Results 311 to 320 of about 4,473,381 (352)
Some of the next articles are maybe not open access.

Coupled Ferroelectricity and Optical Activity in Optically Active Ferroelectrics

The Journal of Physical Chemistry Letters
Ferroelectricity was initially discovered in 1921 in Rochelle salt (potassium sodium tartrate tetrahydrate), a chiral compound containing a chiral unit. However, the inherent relationship between coupled ferroelectricity and optical activity in chiral ferroelectrics derived from achiral units, as well as in polar ferroelectrics, remains insufficiently ...
Xiang-Bin Han, Wen Zhang
openaire   +2 more sources

Parity and Optical Activity

Nature, 1972
Simple pictorial arguments can demonstrate that the natural and Faraday rotation experiments conserve parity and time-reversal invariance. The method can be used to predict possible new effects without recourse to mathematical theories.
openaire   +3 more sources

Immersion-Triggered Active Switch for Spin-Decoupled Meta-Optics Multi-Display.

Small, 2022
Meta-optics exhibits many promising applications in various fields of optical displays, imaging, and information encryption. However, heading towards next-generation intelligent displays, its broad implementation is critically restricted by the lack of ...
Zhe Li   +3 more
semanticscholar   +1 more source

Optical activity from racemates [PDF]

open access: possibleNature Materials, 2016
International ...
Richard P. Van Duyne   +4 more
openaire   +3 more sources

HYPATIA and STOIC: an active optics system for a large space telescope

Astronomical Telescopes + Instrumentation, 2016
The next generation of UVOIR space telescopes will be required to provide excellent wavefront control despite perturbations due to thermal changes, gravity release and vibrations.
N. Devaney   +5 more
semanticscholar   +1 more source

Active optics system for the 4m telescope of the Eastern Anatolia Observatory (DAG)

Astronomical Telescopes + Instrumentation, 2016
An active optics system is being developed by AMOS for the new 4m-class telescope for the Turkish Eastern Anatolia Observatory (DAG). It consists in (a) an adjustable support for the primary mirror and (b) two hexapods supporting M2 and M3.
G. Lousberg   +6 more
semanticscholar   +1 more source

The GMT active optics control strategies

Astronomical Telescopes + Instrumentation, 2016
The Giant Magellan Telescope (GMT) has a Gregorian 25.4-meter diameter primary mirror composed of seven 8.4-meter diameter segments. The secondary mirror consists of seven 1.1-meter diameter segments. In the active and adaptive operation modes of the GMT,
R. Conan   +4 more
semanticscholar   +1 more source

Experiments on the Origins of Optical Activity

Origins of Life, 1974
Two recent reports claim that (1) aqueous L-aspartic acid polymerizes faster than D-Asp in the presence of kaolin at 90 degrees, and (2) L-phenylalanine is adsorbed by kaolin more extensively than D-Phe at pH 4(the reverse being true at pH2). The novelty of these observations and their potential significance for the origin of optical activity has ...
Jose J. Flores   +3 more
openaire   +3 more sources

Focal-plane wavefront sensing for active optics in the VST based on an analytical optical aberration model

Astronomical Telescopes + Instrumentation, 2016
We study a novel focal plane wavefront sensing and active optics control scheme at the VST on Cerro Paranal, an f/5.5 survey telescope with a 1x1 degree field of view and a 2.6m primary mirror.
R. Holzlöhner   +5 more
semanticscholar   +1 more source

Optical control of antibacterial activity

Nature Chemistry, 2013
Bacterial resistance is a major problem in the modern world, stemming in part from the build-up of antibiotics in the environment. Novel molecular approaches that enable an externally triggered increase in antibiotic activity with high spatiotemporal resolution and auto-inactivation are highly desirable.
Velema   +6 more
openaire   +3 more sources

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