@article{13288,
  author       = {{Driben, R. and Konotop, V. V. and Meier, Torsten and Yulin, A. V.}},
  issn         = {{2045-2322}},
  journal      = {{Scientific Reports}},
  number       = {{1}},
  title        = {{{Bloch oscillations sustained by nonlinearity}}},
  doi          = {{10.1038/s41598-017-03400-w}},
  volume       = {{7}},
  year         = {{2017}},
}

@article{38522,
  abstract     = {{<jats:title>Zusammenfassung</jats:title><jats:p>Im Beitrag wird zunächst erläutert, wie sich Curriculumforschung und berufsbezogenes Lernen und Lehren im Bereich Deutsch als Fremdsprache seit den 1990er Jahren entwickelt haben, um in einem weiteren Schritt zu beschreiben, wie sich ein konkretes Unterrichtsprojekt in die DaF-Curriculumdiskussion eingliedert. Dabei wird vor allem auf die Frage eingegangen, ob die Forderung nach einer Berufsorientierung im universitären Fremdsprachenunterricht mit dem Unterrichtsprojekt umgesetzt wurde. Untersuchungsgegenstand ist eine im Jahr 2014 an der Germanistik der University of St Andrews (Schottland, GB) durchgeführte, benotete Projektarbeit, bei der Studierende des vierten und letzten Studienjahres Werbeclips drehen mussten.</jats:p>}},
  author       = {{Prikoszovits, Matthias}},
  issn         = {{2511-0853}},
  journal      = {{Informationen Deutsch als Fremdsprache}},
  keywords     = {{General Medicine}},
  number       = {{1}},
  pages        = {{85--100}},
  publisher    = {{Walter de Gruyter GmbH}},
  title        = {{{Ein universitäres DaF-Unterrichtsprojekt im Spiegel von Curriculumdiskussion und berufsbezogenem Fremdsprachenunterricht}}},
  doi          = {{10.1515/infodaf-2017-0003}},
  volume       = {{44}},
  year         = {{2017}},
}

@inproceedings{16066,
  author       = {{Ahlers, Dominik and Koppa, Peter and Hengsbach, Florian and Gloetter, P. and Altmann, A. and Schaper, Mirko and Tröster, Thomas}},
  booktitle    = {{Proceedings of the 28th Annual InternationalSolid Freeform Fabrication Symposium – An Additive Manufacturing Conference}},
  location     = {{Austin, Texas, USA}},
  title        = {{{Increasing process speed in the laser melting process of Ti6Al4V and the reduction of pores during hot isostatic pressing}}},
  year         = {{2017}},
}

@article{10023,
  abstract     = {{We perform a comprehensive theoretical study of the structural and electronic properties of potassium niobate (KNbO3) in the cubic, tetragonal, orthorhombic, monoclinic, and rhombohedral phase, based on density-functional theory. The influence of different parametrizations of the exchange-correlation functional on the investigated properties is analyzed in detail, and the results are compared to available experimental data. We argue that the PBEsol and AM05 generalized gradient approximations as well as the RTPSS meta-generalized gradient approximation yield consistently accurate structural data for both the external and internal degrees of freedom and are overall superior to the local-density approximation or other conventional generalized gradient approximations for the structural characterization of KNbO3. Band-structure calculations using a HSE-type hybrid functional further indicate significant near degeneracies of band-edge states in all phases which are expected to be relevant for the optical response of the material.}},
  author       = {{Schmidt, Falko and Landmann, Marc and Rauls, Eva and Argiolas, Nicola and Sanna, Simone and Schmidt, Wolf Gero and Schindlmayr, Arno}},
  issn         = {{1687-8442}},
  journal      = {{Advances in Materials Science and Engineering}},
  publisher    = {{Hindawi}},
  title        = {{{Consistent atomic geometries and electronic structure of five phases of potassium niobate from density-functional theory}}},
  doi          = {{10.1155/2017/3981317}},
  volume       = {{2017}},
  year         = {{2017}},
}

