TY - GEN A1 - Kidron, Giora J. A1 - Fischer, Thomas A1 - Xiao, Bo T1 - The ambivalent effect of biocrusts on evaporation: Can the contradictory conclusions be explained? A review T2 - Geoderma Y1 - 2022 U6 - https://doi.org/10.1016/j.geoderma.2022.115805 SN - 1872-6259 VL - Vol. 416 ER - TY - GEN A1 - Kidron, Giora J. A1 - Lichner, Lubomir A1 - Fischer, Thomas A1 - Starinsky, Abraham A1 - Or, Dani T1 - Mechanisms for biocrust-modulated runoff generation – A review T2 - Earth-Science Reviews Y1 - 2022 UR - https://www.sciencedirect.com/science/article/abs/pii/S0012825222001842?via%3Dihub U6 - https://doi.org/10.1016/j.earscirev.2022.104100 SN - 0012-8252 SN - 1872-6828 VL - 231 SP - 1 EP - 22 ER - TY - GEN A1 - Macaulay, Peter J. R. A1 - Baraldsnes, Dziuginta A1 - Brett, Hannah A1 - Paljakka, Antonia A1 - Fischer, Saskia M. T1 - Parent-Teacher Collaborations in Preventing and Tackling Bullying and Cyberbullying: A Systematic Review T2 - 27th Workshop on Aggression 2023, London, 10TH - 11TH NOV Y1 - 2023 UR - https://www.workshoponaggression.com/about-7 U6 - https://doi.org/10.17605/OSF.IO/BNDHG ER - TY - GEN A1 - Krisponeit, Jon-Olaf A1 - Fischer, Simon A1 - Esser, Sven A1 - Moshnyaga, Vasily A1 - Schmidt, Thomas A1 - Piper, Louis F. J. A1 - Flege, Jan Ingo A1 - Falta, Jens T1 - The morphology of VO2/TiO2(001): terraces, facets, and cracks T2 - Scientific Reports N2 - Vanadium dioxide (VO2) features a pronounced, thermally-driven metal-to-insulator transition at 340 K. Employing epitaxial stress on rutile TiO2(001) substrates, the transition can be tuned to occur close to room temperature. Striving for applications in oxide-electronic devices, the lateral homogeneity of such samples must be considered as an important prerequisite for efforts towards miniaturization. Moreover, the preparation of smooth surfaces is crucial for vertically stacked devices and, hence, the design of functional interfaces. Here, the surface morphology of VO2/TiO2(001) films was analyzed by low-energy electron microscopy and diffraction as well as scanning probe microscopy. The formation of large terraces could be achieved under temperature-induced annealing, but also the occurrence of facets was observed and characterized. Further, we report on quasi-periodic arrangements of crack defects which evolve due to thermal stress under cooling. While these might impair some applicational endeavours, they may also present crystallographically well-oriented nano-templates of bulk-like properties for advanced approaches. KW - Vanadium dioxide (VO2) KW - rutile TiO2(001) KW - metal-to-insulator transition KW - morphology KW - crystallography KW - low-energy electron microscopy (LEEM) KW - low-energy electron diffraction (LEED) KW - scanning probe microscopy Y1 - 2020 U6 - https://doi.org/10.1038/s41598-020-78584-9 SN - 2045-2322 VL - 10 ER - TY - GEN A1 - Steuer, Oliver A1 - Schwarz, Daniel A1 - Oehme, Michael A1 - Schulze, J. A1 - Maczko, H. A1 - Kudrawiec, Robert A1 - Fischer, Inga Anita A1 - Heller, R. A1 - Hübner, R. A1 - Khan, M. M. A1 - Georgiev, Yordan M. A1 - Zhou, Shengqiang A1 - Helm, M. A1 - Prucnal, Slawomir T1 - Band-gap and strain engineering in GeSn alloys using post-growth pulsed laser melting T2 - Journal of Physics: Condensed Matter Y1 - 2022 U6 - https://doi.org/10.1088/1361-648X/aca3ea SN - 1361-648X VL - 35 IS - 5 ER - TY - GEN A1 - Wendav, Torsten A1 - Fischer, Inga Anita A1 - Virgilio, Michele A1 - Capellini, Giovanni