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IEEE/RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob)

作者： Bernhard Kleiner Nils Ziegenspeck Roman Stolyarov Hugh Herr Urs Schneider Alexander Verl Department of Biomechatronic Systems Fraunhofer Institute for Manufacturing Engineering and Automation IPA Germany Massachusetts Institute of Technology Center for Extreme Bionics USA University Stuttgart Institute of Control Engineering of Tool Machines and Manufacturing Units ISW Germany

Ahstract- Current developments in ankle prosthetics are focusing on integrated actuators to fully control torques and angles. This enables terrain adaptive strategies e.g. for stairs and ramps. EMG and motion sensor input are state of the art approaches to classify different terrain or terrain changes, but these approaches have limited capabilities and detection accuracy. We present a novel approach for the detection of obstacles using a wearable Frequency-Modulated Continuous Wave (FMCW) radar integrated into a lower limb prosthetic device. With the continuous rotational motion of the tibia during the swing and stance phase, the radar scans the profile of the terrain in sagittal plane in front of the prosthesis. Gait phases are detected using a neural network classifiers based on inertial sensor data. Performance of the system is demonstrated in a single stair detection scenario.

关键词： Prosthetics Radar antennas Radar measurements Chirp Foot Estimation

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Combination of Knoevenagel Polycondensation and Water-Assisted Dynamic Michael-Addition-Elimination for the Synthesis of Vinylene-Linked 2D Covalent Organic Frameworks

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Angewandte Chemie 2022年第21期134卷

作者： Dr. Shunqi Xu Dr. Zhongquan Liao Dr. Arezoo Dianat Dr. Sang-Wook Park Dr. Matthew A. Addicoat Dr. Yubin Fu Dominik L. Pastoetter Filippo Giovanni Fabozzi Dr. Yannan Liu Prof. Gianaurelio Cuniberti Dr. Marcus Richter Prof. Stefan Hecht Prof. Xinliang Feng Chair of Molecular Functional Materials Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry Technische Universität Dresden Mommsenstrasse 4 01069 Dresden Germany Department of Synthetic Materials and Functional Devices Max-Planck Institute of Microstructure Physics 06120 Halle Germany Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) 01109 Dresden Germany Chair of Material Science and Nanotechnology Faculty of Mechanical Science and Engineering Technische Universität Dresden Hallwachstraße 3 01069 Dresden Germany Leibniz-Institute for Polymer Research Dresden e.V. (IPF) 01069 Dresden Germany School of Science and Technology Nottingham Trent University Clifton Lane Nottingham NG11 8NS UK DWI-Leibniz Institute for Interactive Materials & Institute of Technical and Macromolecular Chemistry RWTH Aachen University 52074 Aachen Germany

Vinylene-linked two-dimensional conjugated covalent organic frameworks (V-2D-COFs), belonging to the class of two-dimensional conjugated polymers, have attracted increasing attention due to their extended π-conjugation over the 2D backbones associated with high chemical stability. The Knoevenagel polycondensation has been demonstrated as a robust synthetic method to provide cyano (CN)-substituted V-2D-COFs with unique optoelectronic, magnetic, and redox properties. Despite the successful synthesis, it remains elusive for the relevant polymerization mechanism, which leads to relatively low crystallinity and poor reproducibility. In this work, we demonstrate the novel synthesis of CN-substituted V-2D-COFs via the combination of Knoevenagel polycondensation and water-assisted dynamic Michael-addition-elimination, abbreviated as KMAE polymerization. The existence of C=C bond exchange between two diphenylacrylonitriles ( M1 and M6 ) is firstly confirmed via in situ high-temperature NMR spectroscopy study of model reactions. Notably, the intermediate M4 synthesized via Michael-addition can proceed the Michael-elimination quantitatively, leading to an efficient C=C bond exchange, unambiguously confirming the dynamic nature of Michael-addition-elimination. Furthermore, the addition of water can significantly promote the reaction rate of Michael-addition-elimination for highly efficient C=C bond exchange within 5 mins. As a result, the KMAE polymerization provides a highly efficient strategy for the synthesis of CN-substituted V-2D-COFs with high crystallinity, as demonstrated by four examples of V-2D-COF-TFPB-PDAN, V-2D-COF-TFPT-PDAN, V-2D-COF-TFPB-BDAN, and V-2D-COF-HATN-BDAN, based on the simulated and experimental powder X-ray diffraction (PXRD) patterns as well as N 2 -adsorption–desorption measurements. Moreover, high-resolution transmission electron microscopy (HR-TEM) analysis shows crystalline domain sizes ranging from 20 to 100 nm for the newly synthesized V-2D-COF

关键词： Dynamic Chemistry Knoevenagel Polymerization Two-Dimensional Organic Framework Vinylene-Linked systems

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100 µJ, 100 kHz, CEP-Stable High-Power Few-Cycle Fiber Laser 12

100 µJ, 100 kHz, CEP-Stable High-Power Few-Cycle Fiber Lase...

