@article{40273, author = {{Meyer-Scott, Evan and Prasannan, Nidhin and Dhand, Ish and Eigner, Christof and Quiring, Viktor and Barkhofen, Sonja and Brecht, Benjamin and Plenio, Martin B. and Silberhorn, Christine}}, issn = {{0031-9007}}, journal = {{Physical Review Letters}}, keywords = {{General Physics and Astronomy}}, number = {{15}}, publisher = {{American Physical Society (APS)}}, title = {{{Scalable Generation of Multiphoton Entangled States by Active Feed-Forward and Multiplexing}}}, doi = {{10.1103/physrevlett.129.150501}}, volume = {{129}}, year = {{2022}}, } @article{36425, author = {{Dogan, Deniz and Ruthmann, Simon and Seewald, Oliver and Bremser, Wolfgang}}, issn = {{0300-9440}}, journal = {{Progress in Organic Coatings}}, keywords = {{Materials Chemistry, Organic Chemistry, Surfaces, Coatings and Films, General Chemical Engineering}}, publisher = {{Elsevier BV}}, title = {{{Tuning of antifouling active PDMS domains tethered to epoxy/amine surface}}}, doi = {{10.1016/j.porgcoat.2022.106977}}, volume = {{170}}, year = {{2022}}, } @article{41649, author = {{Büngeler, Anne and Kollmann, Fabian and Huber, Klaus and Strube, Oliver I.}}, issn = {{1525-7797}}, journal = {{Biomacromolecules}}, keywords = {{Materials Chemistry, Polymers and Plastics, Biomaterials, Bioengineering}}, number = {{3}}, pages = {{1020--1029}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Targeted Synthesis of the Type-A Particle Substructure from Enzymatically Produced Eumelanin}}}, doi = {{10.1021/acs.biomac.1c01390}}, volume = {{23}}, year = {{2022}}, } @inproceedings{35271, author = {{Weiß, Deborah and Schramm, Britta}}, booktitle = {{Procedia Structural Integrity}}, issn = {{2452-3216}}, keywords = {{General Engineering, Energy Engineering and Power Technology}}, location = {{Madeira}}, pages = {{879--885}}, publisher = {{Elsevier BV}}, title = {{{Fracture mechanical investigation of preformed metal sheets using a novel CC-specimen}}}, doi = {{10.1016/j.prostr.2022.12.111}}, volume = {{42}}, year = {{2022}}, } @article{41906, abstract = {{Abstract Background Due to the steadily increasing life expectancy of the population, the need for medical aids to maintain the previous quality of life is growing. The basis for independent mobility is a functional locomotor system. The hip joint can be so badly damaged by everyday wear or accelerated by illness that reconstruction by means of endoprostheses is necessary. Results In order to ensure a high quality of life for the patient after this procedure as well as a long service life of the prosthesis, a high-quality design is required, so that many different aspects have to be taken into account when developing prostheses. Long-term medical studies show that the service life and operational safety of a hip prosthesis by best possible adaptation of the stiffness to that of the bone can be increased. The use of additive manufacturing processes enables to specifically change the stiffness of implant structures. Conclusions Reduced implant stiffness leads to an increase in stress in the surrounding bone and thus to a reduction in bone resorption. Numerical methods are used to demonstrate this fact in the hip implant developed. The safety of use is nevertheless ensured by evaluating and taking into account the stresses that occur for critical load cases. These results are a promising basis to enable longer service life of prostheses in the future. }}, author = {{Risse, Lena and Woodcock, Steven Clifford and Brüggemann, Jan-Peter and Kullmer, Gunter and Richard, Hans Albert}}, issn = {{1475-925X}}, journal = {{BioMedical Engineering OnLine}}, keywords = {{Radiology, Nuclear Medicine and imaging, Biomedical Engineering, General Medicine, Biomaterials, Radiological and Ultrasound Technology}}, number = {{1}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Stiffness optimization and reliable design of a hip implant by using the potential of additive manufacturing processes}}}, doi = {{10.1186/s12938-022-00990-z}}, volume = {{21}}, year = {{2022}}, } @article{32492, author = {{Lau, S. and Gonchikzhapov, M. and Paletsky, A. and Shmakov, A. and Korobeinichev, O. and Kasper, Tina and Atakan, B.