@article{10021,
  abstract     = {{The optical properties of pristine and titanium-doped LiNbO3 are modeled from first principles. The dielectric functions are calculated within time-dependent density-functional theory, and a model long-range contribution is employed for the exchange-correlation kernel in order to account for the electron-hole binding. Our study focuses on the influence of substitutional titanium atoms on lithium sites. We show that an increasing titanium concentration enhances the values of the refractive indices and the reflectivity.}},
  author       = {{Friedrich, Michael and Schmidt, Wolf Gero and Schindlmayr, Arno and Sanna, Simone}},
  issn         = {{2475-9953}},
  journal      = {{Physical Review Materials}},
  number       = {{3}},
  publisher    = {{American Physical Society}},
  title        = {{{Optical properties of titanium-doped lithium niobate from time-dependent density-functional theory}}},
  doi          = {{10.1103/PhysRevMaterials.1.034401}},
  volume       = {{1}},
  year         = {{2017}},
}

@article{13416,
  abstract     = {{The optical properties of congruent lithium niobate are analyzed from first principles. The dielectric function of the material is calculated within time-dependent density-functional theory. The effects of isolated intrinsic defects and defect pairs, including the NbLi4+ antisite and the NbLi4+−NbNb4+ pair, commonly addressed as a bound polaron and bipolaron, respectively, are discussed in detail. In addition, we present further possible realizations of polaronic and bipolaronic systems. The absorption feature around 1.64 eV, ascribed to small bound polarons [O. F. Schirmer et al., J. Phys.: Condens. Matter 21, 123201 (2009)], is nicely reproduced within these models. Among the investigated defects, we find that the presence of bipolarons at bound interstitial-vacancy pairs NbV−VLi can best explain the experimentally observed broad absorption band at 2.5 eV. Our results provide a microscopic model for the observed optical spectra and suggest that, besides NbLi antisites and Nb and Li vacancies, Nb interstitials are also formed in congruent lithium-niobate samples.}},
  author       = {{Friedrich, Michael and Schmidt, Wolf Gero and Schindlmayr, Arno and Sanna, Simone}},
  issn         = {{2475-9953}},
  journal      = {{Physical Review Materials}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  title        = {{{Polaron optical absorption in congruent lithium niobate from time-dependent density-functional theory}}},
  doi          = {{10.1103/PhysRevMaterials.1.054406}},
  volume       = {{1}},
  year         = {{2017}},
}

@article{13421,
  author       = {{Landmann, M. and Rauls, E. and Schmidt, Wolf Gero}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{15}},
  title        = {{{Understanding band alignments in semiconductor heterostructures: Composition dependence and type-I–type-II transition of natural band offsets in nonpolar zinc-blendeAlxGa1−xN/AlyGa1−yNcomposites}}},
  doi          = {{10.1103/physrevb.95.155310}},
  volume       = {{95}},
  year         = {{2017}},
}

@article{13414,
  author       = {{Riefer, A. and Schmidt, Wolf Gero}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{23}},
  title        = {{{Solving the Bethe-Salpeter equation for the second-harmonic generation in Zn chalcogenides}}},
  doi          = {{10.1103/physrevb.96.235206}},
  volume       = {{96}},
  year         = {{2017}},
}

@article{3435,
  abstract     = {{Semiconductor quantum dots are promising sources for polarization-entangled photons. As an alternative
to the usual cascaded biexciton-exciton emission, direct two-photon emission from the biexciton can be used.
With a high-quality optical resonator tuned to half the biexciton energy, a large proportion of the photons
can be steered into the two-photon emission channel. In this case the degree of polarization entanglement is
inherently insensitive to the exciton fine-structure splitting. In the present work we analyze the biexciton emission
with particular emphasis on the influence of coupling of the quantum-dot cavity system to its environment.
Especially for a high-quality cavity, the coupling to the surrounding semiconductormaterial can open up additional
phonon-assisted decay channels. Our analysis demonstrates that with the cavity tuned to half the biexciton energy,
the potentially detrimental influence of the phonons on the polarization entanglement is strongly suppressed—high
degrees of entanglement can still be achieved. We further discuss spectral properties and statistics of the emitted
twin photons.}},
  author       = {{Heinze, Dirk and Zrenner, Artur and Schumacher, Stefan}},
  issn         = {{1098-0121}},
  journal      = {{Physical Review B}},
  number       = {{24}},
  title        = {{{Polarization-entangled twin photons from two-photon quantum-dot emission}}},
  doi          = {{10.1103/PhysRevB.95.245306}},
  year         = {{2017}},
}

