Ultrasonic studies of structural transformations and phase transitions in liquid crystal emulsions

被引:10
作者
Maksimochkin, G. I. [1 ]
Pasechnik, S. V. [1 ]
Maksimochkin, A. G. [1 ]
机构
[1] Moscow State Univ Instrument Engn & Comp Sci, Moscow 107996, Russia
关键词
ACOUSTICAL PARAMETERS;
D O I
10.1134/S1063771011020126
中图分类号
O42 [声学];
学科分类号
070206 [声学];
摘要
The propagation velocity and absorption coefficient of ultrasound in the range of 0.6-150 MHz in a series of liquid crystal emulsions prepared on the basis of thermotropic liquid crystals and isotropic liquids were studied. The dispersity parameters of emulsions were controlled by polarization microscopy and dynamic light scattering. Features of the temperature dependences of the acoustic parameters of emulsions due to the structural transformations and nematic-isotropic liquid transition in disperse and dispersion phases of liquid crystal emulsions were established.
引用
收藏
页码:264 / 270
页数:7
相关论文
共 19 条
[1]
ALEKSEEV NI, 1988, SOV PHYS ACOUST+, V34, P232
[2]
BALANDIN VA, 1987, SOV PHYS ACOUST+, V33, P342
[3]
Orientation relaxation in H8 nematic and its solution in a nonmesogenic solvent under a magnetic field [J].
Bogdanov, DL ;
Gevorkian, EV ;
Romanov, AA ;
Shevchuk, MV .
TECHNICAL PHYSICS, 2004, 49 (05) :635-637
[4]
Cummins HermanZ., 1977, Photon correlation spectroscopy and velocimetry
[5]
De Gennes P. G., 1974, The Physics of Liquid Crystals
[6]
Drzaic PS., 1995, Liquid crystal dispersions
[7]
ULTRASONIC MEASUREMENTS WITH MILLILITER LIQUID SAMPLES IN 0.5-100 MHZ RANGE [J].
EGGERS, F ;
FUNCK, T .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1973, 44 (08) :969-977
[8]
Landau L. D., 1954, Dokl. Akad. Nauk SSSR, V96, P469
[9]
PASECHNIK SV, 1989, ZH FIZ KHIM+, V63, P471
[10]
Random anisotropy nematic model: Nematic-non-nematic mixture [J].
Popa-Nita, V ;
Kralj, S .
PHYSICAL REVIEW E, 2006, 73 (04) :1-8