}}, issn = {{0010-2180}}, journal = {{Combustion and Flame}}, keywords = {{General Physics and Astronomy, Energy Engineering and Power Technology, Fuel Technology, General Chemical Engineering, General Chemistry}}, publisher = {{Elsevier BV}}, title = {{{Aluminum Diethylphosphinate as a Flame Retardant for Polyethylene: Investigation of the Pyrolysis and Combustion Behavior of PE/AlPi-Mixtures}}}, doi = {{10.1016/j.combustflame.2022.112006}}, volume = {{240}}, year = {{2022}}, } @article{34700, author = {{Gharibian, Sevag and Santha, Miklos and Sikora, Jamie and Sundaram, Aarthi and Yirka, Justin}}, issn = {{1016-3328}}, journal = {{Computational Complexity}}, keywords = {{Computational Mathematics, Computational Theory and Mathematics, General Mathematics, Theoretical Computer Science}}, number = {{2}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Quantum generalizations of the polynomial hierarchy with applications to QMA(2)}}}, doi = {{10.1007/s00037-022-00231-8}}, volume = {{31}}, year = {{2022}}, } @article{35707, abstract = {{The proton conductivity of two coordination networks, [Mg(H2O)2(H3L)]·H2O and [Pb2(HL)]·H2O (H5L = (H2O3PCH2)2-NCH2-C6H4-SO3H), is investigated by AC impedance spectroscopy. Both materials contain the same phosphonato-sulfonate linker molecule, but have clearly different crystal structures, which has a strong effect on proton conductivity. In the Mg-based coordination network, dangling sulfonate groups are part of an extended hydrogen bonding network, facilitating a “proton hopping” with low activation energy; the material shows a moderate proton conductivity. In the Pb-based metal-organic framework, in contrast, no extended hydrogen bonding occurs, as the sulfonate groups coordinate to Pb2+, without forming hydrogen bonds; the proton conductivity is much lower in this material.}}, author = {{Javed, Ali and Steinke, Felix and Wöhlbrandt, Stephan and Bunzen, Hana and Stock, Norbert and Tiemann, Michael}}, issn = {{2190-4286}}, journal = {{Beilstein Journal of Nanotechnology}}, keywords = {{Electrical and Electronic Engineering, General Physics and Astronomy, General Materials Science}}, pages = {{437--443}}, publisher = {{Beilstein Institut}}, title = {{{The role of sulfonate groups and hydrogen bonding in the proton conductivity of two coordination networks}}}, doi = {{10.3762/bjnano.13.36}}, volume = {{13}}, year = {{2022}}, } @article{33691, abstract = {{Near ambient pressure XPS in nitrogen atmosphere was utilized to investigate gas-solid interactions within porous SiO2 films ranging from 30 to 75 nm thickness. The films were differentiated in terms of porosity and roughness. The XPS N1s core levels of the N2 gas in presence of the SiO2 samples showed variations in width, binding energy and line shape. The width correlated with the surface charge induced in the dielectric films upon X-ray irradiation. The observed different binding energies observed for the N1s peak can only partly be associated with intrinsic work function differences between the samples, opening the possibility that the effect of physisorption at room temperature could be detected by a shift in the measured binding energy. However, the signals also show an increasing asymmetry with rising surface charge. This might be associated with the formation of vertical electrical gradients within the dielectric porous thin films, which complicates the assignment of binding energy positions to specific surface-related effects. With the support of Monte Carlo and first principles density functional theory calculations, the observed shifts were discussed in terms of the possible formation of transitory dipoles upon N2 physisorption within the porous SiO2 films.}}, author = {{de los Arcos, Teresa and Weinberger, Christian and Zysk, Frederik and Raj Damerla, Varun and Kollmann, Sabrina and Vieth, Pascal and Tiemann, Michael and Kühne, Thomas and Grundmeier, Guido}}, 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 = {{{Challenges in the interpretation of gas core levels for the determination of gas-solid interactions within dielectric porous films by ambient pressure XPS}}}, doi = {{10.1016/j.apsusc.2022.154525}}, volume = {{604}}, year = {{2022}}, } @article{34835, abstract = {{We prove an upper bound for the asymptotics of counting functions of number fields with nilpotent Galois