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Ultrafast Optics XII 2019

作者： Shestaev, E. Hoff, D. Sayler, A.M. Hädrich, S. Just, F. Eidam, T. Jójárt, P. Szabó, A. Várallyay, Z. Osvay, K. Paulus, G.G. Tünnermann, A. Limpert, J. Friedrich-Schiller-Universität Jena Abbe Center of Photonics Institute of Applied Physics Albert-Einstein-Straße 15 Jena07745 Germany Friedrich-Schiller-Universität Jena Institut für Optik und Quantenelektronik Max-Wien-Platz 1 Jena07743 Germany Helmholtz-Institute Jena Fröbelstieg 3 Jena07743 Germany Active Fiber Systems GmbH Ernst-Ruska-Ring 11 Jena07745 Germany ELI-ALPS ELI-HU Non-Profit Ltd. Dugonics tér 13 SzegedH-6720 Hungary Fraunhofer Institute for Applied Optics and Precision Engineering IOF Albert-Einstein-Straße 7 Jena07745 Germany

ISBN: (纸本)9781510635128

We present a CEP-stable Yb:fiber-based laser system delivering 100 µJ few-cycle pulses at the repetition rate of 100 kHz. The CEP stability of a free-running system amounts to 340 mrad (10 Hz … 50 kHz) measured on a pulse-to-pulse basis with a Stereo-ATI phase meter. A slow loop from the ATI to the AOM acting as a pulse picking device has been implemented, allowing for suppression of CEP fluctuations below 300 Hz. To the best of our knowledge, this is the highest performance in terms of CEP stability achieved from a fiber-based high-power few-cycle laser to date. © 2019 SPIE. All rights reserved.

关键词： Fiber lasers

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The ECFA Early Career Researcher's Panel: composition, structure, and activities, 2021-2022

arXiv

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arXiv 2022年

作者： Geanta, Andrei Alexandru Amendola, Chiara Apolinario, Liliana Arling, Jan-Hendrik Ashkenazi, Adi Augsten, Kamil Bagnaschi, Emanuele Bakos, Evelin Barak, Liron Bastos, Diogo Benato, Giovanni Bilin, Bugra Kraljevic, Neven Blaskovic Brenner, Lydia Brizioli, Francesco Camper, Antoine Camplani, Alessandra Vidal, Xabier Cid Dag, Hüseyin de Almeida Dias, Flavia Degens, Jordy Diociaiuti, Eleonora Dufour, Laurent Dunne, Katherine Erhardt, Filip Ghinescu, Stefan-Alexandru Gouskos, Loukas Herzan, Andrej Hinger, Viktoria Hiti, Bojan Ilg, Armin Irles, Adrián Jarkovská, Kateřina Jovicevic, Jelena Keszeghova, Lucia Kirschenmann, Henning Klaver, Suzanne Konstantinou, Sotiroulla Kuich, Magdalena Kumari, Neelam Gajdošová, Katarína Křížková Lelek, Aleksandra Lorenz, Jeanette Carvalho, Ana Luisa Major, Péter Malczewski, Jakub Mancini, Giada Martikainen, Laura Maurice, Émilie Mee, Seán Milosevic, Vukasin Moravcova, Zuzana Valero, Laura Moreno Moureaux, Louis Mäntysaari, Heikki Nikiforou, Nikiforos Otarid, Younes Pitt, Michael Placinta, Vlad-Mihai Räuber, Géraldine Ripellino, Giulia Roberts, Bryn Šantelj, Luka Schramm, Steven Shopova, Mariana Skovpen, Kirill Smolkovič, Aleks Sokmen, Gamze Sznajder, Pawel Gomez, Lourdes Urda Waldron, Abigail Victoria Williams, Sarah Zaccolo, Valentina Zardoshti, Nima Zeyen, Manuel Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest-Magurele Romania IRFU CEA Université Paris-Saclay Gif-sur-Yvette France Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Deutsches Elektronen-Synchrotron DESY Hamburg Germany Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic CERN Geneva Switzerland Institute of Physics University of Belgrade Belgrade Serbia INFN Laboratori Nazionali del Gran Sasso L'Aquila Italy MAX IV Laboratory Lund University Lund Sweden Nikhef National Institute for Subatomic Physics University of Amsterdam Amsterdam Netherlands INFN Sezione di Perugia Perugia Italy Department of Physics University of Oslo Oslo Norway Niels Bohr Institute University of Copenhagen Copenhagen Denmark Universidade de Santiago de Compostela Santiago de Compostela Spain Department of Physics Bursa Technical University Bursa Turkey INFN Laboratori Nazionali di Frascati Frascati Italy Department of Physics Stockholm University Stockholm Sweden Physics Department Faculty of Science University of Zagreb Zagreb Croatia Slovak Academy of Sciences Bratislava Slovakia Paul Scherrer Institut Villigen Switzerland Department of Experimental Particle Physics Jožef Stefan Institute Department of Physics University of Ljubljana Ljubljana Slovenia Physik-Institut University of Zürich Zürich Switzerland IFIC Universitat de València and CSIC València Spain Faculty of Mathematics and Physics Charles University Prague Czech Republic Faculty of Mathematics Physics and Informatics Comenius University Bratislava Slovakia Department of Physics University of Helsinki Helsinki Finland Nikhef National Institute for Subatomic Physics VU University Amsterdam Amsterdam Netherlands University of Cyprus Nicosia Cyprus University of Warsaw Wa

