Results 41 to 50 of about 7,448,970 (353)

High-Precision Calibration of Phase-Only Spatial Light Modulators

IEEE Photonics Journal, 2022
In the fields of optics and photonics, phase-only spatial light modulators (SLMs) play an increasingly important role in wave-front engineering. However, the SLMs are subject to wavefront distortion arising from the imperfection in the birefringence ...
Yicheng Zhao, Wenxiang Yan, Yuan Gao, Zheng Yuan, Zhi-Cheng Ren, Xi-Lin Wang, Jianping Ding, Hui-Tian Wang   +7 more
doaj   +1 more source

Model-Independent Lens Distortion Correction Based on Sub-Pixel Phase Encoding

Sensors, 2021
Lens distortion can introduce deviations in visual measurement and positioning. The distortion can be minimized by optimizing the lens and selecting high-quality optical glass, but it cannot be completely eliminated.
Pengbo Xiong, Shaokai Wang, Weibo Wang, Qixin Ye, Shujiao Ye   +4 more
doaj   +1 more source

Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : channel scattering function [PDF]

, 2009
The design and operation of transionospheric VHF and UHF radars requires knowledge of amplitude and phase scintillation due to ionospheric scattering.
Cannon, Paul, Cannon, Paul; id_orcid, Groves, Keith, Rogers, Neil, Rogers, NC, Groves, KM   +5 more
core   +1 more source

Effect of connecting shunt capacitor on nonlinear load terminals

, 2003
This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's products or services. Internal or personal use of this material is permitted.
Zobaa, AF, Aziz, MMA, Ibrahim, AM, El-Zahab, EE   +3 more
core   +1 more source

Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : coherence times, coherence bandwidths and S4 [PDF]

, 2009
Irregularities in the electron density of the ionosphere cause phase and amplitude scintillation on transionospheric VHF and UHF radar signals, particularly at lower radio frequencies.
Cannon, Paul, Cannon, Paul; id_orcid, Groves, Keith, Rogers, Neil, Rogers, NC, Groves, KM   +5 more
core   +1 more source

Multibaseline Gradient Ambiguity Resolution To Support Minimum Cost Flow Phase Unwrapping

, 2010
The TanDEM-X Mission has as primary objective to generate a high resolution global Digital Elevation Model. This paper proposes a new method for multibaseline Phase Unwrapping which is the critical point of this generation.
Marie Lachaise, Richard Bamler, Lachaise, Marie, Bamler, Richard, Fernando Rodriguez Gonzalez, Rodriguez Gonzalez, Fernando   +5 more
core   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Thermo-mechanical analysis of wire and arc additive layer manufacturing process on large multi-layer parts [PDF]

, 2011
Wire and Arc Additive Layer Manufacturing (WAALM) is gaining increasing popularity as the process allows the production of large custom-made metal workpieces with high deposition rates.
Ganguly S, F. Wang, Wang, Fude, Sequeira Almeida, Pedro M., Wang F, J. Mehnen, S. Ganguly, Ganguly, Supriyo, Williams, Stewart W., Ding J, Colegrove, Paul A., Mehnen J, J. Ding, Almeida PMS, Mehnen, Jorn, Colegrove P, P. Colegrove, S. Williams, Ding, Jialuo, Williams S, P.M. Sequeira Almeida   +20 more
core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Coupling and decoupling of spin crossover and ferroelastic distortion: Unsymmetric hysteresis loop, phase diagram, and sequence of phases

, 2021
International audienceSpin-transition materials can exhibit thermal hysteresis due to cooperative elastic interactions in between active molecular sites.
Collet, Eric, Azzolina, Giovanni
core   +1 more source