groups. }}, author = {{Klüners, Jürgen}}, issn = {{0065-1036}}, journal = {{Acta Arithmetica}}, keywords = {{Algebra and Number Theory}}, number = {{2}}, pages = {{165--184}}, publisher = {{Institute of Mathematics, Polish Academy of Sciences}}, title = {{{The asymptotics of nilpotent Galois groups}}}, doi = {{10.4064/aa211207-16-5}}, volume = {{204}}, year = {{2022}}, } @article{35624, author = {{Lehmann, Tim and Visser, Anton and Havers, Tim and Büchel, Daniel and Baumeister, Jochen}}, issn = {{1530-0315}}, journal = {{Medicine & Science in Sports & Exercise}}, keywords = {{Physical Therapy, Sports Therapy and Rehabilitation, Orthopedics and Sports Medicine}}, number = {{9S}}, pages = {{565--565}}, publisher = {{Ovid Technologies (Wolters Kluwer Health)}}, title = {{{Surface Instability Modulates Cortical Information Processing In Multi-Joint Compound Movements}}}, doi = {{10.1249/01.mss.0000882152.12078.64}}, volume = {{54}}, year = {{2022}}, } @article{37318, abstract = {{Abstract The interaction between quantum light and matter is being intensively studied for systems that are enclosed in high-Q cavities which strongly enhance the light–matter coupling. Cavities with low Q-factors are generally given less attention due to their high losses that quickly destroy quantum systems. However, bad cavities can be utilized for several applications, where lower Q-factors are required, e.g., to increase the spectral width of the cavity mode. In this work, we demonstrate that low-Q cavities can be beneficial for preparing specific electronic steady states when certain quantum states of light are applied. We investigate the interaction between quantum light with various statistics and matter represented by a Λ-type three-level system in lossy cavities, assuming that cavity losses are the dominant loss mechanism. We show that cavity losses lead to non-trivial electronic steady states that can be controlled by the loss rate and the initial statistics of the quantum fields. We discuss the mechanism of the formation of such steady states on the basis of the equations of motion and present both analytical expressions and numerical simulations for such steady states.}}, author = {{Rose, Hendrik and Tikhonova, O V and Meier, Torsten and Sharapova, Polina}}, issn = {{1367-2630}}, journal = {{New Journal of Physics}}, keywords = {{General Physics and Astronomy}}, number = {{6}}, publisher = {{IOP Publishing}}, title = {{{Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities}}}, doi = {{10.1088/1367-2630/ac74d8}}, volume = {{24}}, year = {{2022}}, } @article{40523, abstract = {{AbstractTailored nanoscale quantum light sources, matching the specific needs of use cases, are crucial building blocks for photonic quantum technologies. Several different approaches to realize solid-state quantum emitters with high performance have been pursued and different concepts for energy tuning have been established. However, the properties of the emitted photons are always defined by the individual quantum emitter and can therefore not be controlled with full flexibility. Here we introduce an all-optical nonlinear method to tailor and control the single photon emission. We demonstrate a laser-controlled down-conversion process from an excited state of a semiconductor quantum three-level system. Based on this concept, we realize energy tuning and polarization control of the single photon emission with a control-laser field. Our results mark an important step towards tailored single photon emission from a photonic quantum system based on quantum optical principles.}}, author = {{Jonas, B. and Heinze, Dirk Florian and Schöll, E. and Kallert, P. and Langer, T. and Krehs, S. and Widhalm, A. and Jöns, Klaus and Reuter, Dirk and Schumacher, Stefan and Zrenner, Artur}}, issn = {{2041-1723}}, journal = {{Nature Communications}}, keywords = {{General Physics and Astronomy, General Biochemistry, Genetics and Molecular Biology, General Chemistry, Multidisciplinary}}, number = {{1}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Nonlinear down-conversion in a single quantum dot}}}, doi = {{10.1038/s41467-022-28993-3}}, volume = {{13}}, year = {{2022}}, } @article{44163, author = {{Rehlaender, Philipp and Wallscheid, Oliver and Schafmeister, Frank