Laser light scattering technique for non-invasive in situ simultaneous measurements on elastic constants and viscosity coefficients of nematic liquid crystals

TU; Mei; HUANG; Yaoxiong

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Laser light scattering technique for non-invasive in situ simultaneous measurements on elastic constants and viscosity coefficients of nematic liquid crystals

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摘要

The laser light scattering technique for non-invasive in situ simultaneous measurements on elastic constants and viscosity coefficients of nematic liquid crystals is introduced. By measuring the autocorrelation function of the scattered light from nematic liquid crystals at different scattering angles, the splay and twist elastic constants K11 and K22 are obtained from the amplitudes of the autocorrelation function, and the viscosity coefficients of (Splay and (Twist are determined using the viscoelastic ratios K11/( Splay and K22/(Twist from the relaxation parameters of the two modes.

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《中国科学》 |2004年第1期|P.79-85|共7页
作者
TU; Mei; HUANG; Yaoxiong;
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作者单位

Institute;

of;

Biomedical;

Engineering,;

Jinan;

University,;

Guangzhou;

510632,;

China;

Institute;

of;

Biomedical;

Engineering,;

Jinan;

University,;

Guangzhou;

510632,;

China;

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原文格式 PDF
正文语种 CHI
中图分类物理学;
关键词
dynamic; light; scattering,; nematic; liquid; crystal,; elastic; constants,; viscosity; coefficients.;

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Laser light scattering technique for non-invasive in situ simultaneous measurements on elastic constants and viscosity coefficients of nematic liquid crystals

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