Results 61 to 70 of about 52,163 (277)

Nuclear Spin‐Free 70Ge/28Si70Ge Quantum Well Heterostructures Grown on Industrial SiGe‐Buffered Wafers

Advanced Science, EarlyView.
Hyperfine coupling to 29Si$^{29}{\rm Si}$ and 73Ge$^{73}{\rm Ge}$ nuclear spins limits hole spin‐qubit coherence in Ge heterostructures. We demonstrate device‐grade, nuclear‐spin‐free 70Ge$^{70}{\rm Ge}$/28Si70Ge$^{28}{\rm Si}^{70}{\rm Ge}$ quantum wells grown on industrial SiGe buffers with minimal use of enriched precursors.
Patrick Daoust, Nicolas Rotaru, Debojyoti Biswas, Sebastian Koelling, Eloise Rahier, Alexis Dubé‐Valade, Patrick Del Vecchio, Marcus S. Edwards, Mukhlasur Tanvir, Ebrahim Sajadi, Joe Salfi, Oussama Moutanabbir   +11 more
wiley   +1 more source

Niobium based intermetallics as a source of high-current/high-magnetic field superconductors

, 2001
The article is focused on low temperature intermetallic A15 superconducting wires development for Nuclear Magnetic Resonance, NMR, and Nuclear Magnetic Imaging, MRI, magnets and also on cryogen-free magnets.
B.A. Glowacki, Chen, D. Fray, Dukhovnii, Evetts, G. Chen, Glowacki, Glowacki, Hillman, Itoh, Kikuchi, Kosuge, Kosuge, M. Majoros, Matsumoto, Matthias, Osborne, Pickus, Pippard, Scanlan, Takeuchi, Takeuchi, Takeuchi, Tchikawa, Thieme, Togano, Togano, Wilson, Wordenweber, X.-Y. Yan, Y. Shi, Yamada   +31 more
core   +1 more source

Structural and kinetic investigation of the hydride composite Ca(BH4)2 + MgH2 system doped with NbF5 for solid-state hydrogen storage.

Physical Chemistry, Chemical Physics - PCCP, 2015
Designing safe, compact and high capacity hydrogen storage systems is the key step towards introducing a pollutant free hydrogen technology into a broad field of applications. Due to the chemical bonds of hydrogen-metal atoms, metal hydrides provide high
F. Karimi, P. K. Pranzas, C. Pistidda, J. Puszkiel, C. Milanese, U. Vainio, M. Paskevicius, T. Emmler, A. Santoru, Rapee Utke, M. Tolkiehn, C. Minella, A. Chaudhary, Stefan Boerries, C. Buckley, S. Enzo, A. Schreyer, T. Klassen, M. Dornheim   +18 more
semanticscholar   +1 more source

Reactivity of magnesium borohydride – Metal hydride composites, γ-Mg(BH4)2-MHx, M = Li, Na, Mg, Ca [PDF]

Journal of Alloys and Compounds, 2019
Abstract The reactivity and thermal decomposition of γ-Mg(BH4)2-MHx, M = Li, Na, Mg, and Ca composites has been examined with the objective of studying the hydrogen storage capability of the composites. The samples were prepared by manual grinding γ-Mg(BH4)2 with a metal hydride to obtain homogenous mixtures.
Elisabeth Grube, Steffen R.H. Jensen, Ulla Gro Nielsen, Torben R. Jensen   +3 more
openaire   +3 more sources

Energy‐Resolved Femtosecond Dynamics of Plasmon‐Induced Hole Injection at Au/GaN Heterointerfaces

Advanced Science, EarlyView.
We reveal the spectral signature of ultrafast nonthermal hot‐hole transfer at plasmonic heterointerfaces, which reshapes hot‐carrier relaxation dynamics and significantly enhances hydrogen evolution, providing a mechanistic basis for optimizing hot‐carrier utilization in photocatalysis.
Yuying Gao, Yuxin Xie, Jonathan Diederich, Christian Höhn, Klaus Schwarzburg, Fengtao Fan, Can Li, Roel van de Krol, Dennis Friedrich   +8 more
wiley   +1 more source

The Far Side of Carboranes: Anticancer Active Monocations and Ambiently Stable Dications

Angewandte Chemie, EarlyView.
This work describes the synthesis of bench‐stable dicationic carboranes. Their enhanced electrophilicity is documented by opening the clusters with weak nucleophiles or dihydrogen. The surprising stability of positively charged carboranes in water enabled a study of their in vitro antiproliferative activity, which surpassed the effects of doxorubicin ...
Vlastimil Němec, Josef Holub, Maksim A. Samsonov, Zdeňka Růžičková, Josef Cvačka, Ján Vančo, Zdeněk Trávníček, Jan Belza, Zdeněk Dvořák, Jan Vrána, Aleš Růžička   +10 more
wiley   +2 more sources

Unraveling Hydride‐Driven Multiphasic Reduction Toward Tunable Germanium Structures for Lithium‐Ion Batteries

Advanced Science, EarlyView.
The sodium hydride (NaH)‐mediated reduction of germanium dioxide yields distinct Ge structures depending on the amount of reductant, revealing the dual roles of NaH in the reduction pathways. The synthesized Ge under off‐stoichiometric conditions exhibits a porous morphology and reduced crystallinity, which effectively mitigates volume expansion during
Gijung Lee, Jieun Kang, Jin Yong Kwon, Woori Bae, Noh‐Moon Lee, Byeongho Park, Yujin Park, Changwan Sun, Jihee Yoon, Hyungmin Park, Bonjae Koo, Jin Woo Yi, Jaegeon Ryu   +12 more
wiley   +1 more source

Hyperpolarization of Molecular Deuterium

Angewandte Chemie, EarlyView.
Hyperpolarized molecular deuterium is generated and detected using a nonhydrogenative SABRE catalyst with nicotinamide. The resonance shows a strongly enhanced partially negative line, substrate‐dependent and sensitive to transient intermediates.
Theresa L. K. Hune, Anakin Aden, Julius F. Matz, Denis Moll, Ilya Kuprov, Stefan Glöggler   +5 more
wiley   +2 more sources

An interatomic potential for saturated hydrocarbons based on the modified embedded-atom method

, 2014
In this work, we developed an interatomic potential for saturated hydrocarbons using the modified embedded-atom method (MEAM), a reactive semi-empirical many-body potential based on density functional theory and pair potentials.
Baskes, M. I., Gwaltney, S. R., Horstemeyer, M. F., Nouranian, S., Tschopp, M. A.   +4 more
core   +1 more source

Ambient Hydrocarbonylation of Olefins Enabled by Visible‐Light

Advanced Science, EarlyView.
A novel photo‐induced methodology for hydrocarbonylation has been established, resolving the inherent conflicts between competitive olefin and CO insertion in traditional methods that necessitate harsh conditions. Accordingly, an efficient and versatile hydrocarbonylation of olefins enabled by visible‐light irradiation under ambient conditions has been
Hongchi Liu, Tianze Zhang, Hanmin Huang
wiley   +1 more source