Results 71 to 80 of about 131,690 (295)
, 2009 We report observations of the gyrotropic change in magnetic susceptibility of the Fe$^{3+}$ electron paramagnetic resonance at 12.037GHz (between spin states $|1/2>$ and $|3/2>$) in sapphire with respect to applied magnetic field.
A. G. Gurevich +10 more
core +3 more sources
Advanced Materials, EarlyView.Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje +7 more
wiley +1 more source
Remote temperature mapping of high-power InGaN/GaN MQW flip-chip design LEDs [PDF]
, 2005 We report on the study of heat 2D-distribution in InGaN LEDs with the stress made on local device overheating and temperature gradients inside the structure.
Malyutenko, O. Y. +3 more
core
Investigation of a direction sensitive sapphire detector stack at the 5 GeV electron beam at DESY-II
, 2015 Extremely radiation hard sensors are needed in particle physics experiments to instrument the region near the beam pipe. Examples are beam halo and beam loss monitors at the Large Hadron Collider, FLASH or XFEL.
Afanaciev, K. +8 more
core +1 more source
Epitaxial graphene prepared by chemical vapor deposition on single crystal thin iridium films on sapphire [PDF]
, 2011 Uniform single layer graphene was grown on single-crystal Ir films a few nanometers thick which were prepared by pulsed laser deposition on sapphire wafers.
Bayle-Guillemaud, Pascale +6 more
core +4 more sources
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
Sensors, 2020 In this work, we present a two-dimensional Finite Element Method (2D-FEM) model implemented on a commercial software, COMSOL Multiphysics, that is used to predict the high temperature behavior of surface acoustic wave sensors based on layered structures.
Jean Claude Asseko Ondo +5 more
doaj +1 more source
Advanced Materials, EarlyView.This table of contents illustrates that the mechanism for mitigating Sr segregation depends strongly on the chemistry of the coating layer. HfO2 electrostatically stabilizes the surface by lowering the surface oxygen vacancies, which serve as the driving force for Sr migration. On the other hand, Al2O3 and Fe2O3 react with segregated Sr to form Sr‐Al‐O
Jongsu Seo +8 more
wiley +1 more source
Laser-Inscribed Stress-Induced Birefringence of Sapphire
Nanomaterials, 2019 Birefringence of 3 × 10 − 3 is demonstrated inside cross-sectional regions of 100 μ m, inscribed by axially stretched Bessel-beam-like fs-laser pulses along the c-axis inside sapphire.
Hua Fan +9 more
doaj +1 more source
AFM research of morphology of surface layer sapphire after plasma surface treatment [PDF]
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017 An AFM study of the sapphire surface after plasma treatment was carried out. The AFM images of the sapphire surface in the initial state and after plasma treatment are obtained.
R.R. Nagaplezheva +2 more
doaj +1 more source