Bulk Viscosities of MBBA from Ultrasonic Measurements

作者: K. A. Kemp , S. V. Letcher

DOI: 10.1007/978-1-4684-2727-1_32

关键词: MBBAAttenuationVolume viscosityCondensed matter physicsLiquid crystalUltrasoundUltrasonic sensorSpeed of soundMaterials scienceHydrodynamic theory

摘要: The propagation of ultrasound in oriented nematic liquid crystals has been shown to be anisotropic.1–6 attenuation and, a lesser extent, the velocity sound depend on direction relative preferred molecular orientation direction. hydrodynamic theory Forster, et al.

参考文章(8)
Grover C. Wetsel, Royce S. Speer, Bright A. Lowry, Michael R. Woodard, Effects of Magnetic Field on Attenuation of Ultrasonic Waves in a Nematic Liquid Crystal Journal of Applied Physics. ,vol. 43, pp. 1495- 1497 ,(1972) , 10.1063/1.1661348
Dieter Forster, Tom C. Lubensky, Paul C. Martin, Jack Swift, P. S. Pershan, Hydrodynamics of Liquid Crystals Physical Review Letters. ,vol. 26, pp. 1016- 1019 ,(1971) , 10.1103/PHYSREVLETT.26.1016
G. G. Natale, D. E. Commins, Temperature Dependence of Anisotropic-Ultrasonic Propagation in a Nematic Liquid Crystal Physical Review Letters. ,vol. 28, pp. 1439- 1441 ,(1972) , 10.1103/PHYSREVLETT.28.1439
Ch. Gähwiller, The viscosity coefficients of a room-temperature liquid crystal (MBBA) Physics Letters A. ,vol. 36, pp. 311- 312 ,(1971) , 10.1016/0375-9601(71)90524-X
K. A. Kemp, S. V. Letcher, Ultrasonic Determination of Anisotropic Shear and Bulk Viscosities in Nematic Liquid Crystals Physical Review Letters. ,vol. 27, pp. 1634- 1636 ,(1971) , 10.1103/PHYSREVLETT.27.1634
Laurence C. Chow, Daniel E. Martire, Thermodynamics of Solutions with Liquid Crystal Solvents. IV. GLC Determination of the Degree of Order in a Nematic Mesophase Molecular Crystals and Liquid Crystals. ,vol. 14, pp. 293- 306 ,(1971) , 10.1080/15421407108084644
M. E. Mullen, B. Lüthi, M. J. Stephen, Sound Velocity in a Nematic Liquid Crystal Physical Review Letters. ,vol. 28, pp. 799- 801 ,(1972) , 10.1103/PHYSREVLETT.28.799
Ernest D. Lieberman, James D. Lee, Francis C. Moon, Anisotropic Ultrasonic Wave Propagation in a Nematic Liquid Crystal Placed in a Magnetic Field Applied Physics Letters. ,vol. 18, pp. 280- 281 ,(1971) , 10.1063/1.1653663