The European Committee for Future Accelerators (ECFA) Early Career Researcher's (ECR) panel, which represents the interests of the ECR community to ECFA, officially began its activities in January 2021. In the first two years, the panel has defined its own internal structure, responded to ECFA requests for feedback, and launched its own initiatives to better understand and support the diverse interests of early career researchers. This report summarises the panel composition and structure, as well as the different activities the panel has been involved with during the first two years of its existence. © 2022, CC BY.

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3.2-mJ sub-10-fs pulses at 100 kHz

3.2-mJ sub-10-fs pulses at 100 kHz

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Advanced Solid State Lasers, ASSL 2019 - Part of Laser Congress 2019

作者： Hädrich, Steffen Simon, Peter Nagy, Tamás Blumenstein, Andreas Walther, Nico Kienel, Marco Shestaev, Evgeny Stutzki, Fabian Gaida, Christian Breitkopf, Sven Jójárt, Péter Várallyay, Zoltán Osvay, Károly Eidam, Tino Limpert, Jens Active Fiber Systems GmbH Ernst-Ruska-Ring 17 Jena07745 Germany ELI-ALPS ELI-HU Non-Profit Ltd H-6720 Szeged Dugonics tér13 Hungary Laser-Laboratorium Göttingen E.V Hans-Adolf-Krebs-Weg 1 Göttingen37077 Germany Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy Max-Born-Strabe 2A Berlin12489 Germany Institute of Applied Physics Abbe Center of Photonics Friedrich-Schiller-Universität Jena Albert-Einstein-Str. 8 Jena07745 Germany Helmholtz-Institute Jena Fröbelstieg 3 Jena07743 Germany Fraunhofer Institute for Applied Optics and Precision Engineering Albert-Einstein-Str. 7 Jena07745 Germany

We present sub-10-fs, 3.2mJ pulses at 100kHz repetition-rate. This significant upscaling of average power was achieved by using a 6-m-long stretched flexible capillary. Such a technique has the potential to revolution...

ISBN: (纸本)9781557528209

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Optimization of global production scheduling with deep reinforcement learning

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Procedia CIRP 2018年 72卷 1264-1269页

作者： Bernd Waschneck André Reichstaller Lenz Belzner Thomas Altenmüller Thomas Bauernhansl Alexander Knapp Andreas Kyek Graduate School advanced Manufacturing Engineering (GSaME) - Universität Stuttgart Nobelstr 12 70569 Stuttgart Germany Infineon Technologies AG Am Campeon 1-12 85579 Neubiberg Germany Institute for Software & Systems Engineering University of Augsburg Germany Fraunhofer Institute for Manufacturing Engineering and Automation IPA Nobelstr. 12 70569 Stuttgart

Industrie 4.0 introduces decentralized, self-organizing and self-learning systems for production control. At the same time, new machine learning algorithms are getting increasingly powerful and solve real world problems. We apply Google DeepMind’s Deep Q Network (DQN) agent algorithm for Reinforcement Learning (RL) to production scheduling to achieve the Industrie 4.0 vision for production control. In an RL environment cooperative DQN agents, which utilize deep neural networks, are trained with user-defined objectives to optimize scheduling. We validate our system with a small factory simulation, which is modeling an abstracted frontend-of-line semiconductor production facility.