and Böcker, Joachim}}, issn = {{0885-8993}}, journal = {{IEEE Transactions on Power Electronics}}, keywords = {{Electrical and Electronic Engineering}}, number = {{11}}, pages = {{13413--13427}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{LLC Resonant Converter Modulations for Reduced Junction Temperatures in Half-Bridge Mode and Transformer Flux in the On-the-Fly Morphing Thereto}}}, doi = {{10.1109/tpel.2022.3180758}}, volume = {{37}}, year = {{2022}}, } @article{31360, abstract = {{The adaptive joining process employing friction-spun joint connectors (FSJC) is a promising method for the realization of adaptable joints and thus for lightweight construction. In addition to experimental investigations, numerical studies are indispensable tools for its development. Therefore, this paper includes an analysis of boundary conditions for the spatial discretization and mesh modeling techniques, the material modeling, the contact and friction modeling, and the thermal boundary conditions for the finite element (FE) modeling of this joining process. For these investigations, two FE models corresponding to the two process steps were set up and compared with the two related processes of friction stir welding and friction drilling. Regarding the spatial discretization, the Lagrangian approach is not sufficient to represent the deformation that occurs. The Johnson-Cook model is well suited as a material model. The modeling of the contact detection and friction are important research subjects. Coulomb’s law of friction is not adequate to account for the complex friction phenomena of the adaptive joining process. The thermal boundary conditions play a decisive role in heat generation and thus in the material flow of the process. It is advisable to use temperature-dependent parameters and to investigate in detail the influence of radiation in the entire process.}}, author = {{Oesterwinter, Annika and Wischer, Christian and Homberg, Werner}}, issn = {{2075-4701}}, journal = {{Metals}}, keywords = {{General Materials Science, Metals and Alloys}}, number = {{5}}, publisher = {{MDPI AG}}, title = {{{Identification of Requirements for FE Modeling of an Adaptive Joining Technology Employing Friction-Spun Joint Connectors (FSJC)}}}, doi = {{10.3390/met12050869}}, volume = {{12}}, year = {{2022}}, } @article{34224, abstract = {{Crack growth in structures depends on the cyclic loads applied on it, such as mechanical, thermal and contact, as well as residual stresses, etc. To provide an accurate simulation of crack growth in structures, it is of high importance to integrate all kinds of loading situations in the simulations. Adapcrack3D is a simulation program that can accurately predict the propagation of cracks in real structures. However, until now, this three-dimensional program has only considered mechanical loads and static thermal loads. Therefore, the features of Adapcrack3D have been extended by including contact loading in crack growth simulations. The numerical simulation of crack propagation with Adapcrack3D is generally carried out using FE models of structures provided by the user. For simulating models with contact loading situations, Adapcrack3D has been updated to work with FE models containing multiple parts and necessary features such as coupling and surface interactions. Because Adapcrack3D uses the submodel technique for fracture mechanical evaluations, the architecture of the submodel is also modified to simulate models with contact definitions between the crack surfaces. This paper discusses the newly implemented attribute of the program with the help of illustrative examples. The results confirm that the contact simulation in Adapcrack3D is a major step in improving the functionality of the program.