Results 21 to 30 of about 20,337 (305)
Spreading properties of a multi-Gaussian Schell-model vortex beam in slanted atmospheric turbulence
, 2020 The cross-spectral density function of a multi-Gaussian Schell-model vortex (MGSMV) beam propagating through slanted atmospheric turbulence was derived, and the influences of the MGSMV beam parameter and slanted atmospheric turbulence on the spreading ...
Song, Yansong +3 more
core +1 more source
Fiber Lens Based Optical Antenna Design for OWC With Full Beam Coverage
IEEE Photonics Journal, 2021 In infrared optical wireless communications, narrow beams require the perfect calibration of the base station (BS) and user terminal (UT), which cannot support multiple moving users. This paper proposes a fiber lens based optical antenna, which employs a
Chen Sun +3 more
doaj +1 more source
Journal of Low Frequency Noise, Vibration and Active Control, 2019 Since the doubly clamped beam-type N/MEMS subjected to the van der Waals attraction is transformed into a mathematical model through Galerkin method, which is a nonlinear differential equation, the spreading residue harmonic balance method is introduced ...
YH Qian, JL Pan, Y Qiang, JS Wang
doaj +1 more source
The Spreading and Wander of a Gaussian Schell-Model Beam Through Oceanic Turbulence
PhotonicsIn this paper, we investigate the propagation properties of a partially coherent Gaussian Schell-model (GSM) beam by effective beam parameters in oceanic turbulence.
Ningjing Xiang
doaj +1 more source
Behaviour of reinforcement in drop tower beam tests [PDF]
MATEC Web of Conferences, 2020 Drop tower tests help to gain understanding about the general behaviour of reinforced concrete members under impact loading and to analyse strains and strain rates occurring within their reinforcement.
Leicht Lena +3 more
doaj +1 more source
, 2001 Abstract : My long-term goal is to support the work of ocean optics experimentalists by developing analytical and numerical methods for solving forward and inverse radiative transfer problems. This research contributes to the technology for underwater imaging and for characterizing the optical properties of different waters.
openaire +1 more source
PhotonicsDouble-ring perfect vortex beams (DR–PVBs) have attracted increasing attention due to their unique characteristics of carrying independent information channels and exhibiting higher security and stability during propagation.
Xiang Xu +3 more
doaj +1 more source
FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei +3 more
wiley +1 more source
Frontiers in Physics, 2021 With an exponential increase in the use of smart devices and with increasing demand for high-speed data applications, the Radio Frequency and Microwave links will find themselves almost incapable of meeting this deficit.
Harjeevan Singh +5 more
doaj +1 more source
FEBS Open Bio, EarlyView.This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill +4 more
wiley +1 more source