A1 - Oliveira, F. A1 - Cerqueira, M. F. A1 - Benedetti, A. A1 - Chiussi, Stefano A1 - Zaumseil, Peter A1 - Schwartz, Bernhard A1 - Busch, Kurt A1 - Schulze, J. T1 - Photoluminescence from ultrathin Ge-rich multiple quantum wells observed up to room temperature: Experiments and modeling T2 - Physical Review B 94 Y1 - 2016 U6 - https://doi.org/10.1103/PhysRevB.94.245304 VL - 94 IS - 24 SP - 245304 ER - TY - GEN A1 - Elogail, Yasmine A1 - Berkmann, Fritz A1 - Clausen, Caterina J. A1 - Fischer, Inga Anita A1 - Hänel, Linda A. A1 - Schwarz, Daniel A1 - Schulze, Jörg T1 - Investigation of Ge-Based P-Channel Planar-Doped Barrier FETs integrated on Si T2 - Microelectronics Journal Y1 - 2022 U6 - https://doi.org/10.1016/j.mejo.2022.105404 SN - 1879-2391 VL - 123 ER - TY - GEN A1 - Fischer, Inga Anita A1 - Brehm, Moritz A1 - De Seta, Monica A1 - Isella, Giovanni A1 - Paul, Douglas J. A1 - Virgilio, Michele A1 - Capellini, Giovanni T1 - On-chip infrared photonics with Si-Ge-heterostructures: What is next? T2 - APL Photonics N2 - The integration of Ge on Si for photonics applications has reached a high level of maturity: Ge photodetectors are available on the Si platform in foundry processes, and Si/Ge heterostructure multiple quantum-well photodiodes are rapidly progressing toward applications in light modulation. These successes result from decades of development of high-quality material growth and integration, which, more recently, has sparked an increasingly broad field of photonic device research based on Si/Ge heterostructures that extends from quantum cascade lasers to sensors. Here, we highlight selected recent structure and device developments as well as possible future trends that are enabled by the maturity of the SiGe material platform KW - Heterostructures KW - Photodetectors KW - Photonics KW - Nanowires KW - Plasmonics KW - Epitaxy KW - Quantum wells KW - Lasers KW - Sensors KW - Electronic band structure Y1 - 2022 UR - https://aip.scitation.org/doi/10.1063/5.0078608 U6 - https://doi.org/10.1063/5.0078608 SN - 2378-0967 VL - 7 IS - 5 SP - 050901-1 EP - 050901-20 ER - TY - CHAP A1 - Fischer, J. A1 - Cunningham, Douglas W. A1 - Bartz, Dirk A1 - Wallraven, Christian A1 - Bülthoff, Heinrich H. A1 - Strasser, W. T1 - Measuring the Discernibility of Virtual Objects in Conventional and Stylized Augmented Reality Y1 - 2006 ER - TY - GEN A1 - Zhang, Tingyi A1 - Geyer, Thomas A1 - Silva, Charitha de A1 - Fischer, Jeoffrey A1 - Doolan, Con A1 - Moreau, Danielle J. T1 - Experimental Investigation of Tip Vortex Formation Noise Produced by Wall-Mounted Finite Airfoils T2 - Journal of Aerospace Engineering Y1 - 2021 UR - https://ascelibrary.org/doi/10.1061/%28ASCE%29AS.1943-5525.0001315 U6 - https://doi.org/10.1061/(ASCE)AS.1943-5525.0001315 SN - 1943-5525 VL - 34 IS - 6 ER - TY - GEN A1 - Fischer, Saskia M. A1 - Macaulay, Peter J. R. A1 - Bilz, Ludwig T1 - Broadening the contextual perspective on bullying: Direct and cross-level interaction effects between staff communication climate, classroom climate, and students’ bullying experiences T2 - 26th Workshop on Aggression. The Nature and Prevention of Political Violence. N2 - Research on the development of bullying is often based upon Bronfenbrenner’s socioecological model (Swearer & Hymel, 2015). Thus, various relevant contextual variables have been identified, including classroom climate and school climate (Thornberg et al., 2018; Zych et al., 2019). School