamentals and Applications 8, no. 2 (2009): 102–6. https://doi.org/10.1016/j.photonics.2009.11.002.' ieee: J. Üpping, P. T. Miclea, R. B. Wehrspohn, T. Baumgarten, and S. Greulich-Weber, “Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime,” Photonics and Nanostructures - Fundamentals and Applications, vol. 8, no. 2, pp. 102–106, 2009. mla: Üpping, J., et al. “Direction-Selective Optical Transmission of 3D Fcc Photonic Crystals in the Microwave Regime.” Photonics and Nanostructures - Fundamentals and Applications, vol. 8, no. 2, Elsevier BV, 2009, pp. 102–06, doi:10.1016/j.photonics.2009.11.002. short: J. Üpping, P.T. Miclea, R.B. Wehrspohn, T. Baumgarten, S. Greulich-Weber, Photonics and Nanostructures - Fundamentals and Applications 8 (2009) 102–106. date_created: 2018-08-28T12:19:16Z date_updated: 2022-01-06T07:00:33Z ddc: - '530' department: - _id: '15' doi: 10.1016/j.photonics.2009.11.002 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-28T12:19:51Z date_updated: 2018-08-28T12:19:51Z file_id: '4199' file_name: Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime.pdf file_size: 310534 relation: main_file success: 1 file_date_updated: 2018-08-28T12:19:51Z has_accepted_license: '1' intvolume: ' 8' issue: '2' language: - iso: eng page: 102-106 publication: Photonics and Nanostructures - Fundamentals and Applications publication_identifier: issn: - 1569-4410 publication_status: published publisher: Elsevier BV status: public title: Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime type: journal_article user_id: '55706' volume: 8 year: '2009' ... --- _id: '4219' abstract: - lang: eng text: 'The solar cell concept presented here is based on 3C-SiC nano- or microwires and conju¬gated polymers. Therefore the silicon carbide wires are fabricated by a sol-gel route including a car-bothermal reduction step, allowing growth with predetermined uniform diameters between 0.1 and 2μm and lengths up to several centimetres. The design of our photovoltaic device is therein based on a p-i-n structure, well known e.g. from silicon photovoltaics, involving an intrinsic semiconduc¬tor as the central photoactive layer, sandwiched between two complementary doped wide-bandgap semiconductors giving the driving force for charge separation. In our case the 3C-SiC microwires act as the electron acceptor and simultaneously as carrier material for all involved components of the photovoltaic element. ' article_type: original author: - first_name: Siegmund full_name: Greulich-Weber, Siegmund last_name: Greulich-Weber - first_name: M. full_name: Zöller, M. last_name: Zöller - first_name: B. full_name: Friedel, B. last_name: Friedel citation: ama: Greulich-Weber S, Zöller M, Friedel B. Textile Solar Cells Based on SiC Microwires. Materials Science Forum. 2009;615-617:239-242. doi:10.4028/www.scientific.net/msf.615-617.239 apa: Greulich-Weber, S., Zöller, M., & Friedel, B. (2009). Textile Solar Cells Based on SiC Microwires. Materials Science Forum, 615617, 239–242. https://doi.org/10.4028/www.scientific.net/msf.615-617.239 bibtex: '@article{Greulich-Weber_Zöller_Friedel_2009, title={Textile Solar Cells Based on SiC Microwires}, volume={615–617}, DOI={10.4028/www.scientific.net/msf.615-617.239}, journal={Materials Science Forum}, publisher={Trans Tech Publications}, author={Greulich-Weber, Siegmund and Zöller, M. and Friedel, B.}, year={2009}, pages={239–242} }' chicago: 'Greulich-Weber, Siegmund, M. Zöller, and B. Friedel. “Textile Solar Cells Based on SiC Microwires.” Materials Science Forum 615–617 (2009): 239–42. https://doi.org/10.4028/www.scientific.net/msf.615-617.239.' ieee: S. Greulich-Weber, M. Zöller, and B. Friedel, “Textile Solar Cells Based on SiC Microwires,” Materials Science Forum, vol. 615–617, pp. 239–242, 2009. mla: Greulich-Weber, Siegmund, et al. “Textile Solar Cells Based on SiC Microwires.” Materials Science Forum, vol. 615–617, Trans Tech Publications, 2009, pp. 239–42, doi:10.4028/www.scientific.net/msf.615-617.239. short: S. Greulich-Weber, M. Zöller, B. Friedel, Materials Science Forum 615–617 (2009) 239–242. date_created: 2018-08-28T13:00:44Z date_updated: 2022-01-06T07:00:38Z department: - _id: '15' doi: 10.4028/www.scientific.net/msf.615-617.239 language: - iso: eng page: 239-242 publication: Materials Science Forum publication_identifier: issn: - 1662-9752 publication_status: published publisher: Trans Tech Publications status: public title: Textile Solar Cells Based on SiC Microwires type: journal_article user_id: '55706' volume: 615-617 year: '2009' ...