@article{64386, author = {{Lenz, Marcel and Gerhardt, Nils Christopher and Hofmann, Martin and Mazzon, Cristian and Dillmann, Christopher and Welp, Hubert and Prange, Michael}}, journal = {{Applied Sciences}}, number = {{4}}, title = {{{Spectral domain optical coherence tomography for non-destructive testing of protection coatings on metal substrates}}}, doi = {{10.3390/app7040364}}, volume = {{7}}, year = {{2017}}, } @article{64385, author = {{Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin R. and Pusch, Tobias and Michalzik, Rainer and La Tona, Eros}}, journal = {{Applied physics letters}}, number = {{15}}, title = {{{Monolithic vertical-cavity surface-emitting laser with thermally tunable birefringence}}}, doi = {{10.1063/1.4980025}}, volume = {{110}}, year = {{2017}}, } @inproceedings{64393, author = {{Cherkashin, Maxim N. and Brenner, Carsten and Putro, Widodo Dwi and Döpke, Benjamin and Gerhardt, Nils Christopher and Hofmann, Martin R.}}, booktitle = {{Photons Plus Ultrasound: Imaging and Sensing 2017}}, title = {{{Dynamics of the photoacoustic response of single-element PZT transducers to pulse burst excitation}}}, doi = {{10.1117/12.2253051}}, year = {{2017}}, } @article{64384, author = {{Finkeldey, Markus and Göring, Lena and Brenner, Carsten and Hofmann, Martin and Gerhardt, Nils Christopher}}, journal = {{Optics express}}, number = {{16}}, pages = {{19398 -- 19407}}, title = {{{Depth-filtering in common-path digital holographic microscopy}}}, doi = {{10.1364/oe.25.019398}}, volume = {{25}}, year = {{2017}}, } @inproceedings{64388, author = {{Finkeldey, Markus and Schellenberg, Falk and Gerhardt, Nils Christopher and Hofmann, Martin and Göring, Lena}}, booktitle = {{Practical holography XXXI: Materials and Applications}}, title = {{{Backside imaging of a microcontroller with common-path digital holography}}}, doi = {{10.1117/12.2250903}}, year = {{2017}}, } @inproceedings{64395, author = {{Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin R. and Pusch, Tobias and Michalzik, Rainer}}, booktitle = {{Vertical-Cavity Surface-Emitting Lasers XXI}}, title = {{{Investigations on polarization oscillation amplitudes in spin-VCSELs}}}, doi = {{10.1117/12.2252490}}, year = {{2017}}, } @inproceedings{64391, author = {{Besaga, Vira and Gerhardt, Nils Christopher and Hofmann, Martin R. and Maksimyak, Peter P.}}, booktitle = {{Novel Optical Systems Design and Optimization XX}}, title = {{{Common-path holographic objective for conventional photographic camera}}}, doi = {{10.1117/12.2273890}}, year = {{2017}}, } @inproceedings{64394, author = {{Lindemann, Markus and Hofmann, Martin R. and Gerhardt, Nils Christopher and Pusch, Tobias and Michalzik, Rainer}}, booktitle = {{Spintronics X}}, title = {{{High-frequency polarization dynamics in spin-lasers - pushing the limits}}}, doi = {{10.1117/12.2272972}}, year = {{2017}}, } @article{64403, author = {{Lindemann, Markus and Gerhardt, Nils Christopher and Hofmann, Martin R. and Pusch, Tobias and La Tona, Eros and Michalzik, Rainer}}, journal = {{2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC 2017)}}, pages = {{108}}, title = {{{Thermally induced birefringence tuning of 37 GHz in VCSELs}}}, doi = {{10.1109/cleoe-eqec.2017.8086349}}, volume = {{1}}, year = {{2017}}, } @article{64392, author = {{Finkeldey, Markus and Brenner, Carsten and Gerhardt, Nils Christopher and Hofmann, Martin R. and Göring, Lena}}, journal = {{DGaO-Proceedings}}, title = {{{Digital holographic microscopy of buried specimen using a common-path reflective setup}}}, volume = {{118}}, year = {{2017}}, } @inbook{64768, author = {{Nikitin, Natalie}}, booktitle = {{50th Seminar “Sophus Lie”, Będlewo, Poland, September 26 – October 1, 2016. Dedicated to Professor Karl Heinrich Hofmann on the occasion of his 85th birthday}}, isbn = {{978-83-86806-37-9}}, keywords = {{22E65, 22A10, 26E15, 46E50}}, pages = {{363–373}}, publisher = {{Warsaw: Polish Academy of Sciences, Institute of Mathematics}}, title = {{{Differentiability along one-parameter subgroups compared to differentiability on Lie groups as manifolds}}}, doi = {{10.4064/bc113-0-17}}, year = {{2017}}, } @article{64635, author = {{Glöckner, Helge and Neeb, Karl-Hermann}}, issn = {{0019-3577}}, journal = {{Indagationes Mathematicae}}, keywords = {{58D05, 22E55, 52A20}}, number = {{4}}, pages = {{760–783}}, title = {{{Diffeomorphism groups of compact convex sets}}}, doi = {{10.1016/j.indag.2017.04.004}}, volume = {{28}}, year = {{2017}}, } @article{64638, author = {{Glöckner, Helge and Raja, C. R. E.}}, issn = {{1433-5883}}, journal = {{Journal of Group Theory}}, keywords = {{22D05, 22A10, 22D40}}, number = {{3}}, pages = {{589–619}}, title = {{{Expansive automorphisms of totally disconnected, locally compact groups}}}, doi = {{10.1515/jgth-2016-0051}}, volume = {{20}}, year = {{2017}}, } @article{64636, author = {{Glöckner, Helge}}, issn = {{0002-9939}}, journal = {{Proceedings of the American Mathematical Society}}, keywords = {{22E20}}, number = {{11}}, pages = {{5007–5021}}, title = {{{Elementary p-adic Lie groups have finite construction rank}}}, doi = {{10.1090/proc/13637}}, volume = {{145}}, year = {{2017}}, } @article{64634, author = {{Glöckner, Helge}}, issn = {{0166-8641}}, journal = {{Topology and its Applications}}, keywords = {{22E65, 22A05, 46A13, 46M40, 58D05}}, pages = {{277–284}}, title = {{{Completeness of locally k_ω-groups and related infinite-dimensional Lie groups}}}, doi = {{10.1016/j.topol.2017.05.007}}, volume = {{228}}, year = {{2017}}, } @inbook{57234, author = {{Meise, Bianca and Schloots, Franziska Margarete and Müller-Lietzkow, Jörg and Meister, Dorothee M.