Results 101 to 110 of about 259,483 (342)

A New Approach to the Study of Multi-Pass Welds–Microstructure and Properties of Welded 20-mm-Thick Superduplex Stainless Steel

Applied Sciences, 2019
Type 2507 superduplex stainless steel 20 mm in thickness was multi-pass-welded with Gas Metal Arc Welding (GMAW) and Flux-Cored Arc Welding (FCAW) processes. Recommended and higher arc energies and inter-pass temperatures were used.
Maria Asuncion Valiente Bermejo, Kjell Hurtig, Daniel Eyzop, Leif Karlsson   +3 more
doaj   +1 more source

Through Diamond Robust Surface Enhanced Raman Spectroscopy

Advanced Functional Materials, EarlyView.
Thin film diamond growth offers a unique opportunity for Surface Enhanced Raman Spectroscopy (SERS); the encapsulation of plasmonic nanostructures within a transparent, chemically stable, and physically robust coating. The diamond acts as both a window and protective layer, enabling illumination of the plasmonic nanostructures through the diamond ...
Kieran N. Twaddle, Rebecca J. Watkins, Ralph J. Moors, Massimiliano L.A. Ramsay, Richard B. Jackman   +4 more
wiley   +1 more source

Carrier Recombination in Nitride-Based Light-Emitting Devices: Multiphonon Processes, Excited Defects, and Disordered Heterointerfaces

Nanomaterials
We study recombination processes in nitride LEDs emitting from 270 to 540 nm with EQE ranging from 4% to 70%. We found a significant correlation between the LEDs’ electro-optical properties and the degree of nanomaterial disorder (DND) in quantum wells ...
Grigorii Savchenko, Evgeniia Shabunina, Anton Chernyakov, Nadezhda Talnishnikh, Anton Ivanov, Alexandr Abramov, Alexander Zakgeim, Vladimir Kuchinskii, Grigorii Sokolovskii, Nikita Averkiev, Natalia Shmidt   +10 more
doaj   +1 more source

Relativistic study of the nuclear anapole moment effects in diatomic molecules

, 2013
Nuclear-spin-dependent (NSD) parity violating effects are studied for a number of diatomic molecules using relativistic Hartree-Fock and density functional theory and accounting for core polarization effects.
Borschevsky, A., Dzuba, V. A., Flambaum, V. V., Iliaš, M. M., Schwerdtfeger, P.   +4 more
core   +1 more source

Mapping Nanoscale Buckling in Atomically Thin Cr2Ge2Te6

Advanced Functional Materials, EarlyView.
Atomic‐resolution STEM is used to resolve nanoscale buckling in monolayer Cr2Ge2Te₆. A noise‐robust image analysis reconstructs three‐dimensional lattice distortions from single plan‐view images, revealing pronounced defect‐driven nm‐scale out‐of‐plane buckling.
Amy Carl, Nicholas Clark, David G. Hopkinson, Matthew Hamer, Matthew Watson, Laxman Nagireddy, James E. Nunn, Alexei Barinov, Yichao Zou, William Thornley, Casey Cheung, Wendong Wang, Sam Sullivan‐Allsop, Xiao Li, Astrid Weston, Eli G. Castanon, Andrey V Kretinin, Cephise Cacho, Neil R. Wilson, Sarah J. Haigh, Roman Gorbachev   +20 more
wiley   +1 more source

Ab initio calculations of the physical properties of transition metal carbides and nitrides and possible routes to high-Tc

, 2006
Ab initio linear-response calculations are reported of the phonon spectra and the electron-phonon interaction for several transition metal carbides and nitrides in a NaCl-type structure.
A. E. Karakozov, B. M. Klein, C. Y. Allison, E. G. Maksimov, E. G. Maksimov, E. G. Maksimov, E. G. Maksimov, E. G. Maksimov, E. G. Maksimov, E. G. Maksimov, G. L. W. Hart, G. Linker, G. M. Eliashberg, H. G. Smith, J. Chen, J. J. Hopfield, J. M. An, J. Nagamatsu, L. E. Toth, M. V. Magnitskaya, P. B. Allen, P. Blaha, P. Hohenberg, R. Bauer, S. V. Ebert, S. Yu. Savrasov, U. Bart von, W. E. Picket, W. Kohn, Y. Zhoa   +29 more
core   +1 more source

Copper‐Based Crystalline‐Metallic Glass Composite Thin Films: A Novel Material with Enhanced Strength and Thermally Stable Nanotwins

Advanced Functional Materials, EarlyView.
A Cu‐based crystal‐glass composite with high‐density twins is identified by a fast screening technique using combinatorial sputtering together with XRD and nanoindentation mapping. This bamboo‐like structure demonstrates homogenous plastic flow and retains high strength during in situ high temperature tests, up to 1 GPa at 550°C, owing to those ...
Chunhua Tian, Amit Sharma, Krzysztof Wieczerzak, Alexander Groetsch, Manish Jain, Nicolò Maria della Ventura, Remo Widmer, Fedor F. Klimashin, Johann Michler, Jakob Schwiedrzik, Xavier Maeder   +10 more
wiley   +1 more source

Enhanced Dielectric Response and Electric Field-Sensing Properties of PDMS Composites by Graphene/Nitride Heterojunctions: Insights from Experiment and DFT

Crystals
Flexible dielectric composite materials capable of converting power frequency electric fields into measurable electrical signals are of great significance in the field of non-contact electric field sensing in power systems.
Bo Li, Jiao Sun, Yuxing Lei, Tingting Jiang, Haitao Yang   +4 more
doaj   +1 more source

Development of actions on optimization of chemical composition of carburized steel grade 16MnCrS5 to eliminate the causes of the growth of large austenite grains

Литьë и металлургия, 2019
The problem of friction, wear of machine parts and cutting tools, the need to increase the life of machines makes the task of creating new high-performance, energy-saving technologies of hardening one of the main in engineering. In mechanical engineering,
I. A. Kovaleva, I. A. Ovchinnikova, S. V. Stefanovitch   +2 more
doaj   +1 more source

Ab initio calculations of the concentration dependent band gap reduction in dilute nitrides

, 2017
While being of persistent interest for the integration of lattice-matched laser devices with silicon circuits, the electronic structure of dilute nitride III/V-semiconductors has presented a challenge to ab initio computational approaches.
Bannow, Lars C., Fischer, Eric W., Koch, Stephan W., Rosenow, Phil, Stolz, Wolfgang, Tonner, Ralf, Volz, Kerstin   +6 more
core   +1 more source