@techreport{65426,
  abstract     = {{In diesem Forschungsprojekt wurde ein Messverfahren zur Bestimmung akustischer Materialparameter von Polymeren im Ultraschallfrequenzbereich entwickelt. Das Verfahrens sollte, die üblichen standardisierten Prüfmethoden erweitern, die bislang primär im quasistatischen oder niederfrequenten Bereich eingesetzt wurden. Im Gegensatz zu bestehenden Verfahren wie dem Zeitstandversuch oder der Dynamisch Mechanischen Analyse (DMA) nach [DIN6721] sollte die neue Methode eine nicht-invasive Charakterisierung der (visko-)elastischen Materialparameter im Frequenzbereich von 0,75 MHz bis 2,5 MHz ermöglichen. Das entwickelte Ultraschallmesssystem arbeitet nach dem Puls Echo-Prinzip und kann eine räumlich segmentierte, ringförmige Anregung erzeugen. Die Bestimmung der frequenzabhängigen Materialparameter geschieht hierbei über ein inverses Verfahren. Die Ergebnisse des Projekts zeigen, dass die Segmentierung der Anregung, die Geometrie der Probe sowie das Puls-Echo-Messprinzip die Messergebnisse sowie die Sensitivität gegenüber Scherparametern wesentlich beeinflussen. Im Rahmen des Projektes wurde auch eine statistische Auswertung des Optimierungsverfahrens hinsichtlich transversal-isotroper Materialsymmetrie mit Rayleigh-Dämpfung durchgeführt. Die Ergebnisse zeigen, dass das entwickelte Verfahren gute Konvergenzeigenschaften aufweist und sich durch verbesserte Robustheit auszeichnet.}},
  author       = {{Dreiling, Dmitrij and Itner, Dominik and Birk, Carolin and Gravenkamp, Hauke and Henning, Bernd}},
  keywords     = {{Materialcharakterisierung, Polymer, Inverses Problem, Ultraschall, Optimierung}},
  pages        = {{12}},
  publisher    = {{Hannover : Technische Informationsbibliothek}},
  title        = {{{Vollständige Bestimmung der akustischen Materialparameter von Polymeren II}}},
  year         = {{2026}},
}

@article{65007,
  author       = {{Knaup, Felix and Schöppner, Volker}},
  journal      = {{International Polymer Processing}},
  keywords     = {{CFD simulation, melting modeling, melting process, polymer extrusion, single-screw extruder}},
  title        = {{{Improvement of a numerical two-phase simulation model for single-screw plasticizing extruders based on experimental investigations}}},
  doi          = {{10.1515/ipp-2025-0072}},
  year         = {{2025}},
}

@article{35657,
  abstract     = {{The controlled delivery of active pharmaceutical ingredients to the site of disease represents a major challenge in drug therapy. Particularly when drugs have to be transported across biological barriers, suitable drug delivery systems are of importance. In recent years responsive delivery systems have been developed which enable a controlled drug release depending on internal or external stimuli such as changes in pH, redox environment or light and temperature. In some studies delivery systems with reactivity against two different stimuli were established either to enhance the response by synergies of the stimuli or to broaden the window of possible trigger events. In the present review numerous exciting developments of pH-, light- and redox-cleavable polymers suitable for the preparation of smart delivery systems are described. The review discusses the different stimuli that can be used for a controlled drug release of polymer-based delivery systems. It puts a focus on the different polymers described for the preparation of stimuli-sensitive systems, their preparation techniques as well as their stimuli-responsive degradation. © 2022 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.}},
  author       = {{Rust, Tarik and Jung, Dimitri and Langer, Klaus and Kuckling, Dirk}},
  issn         = {{0959-8103}},
  journal      = {{Polymer International}},
  keywords     = {{drug delivery system, stimuli, polymer, cleavable}},
  number       = {{1}},
  pages        = {{5--19}},
  publisher    = {{Wiley}},
  title        = {{{Stimuli‐accelerated polymeric drug delivery systems}}},
  doi          = {{10.1002/pi.6474}},
  volume       = {{72}},
  year         = {{2023}},
}

