Results 41 to 50 of about 13,953,648 (316)

Antireflection coated semiconductor laser amplifier for Bose-Einstein condensation experiments

open access: yesAIP Advances, 2018
We present a slave laser highly suitable for the preparation and detection of 87Rb Bose-Einstein condensates (BEC). A highly anti-reflection coated laser diode serves as an optical amplifier, which requires neither active temperature stabilization nor ...
Saurabh Pandey   +7 more
doaj   +1 more source

Electronic Structure of GaAs [PDF]

open access: yesPhysical Review Letters, 1974
Using a nonlocal pseudopotential, including spin-orbit interactions, we have calculated a band structure for GaAs which is in excellent agreement with electroreflectance, wave-length-modulation, and photoemission experimental results. As in a calculation by Pandey and Phillips, an order of magnitude in accuracy has been gained over existing band ...
Chelikowsky, James R., Cohen, Marvin L.
openaire   +2 more sources

Multi-Field-Coupled Model and Solution of Active Electronically Scanned Array Antenna Based on Model Reconstruction

open access: yesInternational Journal of Antennas and Propagation, 2018
Active electronically scanned array antenna (AESA antenna) is capable of controlling the radiation pattern by controlling the feeding phase of the radiating elements. It has good performance and plays an important role in radar systems.
Dan Han   +6 more
doaj   +1 more source

Effect of Ground Plane Deformation on Electrical Performance of Air Microstrip Antennas

open access: yesInternational Journal of Antennas and Propagation, 2020
This paper covers the variation of electrical performance of air microstrip antennas due to its ground plane deformation. A typical sinusoidal function is utilized to characterize the shape of deformation, based on which different shapes of ground plane ...
Wei Wang   +4 more
doaj   +1 more source

Improved Adaptive Multi-Objective Particle Swarm Optimization of Sensor Layout for Shape Sensing with Inverse Finite Element Method

open access: yesSensors, 2022
The inverse finite element method (iFEM) is one of the most effective deformation reconstruction techniques for shape sensing, which is widely applied in structural health monitoring. The distribution of strain sensors affects the reconstruction accuracy
Xiaohan Li   +3 more
doaj   +1 more source

On the Structure of the Electron

open access: yesZeitschrift für Naturforschung A, 2003
Usually the electron is described as a mathematical point with charge, mass, spin angular momentum, and electromagnetic field. Because of the unbounded energies this causes mathematical difficulties [1]. These can be avoided by considering a finite radius.
openaire   +2 more sources

A Large-Scale Sensor Layout Optimization Algorithm for Improving the Accuracy of Inverse Finite Element Method

open access: yesSensors, 2023
The inverse finite element method (iFEM) based on fiber grating sensors has been demonstrated as a shape sensing method for health monitoring of large and complex engineering structures.
Zhenyi Zhao   +3 more
doaj   +1 more source

Applying laser induced breakdown spectroscopy (LIBS) and elemental imaging on marine shells for archaeological and environmental research

open access: yesScientific Reports, 2023
Using LIBS for the analysis of archaeological and geological marine mollusc shells is a growing research area that relies on customised instrumentation and specific workflows that can accommodate the variety and precision of the required sampling ...
Niklas Hausmann   +5 more
doaj   +1 more source

Electronic structure of MnSb [PDF]

open access: yesPhysical Review B, 1985
Self-consistent, spin-polarized energy-band calculations have been performed for MnSb, for both ferromagnetic and antiferromagnetic spin alignments. For ferromagnetic MnSb we find a 3d5.5 configuration on the Mn atom, with a magnetic moment of 3.3μB on the Mn sites, and –0.06μB on the Sb sites. The charge transfer of Mn to Sb is very small.
Coehoorn, R., Haas, C., Groot, R.A. de
openaire   +3 more sources

Electronic transport through ordered and disordered graphene grain boundaries [PDF]

open access: yes, 2013
The evolution of electronic wave packets (WPs) through grain boundaries (GBs) of various structures in graphene was investigated by the numerical solution of the time-dependent Schrödinger equation. WPs were injected from a simulated STM tip placed above
Kim, Yong-Sung   +12 more
core   +1 more source

Home - About - Disclaimer - Privacy