关键词： Production Scheduling Reinforcement Learning Machine Learning in Manufacturing

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Erratum to “Component-based SHGC determination of BIPV glazing for product comparison” [Energy Build. 320 (2024) 114592]

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Energy and Buildings 2024年 324卷

作者： Helen Rose Wilson Tilmann E. Kuhn Hisashi Ishii Daniel Valencia-Caballero Nuria Martin Chivelet Jinqing Peng Rebecca Jing Yang Yukun Zang Hua Ge Kai Ye Jacob C. Jonsson Konstantinos Kapsis Fraunhofer Institute for Solar Energy Systems ISE Heidenhofstr. 2 79110 Freiburg Germany LIXIL Corporation LIXIL Housing Technology Technology Research Institute Nakasato 3000 Noda City Chiba Japan TECNALIA Basque Research and Technology Alliance (BRTA) Paseo Mikeletegi 2 San Sebastián 20009 Spain CIEMAT Photovoltaic Solar Energy Unit Avda. Complutense 40 28040 Madrid Spain College of Civil Engineering Hunan University Changsha 410082 Hunan China RMIT University Melbourne VIC 3000 Australia Concordia University 1455 de Maisonneuve Blvd. W. Montreal H3G 1M8 Canada Windows and Daylighting Group LBNL 1 Cyclotron Road Mail Stop 90R3111 Berkeley CA 94720-8134 USA University of Waterloo 200 University Avenue West CPH 3666 Waterloo Ontario N2L 3G1 Canada

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Semiconducting 2D-materials: Nano-sandbox for fundamental physics and new platform for optical coatings, light emission and quantum light sources

Semiconducting 2D-materials: Nano-sandbox for fundamental ph...

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Optical Interference Coatings, OIC 2019

作者： Knopf, Heiko Lundt, Nils Bucher, Tobias Mupparapu, Rajeshkumar Löchner, Franz George, Antony Neumann, Christof Fasold, Stefan Sedov, Evgeny Waldherr, Max Klaas, Martin Tongay, Sefaating Klembt, Sebastian Chong, Katie Choi, Duk-Yong Taniguchip, Takashi Watanabe, Kenji Schulz, Ulrike Kavokin, Alexey Höfling, Sven Turchanin, Andrey Pertsch, Thomas Schneider, Christian Setzpfandt, Frank Staude, Isabelle Eilenberger, Falk Institute of Applied Physics Abbe Center of Photonics Friedrich Schiller University Albert-Einstein-Straße 15 Jena07745 Germany Fraunhofer Institute of Applied Optics and Precision Engineering IOF Center of Excellence in Photonics Albert-Einstein-Straße 7 Jena07745 Germany Max Planck School of Photonics Germany Technische Physik and Wilhelm-Conrad-Röntgen-Research Center for Complex Material Systems Universität Würzburg Würzburg Am HublandD-97074 Germany Institute of Physical Chemistry Friedrich Schiller University Jena Jena07743 Germany School of Physics and Astronomy University of Southampton Highfield SouthamptonSO171BJ United Kingdom Vladimir State University named after A.G. and N.G. Stoletovs Gorky str. 87 Vladimir600000 Russia School for Engineering of Matter Transport and Energy Arizona State University TempeAZ85287 United States Nonlinear Physics Centre Research School of Physics and Engineering Australian National University CanberraACT2601 Australia Laser Physics Centre Research School of Physics and Engineering Australian National University CanberraACT2601 Australia PNational Institute for Materials Science Tsukuba Ibaraki305-0044 Japan Westlake University 18 Shilongshan Road Hangzhou Zhejiang Province310024 China Institute of Natural Sciences Westlake Institute for Advanced Study 18 Shilongshan Road Hangzhou Zhejiang Province310024 China SUPA School of Physics and Astronomy University of St. Andrews St. AndrewsKY 16 9SS United Kingdom

