Results 41 to 50 of about 78,994 (125)

Mathematics and liquid crystals [PDF]

open access: yes, 2016
A review is given of some mathematical contributions, ideas and questions concerning liquid crystals.
arxiv   +1 more source

Effect of the sintering temperature on microstructure and optical properties of reactive sintered YAG:Sm3+ ceramics

open access: yesOptical Materials: X, 2022
YAG:Sm3+ (5 аt.%) optical ceramics were obtained by the solid-state reactive sintering in the 1700–1800°C temperature range. The effect of the sintering temperature on the microstructure, phase composition and optical properties of YAG:Sm3+ ceramics has ...
A.D. Timoshenko   +10 more
doaj  

Advances in Single-Crystal Fibers and Thin Rods Grown by Laser Heated Pedestal Growth

open access: yesCrystals, 2017
Single-crystal fibers are an intermediate between laser crystals and doped glass fibers. They have the advantages of both guiding laser light and matching the efficiencies found in bulk crystals, which is making them ideal candidates for high-power laser
Gisele Maxwell   +3 more
doaj   +1 more source

Large Angle Forward Diffraction by Chiral Liquid Crystal Gratings with Inclined Helical Axis

open access: yesCrystals, 2020
A layer of chiral liquid crystal (CLC) with a photonic bandgap in the visible range has excellent reflective properties. Recently, two director configurations have been proposed in the literature for CLC between two substrates with periodic photo ...
Migle Stebryte   +4 more
doaj   +1 more source

Paraboloidal crystals [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2007
2 ...
Bowick, Mark, Giomi, Luca
openaire   +3 more sources

Fabrication of Sio2-based microcantilevers by anisotropic chemical etching of (100) single crystal Si [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
The undercutting process of thermal SiO2 microcantilevers with different orientations on (100) Si wafer was studied. The silicon substrate was removed by anisotropic chemical etching with a 25 wt. % aqueous solution of TMAH or a 30 wt.
Jović Vesna   +3 more
doaj   +1 more source

A superelastochromic crystal [PDF]

open access: yesNature Communications, 2020
AbstractChromism—color changes by external stimuli—has been intensively studied to develop smart materials because of easily detectability of the stimuli by eye or common spectroscopy as color changes. Luminescent chromism has particularly attracted research interest because of its high sensitivity. The color changes typically proceed in a one-way, two-
Toshiki Mutai   +5 more
openaire   +3 more sources

Effect of Block Asymmetry on the Crystallization of Double Crystalline Diblock Copolymers [PDF]

open access: yes, 2014
Monte Carlo simulation on the crystallization of double crystalline diblock copolymer unravels an intrinsic relationship between block asymmetry and crystallization behaviour. We model crystalline A-B diblock copolymer, wherein the melting temperature of A-block is higher than that of the B-block.
arxiv   +1 more source

Crystal structures and Hirshfeld analysis of 4,6-dibromoindolenine and its quaternized salt

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2021
4,6-Dibromo-2,3,3-trimethyl-3H-indole, C11H11Br2N, exists as a neutral molecule in the asymmetric unit. The asymmetric unit of 4,6-dibromo-2,3,3-trimethyl-3H-indol-1-ium iodide, C12H14Br2N+·I−, contains one organic cation and one iodine anion.
Irina S. Konovalova   +4 more
doaj   +1 more source

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