@article{7481,
  abstract     = {{The electronic band structures of hexagonal ZnO and cubic ZnS, ZnSe, and ZnTe compounds are determined within hybrid-density-functional theory and quasiparticle calculations. It is found that the band-edge energies calculated on the G0W0 (Zn chalcogenides) or GW (ZnO) level of theory agree well with experiment, while fully self-consistent QSGW calculations are required for the correct description of the Zn 3d bands. The quasiparticle band structures are used to calculate the linear response and second-harmonic-generation (SHG) spectra of the Zn–VI compounds. Excitonic effects in the optical absorption are accounted for within the Bethe–Salpeter approach. The calculated spectra are discussed in the context of previous experimental data and present SHG measurements for ZnO.}},
  author       = {{Riefer, Arthur and Weber, Nils and Mund, Johannes and Yakovlev, Dmitri R. and Bayer, Manfred and Schindlmayr, Arno and Meier, Cedrik and Schmidt, Wolf Gero}},
  issn         = {{1361-648X}},
  journal      = {{Journal of Physics: Condensed Matter}},
  number       = {{21}},
  publisher    = {{IOP Publishing}},
  title        = {{{Zn–VI quasiparticle gaps and optical spectra from many-body calculations}}},
  doi          = {{10.1088/1361-648x/aa6b2a}},
  volume       = {{29}},
  year         = {{2017}},
}

@article{13909,
  author       = {{Salewski, M. and Poltavtsev, S. V. and Yugova, I. A. and Karczewski, G. and Wiater, M. and Wojtowicz, T. and Yakovlev, D. R. and Akimov, I. A. and Meier, Torsten and Bayer, M.}},
  issn         = {{2160-3308}},
  journal      = {{Physical Review X}},
  number       = {{3}},
  title        = {{{High-Resolution Two-Dimensional Optical Spectroscopy of Electron Spins}}},
  doi          = {{10.1103/physrevx.7.031030}},
  volume       = {{7}},
  year         = {{2017}},
}

@article{7480,
  author       = {{Poltavtsev, S. V. and Kosarev, A. N. and Akimov, I. A. and Yakovlev, D. R. and Sadofev, S. and Puls, J. and Hoffmann, S. P. and Albert, M. and Meier, Cedrik and Meier, Torsten and Bayer, M.}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{3}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Time-resolved photon echoes from donor-bound excitons in ZnO epitaxial layers}}},
  doi          = {{10.1103/physrevb.96.035203}},
  volume       = {{96}},
  year         = {{2017}},
}

@article{13289,
  author       = {{Yulin, A. and Driben, R. and Meier, Torsten}},
  issn         = {{2469-9926}},
  journal      = {{Physical Review A}},
  number       = {{3}},
  title        = {{{Bloch oscillations and resonant radiation of light propagating in arrays of nonlinear fibers with high-order dispersion}}},
  doi          = {{10.1103/physreva.96.033827}},
  volume       = {{96}},
  year         = {{2017}},
}

