@article{46135,
  author       = {{Schall, Johannes and Deconinck, Marielle and Bart, Nikolai and Florian, Matthias and Helversen, Martin and Dangel, Christian and Schmidt, Ronny and Bremer, Lucas and Bopp, Frederik and Hüllen, Isabell and Gies, Christopher and Reuter, Dirk and Wieck, Andreas D. and Rodt, Sven and Finley, Jonathan J. and Jahnke, Frank and Ludwig, Arne and Reitzenstein, Stephan}},
  issn         = {{2511-9044}},
  journal      = {{Advanced Quantum Technologies}},
  keywords     = {{Electrical and Electronic Engineering, Computational Theory and Mathematics, Condensed Matter Physics, Mathematical Physics, Nuclear and High Energy Physics, Electronic, Optical and Magnetic Materials, Statistical and Nonlinear Physics}},
  number       = {{6}},
  publisher    = {{Wiley}},
  title        = {{{Bright Electrically Controllable Quantum‐Dot‐Molecule Devices Fabricated by In Situ Electron‐Beam Lithography}}},
  doi          = {{10.1002/qute.202100002}},
  volume       = {{4}},
  year         = {{2021}},
}

@article{32240,
  abstract     = {{<p>The effect of traces of ethanol in supercritical carbon dioxide on the mixture's thermodynamic properties is studied by molecular simulations and Taylor dispersion measurements.</p>}},
  author       = {{Chatwell, René Spencer and Guevara-Carrion, Gabriela and Gaponenko, Yuri and Shevtsova, Valentina and Vrabec, Jadran}},
  issn         = {{1463-9076}},
  journal      = {{Physical Chemistry Chemical Physics}},
  keywords     = {{Physical and Theoretical Chemistry, General Physics and Astronomy}},
  number       = {{4}},
  pages        = {{3106--3115}},
  publisher    = {{Royal Society of Chemistry (RSC)}},
  title        = {{{Diffusion of the carbon dioxide–ethanol mixture in the extended critical region}}},
  doi          = {{10.1039/d0cp04985a}},
  volume       = {{23}},
  year         = {{2021}},
}

@article{41508,
  author       = {{Camberg, Alan Adam and Andreiev, Anatolii and Pramanik, Sudipta and Hoyer, Kay-Peter and Tröster, Thomas and Schaper, Mirko}},
  issn         = {{0921-5093}},
  journal      = {{Materials Science and Engineering: A}},
  keywords     = {{Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science}},
  publisher    = {{Elsevier BV}},
  title        = {{{Strength enhancement of AlMg sheet metal parts by rapid heating and subsequent cold die stamping of severely cold-rolled blanks}}},
  doi          = {{10.1016/j.msea.2021.142312}},
  volume       = {{831}},
  year         = {{2021}},
}

@article{29209,
  abstract     = {{We demonstrate an optical arbitrary waveform measurement (OAWM) system that exploits a bank of silicon photonic (SiP) frequency-tunable coupled-resonator optical waveguide (CROW) filters for gapless spectral slicing of broadband optical signals. The spectral slices are coherently detected using a frequency comb as a multi-wavelength local oscillator (LO) and stitched together by digital signal processing (DSP). For high-quality signal reconstruction, we have implemented a maximum-ratio combining (MRC) technique based on precise calibration of the complex-valued opto-electronic transfer functions of all detection paths. In a proof-of-concept experiment, we demonstrate the viability of the scheme by implementing a four-channel system that offers an overall detection bandwidth of 140 GHz. Exploiting a femtosecond laser with precisely known pulse shape for calibration along with dynamic amplitude and phase estimation, we reconstruct 100 GBd QPSK, 16QAM and 64QAM optical data signals. The reconstructed signals show improved quality compared to that obtained with a single high-speed intradyne receiver, while the electronic bandwidth requirements of the individual coherent receivers are greatly reduced.}},
  author       = {{Fang, Dengyang and Zazzi, Andrea and Müller, Juliana and Dray, Daniel and Fullner, Christoph and Marin-Palomo, Pablo and Tabatabaei Mashayekh, Alireza and Dipta Das, Arka and Weizel, Maxim and Gudyriev, Sergiy and Freude, Wolfgang and Randel, Sebastian and Scheytt, J. Christoph and Witzens, Jeremy and Koos, Christian}},
  issn         = {{0733-8724}},
  journal      = {{Journal of Lightwave Technology}},
  keywords     = {{Atomic and Molecular Physics, and Optics}},
  pages        = {{1--1}},
  publisher    = {{Institute of Electrical and Electronics Engineers (IEEE)}},
  title        = {{{Optical Arbitrary Waveform Measurement Using Silicon Photonic Slicing Filters}}},
  doi          = {{10.1109/jlt.2021.3130764}},
  year         = {{2021}},
}

