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Laser-Welded Steel Foils with Sapphire Substrates

Acta Metallurgica Sinica(English Letters) 2016年第7期29卷 683-688页

作者： Araceli de Pablos-Martin Christian Grosse Andreas Cismak Thomas Hoche fraunhofer institute for microstructure of materials and systems imws Walter-Htilse-Strage 1 06120 HalleGermany

A nanosecond pulsed laser was used to weld stainless steel foils of 10 ~tm thickness to the sapphire substrates. The microstructure of the bonded interface was studied. Both materials were partially ablated under the influence of the laser beam. An inhomogeneous distribution of the steel and sapphire along the bonded interface is observed. The electrical resistance of the steel foil was measured before and after laser welding, showing that the weld slightly increases the electrical resistance but still keeps the values acceptable for electrical contacts.

关键词： Laser welding Stainless steel Sapphire Electrical resistance

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Chemical storage of hydrogen in synthetic liquid fuels:building block for CO_(2)-neutral mobility

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Clean Energy 2021年第2期5卷 180-186页

作者： R.P.Lee L.G.Seidl B.Meyer Iinstitute of energy process engineering and chemical engineering tu bergakademie freibergfuchsmuehlenweg 9d09599 freiberggermany fraunhofer institute for microstructure of materials and systems imws branch lab freiberg—circular carbon technologiesfuchsmuehlenweg 9d09599 freiberggermany

Green hydrogen is anticipated to play a major role in the decarbonization of the mobility *** chemical storage in CO_(2)-neutral synthetic liquid fuels is advantageous in terms of safety and reliability compared to other hydrogen storage developments,and thus represents a complementary building block to developments in electric and hydrogen mobility for the low-carbon transition in the mobility *** development is especially relevant for transport sectors which will have no alternatives to liquid fuels in the foreseeable *** this paper,three alternative technological routes for the chemical storage of hydrogen in CO_(2)-neutral synthetic liquid fuels are identified and comparatively evaluated in terms of feedstock potential,product potential,demand for renewable electricity and associated costs,efficiency as well as expected market *** all three routes exhibited similar levels of overall efficiencies,electricity-based liquid fuels in Germany are currently limited by the high cost and limited supply of renewable *** contrast,liquid fuels generated from biogenic waste have a constant supply of biogenic feedstock and are largely independent from the supply and cost of renewable electricity.

关键词： CO_(2)-neutral synthetic liquid fuels renewable hydrogen chemical storage waste-to-fuels electricity-based fuels circular carbon technologies

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Material-specific high-resolution table-top extreme ultraviolet microscopy

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Light(Science & Applications) 2022年第5期11卷 991-1000页

作者： Wilhelm Eschen Lars Loetgering Vittoria Schuster Robert Klas Alexander Kirsche Lutz Berthold Michael Steinert Thomas Pertsch Herbert Gross Michael Krause Jens Limpert Jan Rothhardt institute of Applied Physics Abbe Center of PhotonicsFriedrich-SchillerUniversität JenaAlbert-Einstein-Str.1507745 JenaGermany Helmholtzinstitute Jena Fröbelstieg 307743 JenaGermany Leibniz institute of Photonic Technology Albert-Einstein-Straße 907745 JenaGermany fraunhofer institute for microstructure of materials and systems imws WalterHülse-Str.106120 HalleGermany fraunhofer institute for Applied Optics and Precision Engineering IOF Albert-Einstein-Str.707745 JenaGermany

Microscopy with extreme ultraviolet(EUV)radiation holds promise for high-resolution imaging with excellent material contrast,due to the short wavelength and numerous element-specific absorption edges available in this spectral *** the same time,EUV radiation has significantly larger penetration depths than *** thus enables a nano-scale view into complex three-dimensional structures that are important for material science,semiconductor metrology,and next-generation ***,we present high-resolution and material-specific microscopy at 13.5 nm *** combine a highly stable,high photon-flux,table-top EUV source with an interferometrically stabilized ptychography *** utilizing structured EUV illumination,we overcome the limitations of conventional EUV focusing optics and demonstrate high-resolution microscopy at a half-pitch lateral resolution of 16 ***,we propose mixed-state orthogonal probe relaxation ptychography,enabling robust phase-contrast imaging over wide fields of view and long acquisition *** this way,the complex transmission of an integrated circuit is precisely reconstructed,allowing for the classification of the material composition of mesoscopic semiconductor systems.

关键词： resolution ultraviolet extreme

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Asymmetric fraunhofer pattern in Josephson junctions from heterodimensional superlattice V_(5)S_(8)

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Chinese Physics B 2022年第5期31卷 63-67页

作者： Juewen Fan Bingyan Jiang Jiaji Zhao Ran Bi Jiadong Zhou Zheng Liu Guang Yang Jie Shen Fanming Qu Li Lu Ning Kang Xiaosong Wu State Key Laboratory for Artificial microstructure and Mesoscopic Physics Frontiers Science Center for Nano-optoelectronicsPeking UniversityBeijing 100871China Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(Ministry of Education) Beijing Key Laboratory of Nanophotonics&Ultrafine Optoelectronic Systemsand School of PhysicsBeijing Institute of TechnologyBeijing 100081China School of materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Shenzhen institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Introduction of spin-orbit coupling(SOC)in a Josephson junction(JJ)gives rise to unusual Josephson *** investigate JJs based on a newly discovered heterodimensional superlattice V_(5)S_(8) with a special form of *** unique homointerface of our JJs enables elimination of extrinsic effects due to interfaces and *** observe asymmetric fraunhofer patterns with respect to both the perpendicular magnetic field and the *** asymmetry is influenced by an in-plane magnetic *** of the pattern points to a nontrivial spatial distribution of the Josephson current that is intrinsic to the SOC in V_(5)S_(8).

关键词： fraunhofer pattern Josephson junction spin-orbit coupling homointerface

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