@inproceedings{39027,
  abstract     = {{We experimentally investigate the generation of continuous-wave optical squeezing from a titanium-indiffused lithium niobate waveguide resonator at low and high frequencies. The device promises integration with different platform chips for more complex optical systems.}},
  author       = {{Domeneguetti, Renato R. and Conradi, Hauke and Kleinert, Moritz and Kießler, Christian and Stefszky, Michael and Herrmann, Harald and Silberhorn, Christine and Andersen, Ulrik L. and Neergaard-Nielsen, Jonas Schou and Gehring, Tobias}},
  booktitle    = {{2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference}},
  keywords     = {{Optical systems, Polymer waveguides, Quantum key distribution, Quantum light sources, Squeezed states, Waveguides}},
  pages        = {{eb_4_1}},
  publisher    = {{Optica Publishing Group}},
  title        = {{{Nonlinear waveguides for integrated quantum light source}}},
  year         = {{2021}},
}

@phdthesis{24753,
  abstract     = {{Polymer Laser Sintering (LS) is one of the most used Additive Manufacturing (AM) technologies for the tool-less production of polymer parts. The raw material is a polymer powder which is melted layerwise by the use of laser energy. Especially for the production of single parts, small series, individualized and complex structures, the technology is yet established in few branches. However, inhomogeneous and hardly controllable thermal effects during manufacturing limit the build reproducibility. The present work focuses on temperatures within so-called part cakes, their time dependency and their influence on process quality. Therefore, a temperature measurement system is implemented into a commercial laser sintering machine. Based on the experimental data a model to simulate heat transfer within part cakes is set up. Individual thermal histories during processing are successfully correlated with position dependent powder ageing effects. Another focus is on the analysis of a recycling optimized material. First results of correlations between thermal histories and part properties are shown in order to provide an outlook to further research. The data and knowledge gained through this work can be used to understand thermal effects in greater depth and to increase the process quality via optimizations.}},
  author       = {{Josupeit, Stefan}},
  isbn         = {{978-3-8440-6720-0}},
  keywords     = {{Additive Manufacturing, Polymer Laser Sintering, Polymer Science}},
  pages        = {{178}},
  publisher    = {{Shaker Verlag GmbH}},
  title        = {{{On the Influence of Thermal Histories within Part Cakes on the Polymer Laser Sintering Process}}},
  volume       = {{11}},
  year         = {{2019}},
}

@article{52208,
  author       = {{Khripko, Diana and Schlüter, Alexander and Rommel, Benjamin and Rosano, Michele and Hesselbach, Jens}},
  issn         = {{2008-9163}},
  journal      = {{International Journal of Energy and Environmental Engineering}},
  keywords     = {{Primary energy demand, Energy efficiency within industry, Polymer processing}},
  number       = {{2}},
  pages        = {{225--233}},
  publisher    = {{Springer Science and Business Media LLC}},
  title        = {{{Energy demand and efficiency measures in polymer processing: comparison between temperate and Mediterranean operating plants}}},
  doi          = {{10.1007/s40095-015-0200-2}},
  volume       = {{7}},
  year         = {{2016}},
}

@inproceedings{23858,
  abstract     = {{A large proportion of plastics today is compounded, which means the process from refining a raw material to the processable material. For this process compounding extruders are used which mostly involve tightly intermeshing, co-rotating twin screw extruders. These extruders consist of two closely spaced screws which rotate in the same direction and convey the raw material to the screw tip. These screws are surrounded by several barrel modules which heat or cool the material. As the whole design of the machine is modularly arranged the process behavior of a twin screw extruder depends for the main part on the arrangement of the screw and the barrel elements. Until today this arrangement and process optimization is conducted by experienced engineers and with the help of trial-and-error methods. Furthermore, theoretical models are used with which the behavior of the extruder is estimated. As these models are mostly very complex they are only made available with the realization in different software projects. One of the tools is called SIGMA. Within this paper SIGMA is introduced as a software to optimize a twin screw extruder. SIGMA supports the engineer already in the early stages of the extruder arrangement.}},
  author       = {{Kretzschmar, Nils and Schöppner, Volker}},
  booktitle    = {{Proceedings of the 2010 Summer Computer Simulation Conference}},
  keywords     = {{process optimization, polymer engineering, compounding, twin screw extruder, simulation}},
  pages        = {{133–140}},
  publisher    = {{Society for Computer Simulation International}},
  title        = {{{Simulating Tightly Intermeshing, Co-Rotating Twin Screw Extruders with SIGMA}}},
  year         = {{2010}},
}