@article{29747,
  author       = {{Jurgen von Bardeleben, Hans and Cantin, Jean-Louis and Gerstmann, Uwe and Schmidt, Wolf Gero and Biktagirov, Timur}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{Mechanical Engineering, Condensed Matter Physics, General Materials Science, General Chemistry, Bioengineering}},
  number       = {{19}},
  pages        = {{8119--8125}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Spin Polarization, Electron–Phonon Coupling, and Zero-Phonon Line of the NV Center in 3C-SiC}}},
  doi          = {{10.1021/acs.nanolett.1c02564}},
  volume       = {{21}},
  year         = {{2021}},
}

@article{40379,
  author       = {{Sukharnikov, Vladislav and Sharapova, Polina and Tikhonova, Olga}},
  issn         = {{0030-3992}},
  journal      = {{Optics &amp; Laser Technology}},
  keywords     = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}},
  publisher    = {{Elsevier BV}},
  title        = {{{Managing spectral properties and Schmidt mode content of squeezed vacuum light using sum-frequency converter}}},
  doi          = {{10.1016/j.optlastec.2020.106769}},
  volume       = {{136}},
  year         = {{2021}},
}

@article{32246,
  abstract     = {{<p>State-of-the-art methods in materials science such as artificial intelligence and data-driven techniques advance the investigation of photovoltaic materials.</p>}},
  author       = {{Mirhosseini, Hossein and Kormath Madam Raghupathy, Ramya and Sahoo, Sudhir K. and Wiebeler, Hendrik and Chugh, Manjusha and Kühne, Thomas D.}},
  issn         = {{1463-9076}},
  journal      = {{Physical Chemistry Chemical Physics}},
  keywords     = {{Physical and Theoretical Chemistry, General Physics and Astronomy}},
  number       = {{46}},
  pages        = {{26682--26701}},
  publisher    = {{Royal Society of Chemistry (RSC)}},
  title        = {{{<i>In silico</i> investigation of Cu(In,Ga)Se<sub>2</sub>-based solar cells}}},
  doi          = {{10.1039/d0cp04712k}},
  volume       = {{22}},
  year         = {{2020}},
}

@article{34301,
  abstract     = {{<p>
						<italic>Ab initio</italic> molecular dynamics simulations of ambient liquid water and energy decomposition analysis have recently shown that water molecules exhibit significant asymmetry between the strengths of the two donor and/or the two acceptor interactions.</p>}},
  author       = {{Elgabarty, Hossam and Kühne, Thomas}},
  issn         = {{1463-9076}},
  journal      = {{Physical Chemistry Chemical Physics}},
  keywords     = {{Physical and Theoretical Chemistry, General Physics and Astronomy}},
  number       = {{19}},
  pages        = {{10397--10411}},
  publisher    = {{Royal Society of Chemistry (RSC)}},
  title        = {{{Tumbling with a limp: local asymmetry in water's hydrogen bond network and its consequences}}},
  doi          = {{10.1039/c9cp06960g}},
  volume       = {{22}},
  year         = {{2020}},
}

@article{34643,
  author       = {{Liphardt, L. and Suematsu, K. and Grundmeier, Guido}},
  issn         = {{0360-3199}},
  journal      = {{International Journal of Hydrogen Energy}},
  keywords     = {{Energy Engineering and Power Technology, Condensed Matter Physics, Fuel Technology, Renewable Energy, Sustainability and the Environment}},
  number       = {{5}},
  pages        = {{4399--4406}},
  publisher    = {{Elsevier BV}},
  title        = {{{Kinetic studies of cathode degradation on PEM fuel cell short stack level undergoing freeze startups with different states of residual water and current draws}}},
  doi          = {{10.1016/j.ijhydene.2020.10.273}},
  volume       = {{46}},
  year         = {{2020}},
}