ISBN: (纸本)9781943580583

Two-dimensional (2D) materials are interesting candidates for usage in optical coatings. The offer a natural access for the control of coating geometries down to the atomic scale. The set of 2D-materials, which is available for optical applications, spans dielectrics, semiconductors and (semi-)metals;but with sometimes vastly different properties from their bulk counterparts. In this talk I will present functionalized optical coatings consisting of 2D-materials but also functionalized optical coatings embedded with 2D-materials. I will discuss their specific properties, focusing on the development of excitonic systems and on highly nonlinear optical coatings for wavelength conversion and quantum light sources. © OSA 2019 © 2019 The Author(s)

关键词： Light sources

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Key action fields for nearly carbon-neutral districts: stakeholder-specific strategies and practice

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IOP Conference Series: Earth and Environmental Science 2020年第2期588卷

作者： S Hess D Kreulitsch I Kalpkirmaz Rizaoglu A Honold M Schmid M Stobbe C Nytsch-Geusen T Lützkendorf University of Freiburg Department of Sustainable Systems Engineering INATECH Chair for Solar Energy Systems Freiburg Germany Berlin University of the Arts Institute for Architecture and Urban Planning Department of Building Physics and Building Technology Berlin Germany University of Wuppertal (BUW) Faculty of Architecture and Civil Engineering Chair of Building Physics and Technical Services Wuppertal Germany Karlsruhe Institute of Technology (KIT) Chair for Sustainable Management of Housing and Real Estate Karlsruhe Germany Biberach University of Applied Sciences and Fraunhofer Institute for Solar Energy Systems ISE Dept. Energy Efficient Buildings Biberach and Freiburg Germany

In accordance with the UN Sustainable Development Goals, many countries aim at nearly zero carbon emissions of their building sector by 2050. The research college ***.2050 is a collaboration of five PhD students and their supervisors to support this goal. In this paper, five key action fields for transformation of urban districts are described, and decisive stakeholders are identified and linked to the action fields. As a case study, the urban district Mierendorff-Island in Berlin is introduced. Three strategies to support transformation are identified: Firstly, new digital planning tools should be applied to assess and improve the energetic performance of new and existing buildings and to illustrate it to decision makers. Secondly, digital processes should be combined throughout the lifecycle of a building by building information modeling (BIM). This can ensure the energetic quality and enable cost-effective construction, servicing and monitoring. Thirdly, start-ups and contractors need support for development of new business models and technical solutions, which can e.g. enable disruptive technologies. Awareness of stakeholders on the transformational state of a district enables them to identify windows of opportunity to spring into action. Framework conditions and support measures determine if they act in favour of the transformation or not.

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Life Cycle Assessment of Innovative Materials for Thermal Energy Storage in Buildings

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Procedia CIRP 2018年 69卷 206-211页

作者： Rafael Horn Matthias Burr Dominik Fröhlich Stefan Gschwander Michael Held Jan Paul Lindner Gunther Munz Björn Nienborg Peter Schossig University of Stuttgart Institute for Acoustics and Building Physics Department of Life Cycle Engineering Wankelstraße 5 70563 Stuttgart Germany Fraunhofer Institute for Solar Energy Systems (ISE) Heidenhofstr. 2 79110 Freiburg Germany

The politically endorsed reduction of greenhouse gas emissions entails the transformation of thermal energy systems towards renewable energies, especially in the building sector. This comes along with a demand in energy storage, as there is a time offset between energy availability and demand. As sensible heat storages induce major losses and have limited energy density, current water-based solutions are only partially sufficient to meet these demands. Within the project “Speicher-LCA” the environmental performance of a variety of innovative materials available for energy storage in buildings is assessed. The project provides the first extensive comparison of environmental profiles of various thermal energy storage materials, including phase change, thermochemical and sorption materials. The specific performances in the storage cycle are taken into account. All results will be publically accessible through a spreadsheet tool including a comprehensive set of materials, components as well as their integration into different building types. This paper discusses the methodological framework of the study and presents the environmental assessment results for selected materials. It highlights the main challenges in the assessment of innovative storage materials on different system levels which require specific definition of functional units accordingly. The first assessment results on material level for selected phase change (PCM) and thermo-chemical materials (TCM) allow an environmental characterization regarding their potential application in thermal storages. In addition, ranges of required numbers of storage cycles for amortization have been calculated for the non-renewable primary energy demand. For PCMs amortization cycles range between ∼20 to 150 cycles for salt hydrates and up to ∼280 cycles for paraffins. Regarding TCM, energetic amortization of silica gel and zeolite 13x is reached after ∼60 and ∼260 cycles respectively. Since the realization of storage componen

关键词： Thermal energy storage life cycle assessment phase change materials thermochemical storage materials

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