Results 121 to 130 of about 20,207 (328)
Lightning in the Anvils of Supercell Thunderstorms
Monthly Weather Review, 2012 AbstractThis study uses data from the Oklahoma Lightning Mapping Array (OK-LMA), the National Lightning Detection Network, and the Norman, Oklahoma (KOUN), prototype Weather Surveillance Radar-1988 Doppler (WSR-88D) radar to examine the evolution and structure of lightning in the anvils of supercell storms as they relate to storm dynamics and ...
Stephanie A. Weiss +2 more
openaire +1 more source
Advanced Science, EarlyView.This work visualizes local variations in luminescence and relates them to nanoscale chemical inhomogeneities in single InxGa1−xN quantum wells. We demonstrate that the elemental segregation is only inherent to quantum wells with high indium content. Density functional theory shows this to be the result of strain‐induced phase stabilization, explaining ...
Jing‐Yang Chung +12 more
wiley +1 more source
Elimination of unoccupied state summations in it ab initio self-energy calculations for large supercells [PDF]
, 1997 We present a new method for the computation of self-energy corrections in large supercells. It eliminates the explicit summation over unoccupied states, and uses an iterative scheme based on an expansion of the Green's function around a set of reference ...
Reining, L. +5 more
core +1 more source
Electronic Structure of ZnTS Crystals Modified by the Zn-S Swap Disorder
Журнал нано- та електронної фізикиThis work is devoted to the study of changes in the electronic structure of ZnS crystals in the simultaneous presence of two types of defects. The first of them is an impurity of a transition 3d element - Mn or Fe. These impurities replace the Zn atom in
S.V. Syrotyuk +3 more
doaj +1 more source
Anisotropic Memristive Switching in NbOCl2 Enabled by Directional Oxygen Ion Migration
Advanced Science, EarlyView.This study investigates strongly orientation‐dependent memristive switching in anisotropic NbOCl2, observed exclusively along the in‐plane c‐axis. The switching originates from direction‐selective oxygen‐ion migration and vacancy propagation that modulate the Pd/NbOCl2 Schottky barrier, enabling short‐term plasticity.
Caokun Wang +6 more
wiley +1 more source
An analysis of observed cold pools in VORTEX-SE supercells and quasi-linear convective systems [PDF]
, 2019 Many past severe weather field campaigns have focused on increasing our understanding of supercell dynamics within the traditional high CAPE and large vertical wind shear environments in the Great Plains of the United States.
Mcdonald, Jessica M.
core
Experimental evidence of guided-resonances in photonic crystals with aperiodically ordered supercells [PDF]
, 2010 We report on the first experimental evidence of guided resonances (GRs) in photonic crystal slabs based on aperiodically ordered supercells. Using Ammann-Beenker (quasiperiodic, eightfold symmetric) tiling geometry, we present our study on the ...
Stefania Campopiano +17 more
core +1 more source
npj Computational MaterialsVacancy-ordered double perovskites (VODPs) are promising alternatives to three-dimensional lead halide perovskites for optoelectronic applications. Mixing these materials creates a vast compositional space for tunable properties but complicates efficient
Fan Zhang +4 more
doaj +1 more source
Advanced Science, EarlyView.Oxygen vacancy migration is a key degradation mechanism for the majority of MLCCs. There are limitations with spatially identifying regions of a capacitor that have degraded due to oxygen vacancy migration. This work showcases ultrasonic attenuation as a non‐electrical and nondestructive technique of identifying oxygen vacancy degraded regions of an ...
Haley N. Jones +3 more
wiley +1 more source