climate has been defined in different ways, mostly including relationships between people in the school environment (Wang et al., 2016). Empirically, only the relationships between students (also summarised within the class as classroom climate) and between teachers and pupils are usually considered. However, teachers have been identified as particularly significant in the bullying process and as role models for students (Colpin et al., 2021). Because of this, it is assumed that relationships among teachers can also be significant risk factors for student bullying. In this study, we investigate communication climate among teachers as part of the school climate and its associations to student bullying. In addition, we follow Bronfenbrenner’s idea of interactions among contextual levels by considering both school climate and classroom climate and investigating moderation effects. Data was collected from more than 550 teachers and 2,000 students in 114 classes at 24 schools in Germany. The analyses involved three-level hierarchical binary regression analyses and cross-level interaction models. Findings suggest that staff communication climate is not associated directly with students’ experiences with bullying, but that the worse staff communication climate, the more students bully others in classrooms with high rates of rivalry (cross-level moderation). The associations will further be analysed under consideration of relevant control variables. Final results will be presented at the conference. The study broadens the contextual perspective on bullying by including more than one level at once and supports the importance of a whole-school perspective on bullying. Y1 - 2022 UR - http://www.woa.uni-jena.de/WoA2022-Program.pdf ER - TY - CHAP A1 - Wallraven, Christian A1 - Fischer, J. A1 - Cunningham, Douglas W. A1 - Bartz, Dirk A1 - Bülthoff, Heinrich H. T1 - The Evaluation of Stylized Facial Expressions T2 - Proceedings, Symposium on Applied Perception in Graphics and Visualization, APGV 2006, Boston, Massachusetts, July 28 - 29, 2006 Y1 - 2006 SN - 1-59593-429-4 SP - 85 EP - 92 PB - ACM Press CY - New York, NY ER - TY - GEN A1 - Zhang, Tingyi A1 - Moreau, Danielle J. A1 - Geyer, Thomas A1 - Fischer, Jeoffrey A1 - Doolan, Con T1 - Dataset on tip vortex formation noise produced by wall-mounted finite airfoils with sinusoidal and porous tip geometries T2 - Data in Brief Y1 - 2020 U6 - https://doi.org/10.1016/j.dib.2020.105471 SN - 2352-3409 VL - 30 ER - TY - GEN A1 - Zhang, Tingyi A1 - Moreau, Danielle J. A1 - Geyer, Thomas A1 - Fischer, Jeoffrey A1 - Doolan, Con T1 - Dataset on tip vortex formation noise produced by wall-mounted finite airfoils with flat and rounded tip geometries T2 - Data in Brief Y1 - 2020 U6 - https://doi.org/10.1016/j.dib.2019.105058 SN - 2352-3409 VL - 28 ER - TY - JOUR A1 - Wallraven, Christian A1 - Fischer, J. A1 - Cunningham, Douglas W. A1 - Bartz, Dirk A1 - Bülthoff, Heinrich H. T1 - The Evaluation of Real-World and Computer-Generated Stylized Facial Expressions Y1 - 2007 ER - TY - GEN A1 - Schlykow, Viktoria A1 - Manganelli, Constanza Lucia A1 - Römer, Friedhard A1 - Clausen, Caterina J. A1 - Augel, Lion A1 - Schulze, Jörg A1 - Katzer, Jens A1 - Schubert, Michael Andreas A1 - Witzigmann, Bernd A1 - Schroeder, Thomas A1 - Capellini, Giovanni A1 - Fischer, Inga Anita T1 - Ge(Sn) nano-island/Si heterostructure photodetectors with plasmonic antennas T2 - Nanotechnology Y1 - 2020 