@article{31264,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Given a closed orientable hyperbolic manifold of dimension <jats:inline-formula><jats:alternatives><jats:tex-math>$$\ne 3$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
                  <mml:mrow>
                    <mml:mo>≠</mml:mo>
                    <mml:mn>3</mml:mn>
                  </mml:mrow>
                </mml:math></jats:alternatives></jats:inline-formula> we prove that the multiplicity of the Pollicott-Ruelle resonance of the geodesic flow on perpendicular one-forms at zero agrees with the first Betti number of the manifold. Additionally, we prove that this equality is stable under small perturbations of the Riemannian metric and simultaneous small perturbations of the geodesic vector field within the class of contact vector fields. For more general perturbations we get bounds on the multiplicity of the resonance zero on all one-forms in terms of the first and zeroth Betti numbers. Furthermore, we identify for hyperbolic manifolds further resonance spaces whose multiplicities are given by higher Betti numbers.
</jats:p>}},
  author       = {{Küster, Benjamin and Weich, Tobias}},
  issn         = {{0010-3616}},
  journal      = {{Communications in Mathematical Physics}},
  keywords     = {{Mathematical Physics, Statistical and Nonlinear Physics}},
  number       = {{2}},
  pages        = {{917--941}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Pollicott-Ruelle Resonant States and Betti Numbers}}},
  doi          = {{10.1007/s00220-020-03793-2}},
  volume       = {{378}},
  year         = {{2020}},
}

@article{33646,
  author       = {{Majumdar, I. and Sahoo, S.K. and Parvan, V. and Mirhosseini, Hossein and Chacko, B. and Wang, Y. and Greiner, D. and Kühne, Thomas and Schlatmann, R. and Lauermann, I.}},
  issn         = {{0169-4332}},
  journal      = {{Applied Surface Science}},
  keywords     = {{Surfaces, Coatings and Films, Condensed Matter Physics, Surfaces and Interfaces, General Physics and Astronomy, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Effects of KF and RbF treatments on Cu(In,Ga)Se2-based solar cells: A combined photoelectron spectroscopy and DFT study}}},
  doi          = {{10.1016/j.apsusc.2020.148085}},
  volume       = {{538}},
  year         = {{2020}},
}

@article{35723,
  abstract     = {{<jats:p>The development of renewable energies and smart mobility has profoundly impacted the future of the distribution grid. An increasing bidirectional energy flow stresses the assets of the distribution grid, especially medium voltage switchgear. This calls for improved maintenance strategies to prevent critical failures. Predictive maintenance, a maintenance strategy relying on current condition data of assets, serves as a guideline. Novel sensors covering thermal, mechanical, and partial discharge aspects of switchgear, enable continuous condition monitoring of some of the most critical assets of the distribution grid. Combined with machine learning algorithms, the demands put on the distribution grid by the energy and mobility revolutions can be handled. In this paper, we review the current state-of-the-art of all aspects of condition monitoring for medium voltage switchgear. Furthermore, we present an approach to develop a predictive maintenance system based on novel sensors and machine learning. We show how the existing medium voltage grid infrastructure can adapt these new needs on an economic scale.</jats:p>}},
  author       = {{Hoffmann, Martin W. and Wildermuth, Stephan and Gitzel, Ralf and Boyaci, Aydin and Gebhardt, Jörg and Kaul, Holger and Amihai, Ido and Forg, Bodo and Suriyah, Michael and Leibfried, Thomas and Stich, Volker and Hicking, Jan and Bremer, Martin and Kaminski, Lars and Beverungen, Daniel and zur Heiden, Philipp and Tornede, Tanja}},
  issn         = {{1424-8220}},
  journal      = {{Sensors}},
  keywords     = {{Electrical and Electronic Engineering, Biochemistry, Instrumentation, Atomic and Molecular Physics, and Optics, Analytical Chemistry}},
  number       = {{7}},
  publisher    = {{MDPI AG}},
  title        = {{{Integration of Novel Sensors and Machine Learning for Predictive Maintenance in Medium Voltage Switchgear to Enable the Energy and Mobility Revolutions}}},
  doi          = {{10.3390/s20072099}},
  volume       = {{20}},
  year         = {{2020}},
}

@article{34093,
  author       = {{Riedl, Thomas and Kunnathully, V. S. and Trapp, A. and Langer, T. and Reuter, Dirk and Lindner, Jörg}},
  issn         = {{2475-9953}},
  journal      = {{Physical Review Materials}},
  keywords     = {{Physics and Astronomy (miscellaneous), General Materials Science}},
  number       = {{1}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Strain-driven InAs island growth on top of GaAs(111) nanopillars}}},
  doi          = {{10.1103/physrevmaterials.4.014602}},
  volume       = {{4}},
  year         = {{2020}},
}

@article{34088,
  author       = {{Bürger, Julius and Riedl, Thomas and Lindner, Jörg}},
  issn         = {{0304-3991}},
  journal      = {{Ultramicroscopy}},
  keywords     = {{Instrumentation, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials}},
  publisher    = {{Elsevier BV}},
  title        = {{{Influence of lens aberrations, specimen thickness and tilt on differential phase contrast STEM images}}},
  doi          = {{10.1016/j.ultramic.2020.113118}},
  volume       = {{219}},
  year         = {{2020}},
}

