Electric and Magnetic Field-Assisted Orientational Transitions in the Ensembles of Domains in a Nematic Liquid Crystal on the Polymer Surface

International Journal of Molecular Sciences

Alexander M. Parshin¹  Vladimir A. Gunyakov¹  Victor Y. Zyryanov¹ 

[1] L. V. Kirensky Institute of Physics, Krasnoyarsk Scientific Centre, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; E-Mails:

关键词: liquid crystal;    polycarbonate;    domain structure;    electric field;    magnetic field;   

DOI  :  10.3390/ijms151017838

来源: mdpi

【 摘 要 】

Using electro- and magneto-optical techniques, we investigated orientational transitions in the ensembles of domains in a nematic liquid crystal on the polycarbonate film surface under the conditions of competing surface forces that favor radial and uniform planar alignment of nematic molecules. Having analyzed field dependences of the intensity of light passed through a sample, we established the threshold character of the orientational effects, plotted the calculated intensity versus magnetic coherence length, and compared the latter with the equilibrium length that characterizes the balance of forces on the polymer surface.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.