U6 - https://doi.org/10.1088/1361-6528/ab91ef SN - 1361-6528 VL - 31 IS - 34 ER - TY - GEN A1 - Fischer, Inga Anita A1 - Clausen, Caterina J. A1 - Schwarz, Daniel A1 - Zaumseil, Peter A1 - Capellini, Giovanni A1 - Virgilio, Michele A1 - da Silva Figueira, Maria Cecilia A1 - Birner, Stefan A1 - Koelling, Sebastian A1 - Koenraad, Paul M. A1 - Huang, Michael R. S. A1 - Koch, Christoph T. A1 - Wendav, Torsten A1 - Busch, Kurt A1 - Schulze, Jörg T1 - Composition analysis and transition energies of ultrathin Sn-rich GeSn quantum wells T2 - Physical Review Materials Y1 - 2020 U6 - https://doi.org/10.1103/PhysRevMaterials.4.024601 SN - 2475-9953 VL - 4 IS - 2 ER - TY - GEN A1 - Schlipf, Jon A1 - Tetzner, Henriette A1 - Spirito, Davide A1 - Manganelli, Constanza Lucia A1 - Capellini, Giovanni A1 - Huang, Michael R. S. A1 - Koch, Christoph T. A1 - Clausen, Caterina J. A1 - Elsayed, Ahmed A1 - Schulze, Jörg A1 - Fischer, Inga Anita T1 - Raman shifts in MBE‐grown SixGe1 − x − ySny alloys with large Si content T2 - Journal of Raman Spectroscopy Y1 - 2021 U6 - https://doi.org/10.1002/jrs.6098 SN - 1097-4555 ER - TY - GEN A1 - Tetzner, Henriette A1 - Seifert, W. A1 - Skibitzki, Oliver A1 - Yamamoto, Yuji A1 - Lisker, Marco A1 - Mirza, M. M. A1 - Fischer, Inga Anita A1 - Paul, Douglas J. A1 - De Seta, Monica A1 - Capellini, Giovanni T1 - Unintentional p-type conductivity in intrinsic Ge-rich SiGe/Ge heterostructures grown on Si(001) T2 - Applied Physics Letter Y1 - 2023 U6 - https://doi.org/10.1063/5.0152962 SN - 1077-3118 VL - 122 IS - 24 ER - TY - GEN A1 - Steuer, O. A1 - Liedke, Maciej O. A1 - Butterling, M. A1 - Schwarz, D. A1 - Schulze, J. A1 - Li, Z. A1 - Wagner, A. A1 - Fischer, Inga Anita A1 - Hübner, R. A1 - Zhou, S. T1 - Evolution of point defects in pulsed-laser-melted Ge1-xSnx probed by positron annihilation lifetime spectroscopy T2 - Journal of Physics: Condensed Matter N2 - Direct-band-gap Germanium-Tin alloys (Ge1-xSnx) with high carrier mobilities are promising materials for nano- and optoelectronics. The concentration of open volume defects in the alloy, such as Sn and Ge vacancies, influences the final device performance. In this article, we present an evaluation of the point defects in molecular-beam-epitaxy grown Ge1-xSnx films treated by post-growth nanosecond-range pulsed laser melting (PLM). Doppler broadening – variable energy positron annihilation spectroscopy and variable energy positron annihilation lifetime spectroscopy are used to investigate the defect nanostructure in the Ge1-xSnx films exposed to increasing laser energy density. The experimental results, supported with ATomic SUPerposition calculations, evidence that after PLM, the average size of the open volume defects increases, which represents a raise in concentration of vacancy agglomerations, but the overall defect density is reduced as a function of the PLM fluence. At the same time, the positron annihilation spectroscopy analysis provides information about dislocations and Ge vacancies decorated by Sn atoms. Moreover, it is shown that the PLM reduces the strain in the layer, while dislocations are responsible for trapping of Sn and formation of small Sn-rich-clusters. KW - GeSn KW - laser annealing KW - positron annihilation KW - PLM KW - point defects Y1 - 2023 UR - https://iopscience.iop.org/article/10.1088/1361-648X/ad0a10/meta U6 - https://doi.org/10.1088/1361-648X/ad0a10 SN - 0953-8984 VL - 36 IS - 8 SP - 1 EP - 11 ER -