@article{34091,
  author       = {{Kunnathully, Vinay S. and Riedl, Thomas and Trapp, Alexander and Langer, Timo and Reuter, Dirk and Lindner, Jörg}},
  issn         = {{0022-0248}},
  journal      = {{Journal of Crystal Growth}},
  keywords     = {{Materials Chemistry, Inorganic Chemistry, Condensed Matter Physics}},
  publisher    = {{Elsevier BV}},
  title        = {{{InAs heteroepitaxy on nanopillar-patterned GaAs (111)A}}},
  doi          = {{10.1016/j.jcrysgro.2020.125597}},
  volume       = {{537}},
  year         = {{2020}},
}

@article{34090,
  author       = {{Riedl, Thomas and Lindner, Jörg}},
  issn         = {{0038-1098}},
  journal      = {{Solid State Communications}},
  keywords     = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
  doi          = {{10.1016/j.ssc.2020.113927}},
  volume       = {{314-315}},
  year         = {{2020}},
}

@article{34089,
  author       = {{Riedl, Thomas and Lindner, Jörg}},
  issn         = {{0038-1098}},
  journal      = {{Solid State Communications}},
  keywords     = {{Materials Chemistry, Condensed Matter Physics, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Applicability of molecular statics simulation to partial dislocations in GaAs}}},
  doi          = {{10.1016/j.ssc.2020.113927}},
  volume       = {{314-315}},
  year         = {{2020}},
}

@article{47958,
  abstract     = {{High-fidelity periodic poling over long lengths is required for robust, quasi-phase-matched second-harmonic generation using the fundamental, quasi-TE polarized waveguide modes in a thin-film lithium niobate (TFLN) waveguide. Here, a shallow-etched ridge waveguide is fabricated in x-cut magnesium oxide doped TFLN and is poled accurately over 5 mm. The high fidelity of the poling is demonstrated over long lengths using a non-destructive technique of confocal scanning second-harmonic microscopy. We report a second-harmonic conversion efficiency of up to 939 %/W (length-normalized conversion efficiency 3757 %/Wcm²), measured at telecommunications wavelengths. The device demonstrates a narrow spectral linewidth (1 nm) and can be tuned precisely with a tuning characteristic of 0.1 nm/°C, over at least 40 °C without measurable loss of efficiency.}},
  author       = {{Zhao, Jie and Rüsing, Michael and Javid, Usman A. and Ling, Jingwei and Li, Mingxiao and Lin, Qiang and Mookherjea, Shayan}},
  issn         = {{1094-4087}},
  journal      = {{Optics Express}},
  keywords     = {{Atomic and Molecular Physics, and Optics}},
  number       = {{13}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Shallow-etched thin-film lithium niobate waveguides for highly-efficient second-harmonic generation}}},
  doi          = {{10.1364/oe.395545}},
  volume       = {{28}},
  year         = {{2020}},
}

@article{47955,
  abstract     = {{Quasi-phase-matched grating structures in lithium niobate waveguides with sub-micrometer periodicities will benefit the development of short-wavelength nonlinear optical devices. Here, we report on the reproducible formation of periodically poled domains in x-cut single-crystalline thin-film lithium niobate with periodicities as short as 600 nm. Shaped single-voltage poling pulses were applied to electrode structures that were fabricated by a combination of electron-beam and direct-writing laser lithography. Evidence of successful poling with good quality was obtained through second-harmonic microscopy and piezoresponse force microscopy imaging. For the sub-micrometer period structures, we observed patterns with a double periodicity formed by domain interactions and features with sizes <200 nm.}},
  author       = {{Zhao, Jie and Rüsing, Michael and Roeper, Matthias and Eng, Lukas M. and Mookherjea, Shayan}},
  issn         = {{0021-8979}},
  journal      = {{Journal of Applied Physics}},
  keywords     = {{General Physics and Astronomy}},
  number       = {{19}},
  publisher    = {{AIP Publishing}},
  title        = {{{Poling thin-film x-cut lithium niobate for quasi-phase matching with sub-micrometer periodicity}}},
  doi          = {{10.1063/1.5143266}},
  volume       = {{127}},
  year         = {{2020}},
}

@article{47952,
  author       = {{Zhao, Jie and Ma, Chaoxuan and Rüsing, Michael and Mookherjea, Shayan}},
  issn         = {{0031-9007}},
  journal      = {{Physical Review Letters}},
  keywords     = {{General Physics and Astronomy}},
  number       = {{16}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{High Quality Entangled Photon Pair Generation in Periodically Poled Thin-Film Lithium Niobate Waveguides}}},
  doi          = {{10.1103/physrevlett.124.163603}},
  volume       = {{124}},
  year         = {{2020}},
}