@phdthesis{24774,
  abstract     = {{In dieser Arbeit wurde ein Prozessverständnis für das FDM-Verfahren hinsichtlich der Verarbeitung des Materials Ultem*9085 aufgebaut. Es wurde der Einfluss des Materials, des Prozesses und der Maschine auf die resultierende Bauteilqualität untersucht.
Die Materialqualität unterschiedlicher Chargen zeigt, dass Feuchtigkeit im Material die Strangablage beeinflusst. Die Analyse der Prozessparameter, die anhand der Kurzzeitfestigkeiten analysiert wurden, zeigt einen starken Einfluss der Aufbauorientierung. Mittels einer Parameteroptimierung können ferner gleiche Festigkeitswerte wie aus dem Spritzgießprozess erreicht werden. Bei der Untersuchung der Langzeitfestigkeiten wurde festgestellt, dass sich die Festigkeitswerte bei unterschiedlichen Umgebungsbedingungen nicht ändern. Die Untersuchung einiger Anlagenkomponenten auf die resultierende Oberflächengüte, Geometriegenauigkeit und Festigkeitseigenschaften kann den Einfluss von u. a. der Bauraum- sowie der Düsentemperaturen auf die Bauteilqualität zeigen. Zuletzt wurde die Möglichkeit einer Leichtbauanwendung anhand von Sandwich-Prüfkörpern untersucht. Hierbei beeinflussen sowohl die verfahrensunabhängige Mechanik als auch die verfahrensspezifischen Effekte die Festigkeitswerte.}},
  author       = {{Kloke, Agnes}},
  isbn         = {{978-3-8440-4489-8}},
  pages        = {{172}},
  publisher    = {{Shaker Verlag}},
  title        = {{{Untersuchung der Werkstoff-, Prozess- und Bauteileigenschaften beim Fused Deposition Modeling Verfahren}}},
  volume       = {{4}},
  year         = {{2016}},
}

@article{25308,
  author       = {{Ruediger, Arne A. and Bremser, Wolfgang and Strube, Oliver I.}},
  issn         = {{1547-0091}},
  journal      = {{Journal of Coatings Technology and Research}},
  pages        = {{597--611}},
  title        = {{{The enzyme-mediated autodeposition of casein: effect of enzyme immobilization on deposition of protein structures}}},
  doi          = {{10.1007/s11998-015-9757-1}},
  year         = {{2016}},
}

@article{25309,
  author       = {{Ruediger, Arne A. and Bremser, Wolfgang and Strube, Oliver I.}},
  issn         = {{1438-7492}},
  journal      = {{Macromolecular Materials and Engineering}},
  pages        = {{1181--1190}},
  title        = {{{Nanoscaled Biocoatings via Enzyme Mediated Autodeposition of Casein}}},
  doi          = {{10.1002/mame.201600034}},
  year         = {{2016}},
}

@article{25310,
  author       = {{Ruediger, Arne A. and Terborg, Elke and Bremser, Wolfgang and Strube, Oliver I.}},
  issn         = {{0300-9440}},
  journal      = {{Progress in Organic Coatings}},
  pages        = {{56--61}},
  title        = {{{Influences on the film thickness in the enzymatic autodeposition process of casein}}},
  doi          = {{10.1016/j.porgcoat.2016.02.002}},
  year         = {{2016}},
}

@article{25311,
  author       = {{Strube, Oliver I. and Büngeler, Anne and Bremser, Wolfgang}},
  issn         = {{1438-7492}},
  journal      = {{Macromolecular Materials and Engineering}},
  pages        = {{801--804}},
  title        = {{{Enzyme-Mediated In Situ Synthesis and Deposition of Nonaggregated Melanin Protoparticles}}},
  doi          = {{10.1002/mame.201500315}},
  year         = {{2016}},
}

@phdthesis{28225,
  author       = {{Brenner, Christian}},
  isbn         = {{978-3-942647-70-0}},
  publisher    = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}},
  title        = {{{Szenariobasierte Synthese verteilter mechatronischer Systeme}}},
  volume       = {{351}},
  year         = {{2016}},
}

@misc{28226,
  author       = {{Gausemeier, Jürgen}},
  isbn         = {{978-3-942647-79-3}},
  publisher    = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}},
  title        = {{{Vorausschau und Technologieplanung. 12. Symposium für Vorausschau und Technologieplanung, Heinz Nixdorf Institut, 8. und 9. Dezember 2016}}},
  volume       = {{360}},
  year         = {{2016}},
}