Results 11 to 20 of about 36,997 (297)
IEEE Access, 2019 A simple adaptive 1-D frequency-scanning method is proposed for radiative wireless power transfer (WPT) systems in low-power wireless sensor networks (WSNs).
Miguel Poveda-Garcia +4 more
doaj +3 more sources
IEEE Journal of MicrowavesKey technologies and system components for a power beaming concept, based on a high-power mm-wave transmitter and thermomechanical conversion of the beamed energy to electrical power at the receiving station, are described.
Anthony E. Baros +9 more
doaj +3 more sources
74.7% Efficient GaAs-Based Laser Power Converters at 808 nm at 150 K
Photonics, 2022 High-efficiency multijunction laser power converters are demonstrated for low temperature applications with an optical input at 808 nm. The photovoltaic power converting III-V semiconductor devices are designed with GaAs absorbing layers, here with 5 ...
Simon Fafard, Denis P. Masson
doaj +1 more source
Adjoint-optimized nanoscale light extractor for nitrogen-vacancy centers in diamond
Nanophotonics, 2020 We designed a nanoscale light extractor (NLE) for the efficient outcoupling and beaming of broadband light emitted by shallow, negatively charged nitrogen-vacancy (NV) centers in bulk diamond.
Wambold Raymond A. +9 more
doaj +1 more source
Light-curve modelling constraints on the obliquities and aspect angles of the young Fermi pulsars [PDF]
, 2014 In more than four years of observation the Large Area Telescope on board the Fermi satellite has identified pulsed $\gamma$-ray emission from more than 80 young pulsars, providing light curves with high statistics.
Caraveo, P. A. +6 more
core +5 more sources
Large-scale fluctuations in the cosmic ionising background: the impact of beamed source emission [PDF]
, 2017 When modelling the ionisation of gas in the intergalactic medium after reionisation, it is standard practice to assume a uniform radiation background.
Pontzen, Andrew, Suarez, Teresita
core +2 more sources
IEEE Access, 2021 This paper presents a large, modular X-band rectenna array developed for the planned demonstration of a space-to-Earth power beaming link operating at 10 GHz. The array is composed of 16 tiles assembled into a panel greater than 1 m x 1 m in size.
Brian B. Tierney +3 more
doaj +1 more source
The Radio Structure of the γ-Ray Narrow-line Seyfert 1 Galaxy SDSS J211852.96-073227.5
The Astrophysical Journal, 2023 The γ -ray narrow-line Seyfert 1 (NLS1) galaxies can be considered to be the third class of γ -ray active galactic nuclei possessing relativistic jets. In this paper, we present multi-band high-resolution Very Long Baseline Array (VLBA) images of the γ ...
Xi Shao +6 more
doaj +1 more source
Afterglow Light Curve Modulated by a Highly Magnetized Millisecond Pulsar [PDF]
, 2001 We investigate consequences of a continuously energy-injecting central engine of gamma-ray burst (GRB) afterglow emission, assuming that a highly magnetized pulsar is left beaming in the core of a GRB progenitor.
Berger +53 more
core +2 more sources
Gamma-ray burst beaming: a universal configuration with a standard energy reservoir? [PDF]
, 2001 We consider a gamma-ray burst (GRB) model based on an anisotropic fireball with an axisymmetric power-law distribution of the energy per solid angle with index -k, and allow for the observer's viewing direction being at an arbitrary angle with respect to
Bing Zhang, Paczynski B., Peter Meszaros
core +2 more sources