}}, author = {{Joy, Tintu David and Weiß, Deborah and Schramm, Britta and Kullmer, Gunter}}, issn = {{2076-3417}}, journal = {{Applied Sciences}}, keywords = {{Fluid Flow and Transfer Processes, Computer Science Applications, Process Chemistry and Technology, General Engineering, Instrumentation, General Materials Science}}, number = {{15}}, publisher = {{MDPI AG}}, title = {{{Further Development of 3D Crack Growth Simulation Program to Include Contact Loading Situations}}}, doi = {{10.3390/app12157557}}, volume = {{12}}, year = {{2022}}, } @inproceedings{30726, author = {{Weiß, Deborah and Schramm, Britta and Kullmer, Gunter}}, booktitle = {{Procedia Structural Integrity}}, issn = {{2452-3216}}, keywords = {{General Engineering, Energy Engineering and Power Technology}}, location = {{online}}, pages = {{139--147}}, publisher = {{Elsevier BV}}, title = {{{Influence of plane mixed-mode loading on the kinking angle of clinchable metal sheets}}}, doi = {{10.1016/j.prostr.2022.03.082}}, volume = {{39}}, year = {{2022}}, } @article{41485, author = {{Clemens, Robin and Barth, Enrico and Uhlmann, Eckart and Zhan, Yingjie and Caylak, Ismail and Mahnken, Rolf}}, issn = {{1556-5068}}, journal = {{SSRN Electronic Journal}}, keywords = {{General Earth and Planetary Sciences, General Environmental Science}}, publisher = {{Elsevier BV}}, title = {{{Effects on Process Forces of Individual Milling Tool Edges Depending on the Cutting Angle and Cutting Speed When Milling Cfrp}}}, doi = {{10.2139/ssrn.4259246}}, year = {{2022}}, } @inproceedings{35627, author = {{Büchel, Daniel and Allen, Carlos and Lehmann, Tim and Sandbakk, Øyvind and Baumeister, Jochen}}, booktitle = {{Medicine & Science in Sports & Exercise}}, issn = {{1530-0315}}, keywords = {{Physical Therapy, Sports Therapy and Rehabilitation, Orthopedics and Sports Medicine}}, number = {{9S}}, pages = {{262--262}}, publisher = {{Ovid Technologies (Wolters Kluwer Health)}}, title = {{{Changes In Eeg Microstate Patterns Following Exhaustive Treadmill Exercise When Employing Reduced Channel Resolution}}}, doi = {{10.1249/01.mss.0000878300.82239.03}}, volume = {{54}}, year = {{2022}}, } @article{43156, abstract = {{The use of mechanical joining technologies offers the possibility of joining mixed material structures, which are used in particular in lightweight construction. An integrated securing of the joinability in versatile process chains is currently hardly possible as the number of combinable tool variants as well as variable force- and path-based process parameters is infinite. A versatile process chain, i.e. a sequence of all the processes and process steps required for product manufacturing, enables targeted changes to the semi-finished product, the joint, the component or the joining process that exceed the originally planned extend while still ensuring joinability. In detail, it leads to a unique joint with its own mechanical property profile, which, against the background of the resulting infinite number of combinations, makes it impossible to secure the joinability on the conventional experimentally based approach without extensive safety factors. The Transregional Colaborative Research Center 285 (TCRC285), which also initiated this special issue, is intended to enable mechanical joining technology to be versatile in the sense of high application flexibility. This is to be achieved with a numerical representation of the complete process chain from the incoming semi finished product via the joining part production and the joining process to the property profile of the joint in the operating phase. Thus a predictability of the joinability can be achieved and improvements in the individual life cycles of a joint can be realized by grasping the cause-and-effect relationships. On the basis of this knowledge, new possibilities for intervention in the joining process are to be created for the adaptation of the joining processes. With the aid of the methods developed for this purpose, tools will later be available to the end user to substitute the large number of mechanical joining processes or joining task-specific configurations with a smaller number of adaptable processes. This expands the flexibility in material choices, enabling challenges in environmental issues and sustainability to be overcome.}}, author = {{Meschut, Gerson and Merklein, Marion and Brosius, Alexander and Bobbert, Mathias}}, issn = {{0944-6524}}, journal = {{Production Engineering}}, keywords = {{Industrial and Manufacturing Engineering, Mechanical Engineering}}, number = {{2-3}}, pages = {{187--191}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Mechanical joining in versatile process chains}}}, doi = {{10.1007/s11740-022-01125-y}}, volume = {{16}}, year = {{2022}}, }