Results 91 to 100 of about 135,378 (342)
Advanced Optical Materials, EarlyView.Photochromic compounds are versatile ingredients for the development of Chemical AI. When they are embedded in a tight microenvironment, they become Markov blankets. They are also valuable for processing Boolean and Fuzzy logic. They contribute to neuromorphic engineering in wetware based on opto‐chemical signals exchanged with oscillatory chemical ...
Pier Luigi Gentili
wiley +1 more source
Stepless shape morphing polymer
SmartMat, Volume 4, Issue 1, February 2023., 2023 Reversible stepless discretionary morphing polymer is produced by simply training commercial ultrahigh molecular weight polyethylene (UHMWPE) via thermal treatment associated stretching. The key issue is that the crystals of UHMWPE memorize lots of temporary shapes as independent switching phases.
Lei Min +6 more
wiley +1 more source
Open Astronomy, 2011 Multiple images of quasars formed by gravitational lensing are typically seen through the lensing galaxy. The granulation of the galaxy in stars or other compact objects induces local (‘microscopic’) but strong fluctuations in the gravitational potential
Gradolph Teresa Mediavilla +2 more
doaj +1 more source
Resolving the discrepancy between X-ray and gravitational lensing mass measurements for clusters of galaxies [PDF]
, 1997 We present a detailed comparison of mass measurements for clusters of galaxies using ASCA and ROSAT X-ray data and constraints from strong and weak gravitational lensing.
Allen, S. W.
core +2 more sources
Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens
Advanced Photonics Research, EarlyView.This article uses an optical lens to emulate the gravitational lensing effect and observe the Einstein ring (ER) patterns. The symmetry‐breaking ER, i.e., Einstein cross, is observed utilizing a rotation‐symmetry‐breaking hemi‐ellipsoid lens. Deformed Einstein cross patterns induced by noncollinearly alignment of the light source–lens–observer are ...
Jun‐Liang Duan +5 more
wiley +1 more source
Weak Gravitational Lensing of the CMB [PDF]
Phys.Rept. 429 (2006) 1-65, 2006 Weak gravitational lensing has several important effects on the cosmic microwave background (CMB): it changes the CMB power spectra, induces non-Gaussianities, and generates a B-mode polarization signal that is an important source of confusion for the signal from primordial gravitational waves.
arxiv +1 more source
, 1999 The purpose of these lecture notes is to describe the gravitational lens effects in different astrophysical contexts. These notes are voluntarily focused on the fundamental mechanisms and the basic concepts that are useful to describe these effects. The observational consequences are presented in more details in accompanying notes by Y. Mellier.
openaire +2 more sources
Advanced Photonics Research, EarlyView.This work presents a systematic review of atmospheric turbulence fundamentals, including theoretical formulations and adaptive optics‐based mitigation strategies. This includes an in‐depth examination of the devices, theories, and methodologies associated with traditional correction approaches.
Qinghui Liu +5 more
wiley +1 more source
Weak gravitational lensing with deimos [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 7 pages, 3 figures, fixed typo in Eq ...
Melchior, P. +3 more
openaire +5 more sources
Rough and Tough: How Particle Surface Roughness Affects Liquid Marble Formation and Stability
Advanced Science, EarlyView.This study investigates the influence of particle surface roughness on the formation and stability of liquid marbles using well‐defined colloidal supraparticles as model systems. Increasing surface roughness enhances the interfacial contact angle, improves mechanical stability by increasing deformation resistance upon impact, and enables liquid marble ...
Umair Sultan +4 more
wiley +1 more source