Physical aging in a hyperquenched glass
We report experimental data on the enthalpy relaxation of a hyperquenched silicate glass subjected to long-time aging (annealing) below the glass-transition temperature (Tg). The relaxation of a hyper...
We report experimental data on the enthalpy relaxation of a hyperquenched silicate glass subjected to long-time aging (annealing) below the glass-transition temperature (Tg). The relaxation of a hyper...
Theoretical evidence for the kick-out mechanism for B diffusion in SiC
In this letter, we analyze by means of first-principles electronic structure calculations the diffusion of B impurities in 3C-SiC. We find, through molecular dynamics, that substitutional B at a Si la...
In this letter, we analyze by means of first-principles electronic structure calculations the diffusion of B impurities in 3C-SiC. We find, through molecular dynamics, that substitutional B at a Si la...
Virtual surfaces, director domains, and the Fréedericksz transition in polymer-stabilized nematic liquid crystals
Appl. Phys. Lett. 81, 2986 (2002); doi:10.1063/1.1515136
Issue Date: 14 October 2002
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The critical field of the Fréedericksz transition and switching dynamics are investigated for polymer-stabilized nematic liquid crystals as a function of polymer concentration. A simple phenomenological model is proposed to describe the observed critical field and dynamic response time behaviors as a function of concentration. In this model, the polymer fibrils form director domains, which are bounded by "virtual surfaces" with a finite anchoring energy. ©2002 American Institute of Physics.
| History: | Received 29 May 2002; accepted 21 August 2002 |
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http://link.aip.org/link/?APPLAB/81/2986/1 |
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KEYWORDS and PACS
polymer dispersed liquid crystals,
nematic liquid crystals,
liquid crystal phase transformations,
molecular orientation
- 61.30.Gd
Structure of solids and liquids; crystallography Liquid crystals Orientational order of liquid crystals; electric and magnetic field effects on order - 64.70.Md
Equations of state, phase equilibria, and phase transitions Specific phase transitions Transitions in liquid crystals - 61.30.Eb
Structure of solids and liquids; crystallography Liquid crystals Experimental determinations of smectic, nematic, cholesteric, and other structures - 42.70.Df
Optics Optical materials Liquid crystals - YEAR: 2002
RELATED DATABASES
PUBLICATION DATA
0003-6951 (print)
1077-3118 (online)
AIP
REFERENCES (9)
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