}}, booktitle = {{Interdisziplinäre Perspektiven zur Zukunft der Wertschöpfung}}, isbn = {{9783658202644}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Interdisziplinäres Projektmanagement – Strategische Handlungsempfehlungen für Kooperationsverbünde in akademischen Kontexten}}}, doi = {{10.1007/978-3-658-20265-1_18}}, year = {{2017}}, } @inproceedings{24219, abstract = {{In this paper we present theoretical, simulated and measured data for a reader to tag communication RFID system at 5.8 GHz. First a theoretical link budget analysis for a reader to tag architecture is shown for a wireless industrial application at 1m distance. This includes a power budget of the passively powered transponder. The received power level of the backscattered data for the theoretical link budget is -52:5 dBm. For the first setup slot antennas are developed and measured in the anechoic chamber. The measured gain is 4.0 dB. The power of the backscatter data in setup 1 is -74:8 dBm. This corresponds to the theoretical link budget since, all losses such as cable or lower antenna gain are taken into account. Setup 2 is upgraded on the reader side with horn antennas. At 5.8 GHz, the gain reaches the value of 10.8 dB. The second setup shows improvement in the receiving backscattered power to a value of -62:4 dBm. Furthermore, as a solution to detect those transponders not presented in the main slope of the antenna, a steerable beam is introduced by means of a Rotman lens. On the topic of the passive transponder, different harvesting topologies at 5.8 GHz are investigated, and the efficiency simulation of the harvesting circuitry has been performed. The simulated efficiency of the implemented technique is 68 %.}}, author = {{Kuhn, Peter and Haddadian, Sanaz and Meyer, Frederic and Hoffmann, Marc and Grabmaier, Anton and Scheytt, Christoph and Kaiser, Thomas}}, booktitle = {{Smart SysTech 2017; European Conference on Smart Objects, Systems and Technologies}}, isbn = {{978-3-8007-4428-2}}, publisher = {{VDE ITG}}, title = {{{SHF RFID System for Automatic Process Optimization with Intelligent Tools}}}, year = {{2017}}, } @inproceedings{24222, abstract = {{This paper focuses on the design of a high efficiency cross-connected differential drive rectifier for next-generation passive RFID tags. To provide a realistic estimation of the transponders’power and efficiency requirements at 5.8 GHz, detailed link/power-budget analysis for various blocks of the tag chip is carried out. From link budget analysis realistic RF power levels are obtained and a rectifier with high conversion efficiency at low power levels is designed. Simulations based on a commercial 65nm CMOS technology investigate the suitability of the harvesting circuit for 5.8 GHz RFID tags.}}, author = {{Haddadian, Sanaz and Scheytt, Christoph and Kramer, Roland}}, booktitle = {{ANALOG 2017; 16th ITG/GMM-Symposium}}, pages = {{18}}, publisher = {{Technische Universität Berlin}}, title = {{{Energy Harvesting Analysis for Next Generation Passive RFID Tags}}}, year = {{2017}}, } @inproceedings{58667, abstract = {{In this work, an innovative approach for the design and structuring of teaching videos systematically using 3D animations is presented. The approach focuses on the quantitative description of electromagnetic fields and the mathematical methods and competencies required for this purpose, exemplarily with regard to an undergraduate electrical engineering course during the initial phase of corresponding degree programs. An essential part of this course is the spatial and time-dependent description of electromagnetic fields. For this purpose, students have to work with multiple integrals in 3D space and in different coordinate systems. Such subjects are typically covered only later in mathematics courses and without a technical context, therefore leading to major difficulties for many students. The videos presented in this work are intended to support students and lecturers to work with these subjects in an instructive fashion. The 3D animations allow for effectively clarifying complex connections between technical and mathematical aspects. The videos and their specific design are discussed with regard to didactic and technical considerations. Additionally, their integration with existing interventions for the course is described.}}, author = {{Hennig, Markus and Mertsching, Bärbel}}, booktitle = {{Proceedings of the 3rd International Conference on Higher Education Advances (HEAd’17)}}, publisher = {{Universitat Politècnica València}}, title = {{{Innovative 3D Animations for Teaching Electromagnetic Field Theory and its Mathematics in Undergraduate Engineering}}}, doi = {{10.4995/head17.2017.5327}}, year = {{2017}}, } @inproceedings{25068, author = {{Adelt, Peer and Koppelmann, Bastian and Müller, Wolfgang and Kleinjohann, Bernd and Scheytt, J. Christoph}}, booktitle = {{Design Automation and Testing in Europe (DATE)}}, location = {{Lausanne, CH, Mrz. 2017}}, title = {{{ANALISA - A Tool for Static Instruction Set Analysis}}}, year = {{2017}}, }