The nuclear-magnetic-resonance (NMR) technique is employed to liquid-crystal-dispersed-polymer (LCDP) systems. Deuterium NMR is used to determine director distributions in LCDP cells in the presence of a magnetic field. The samples consist of a nematic liquid crystal mixed with small percentages of a monomer that is polymerized under different conditions after dissolving it in the liquid crystal. NMR spectra of the deuterated liquid-crystal molecules give information on orientation and order in such systems. The orientation of the polymer skeleton formed during the polymerization is found to be stable. It determines the orientation of the nematic director even in the presence of a strong external magnetic field. Simple models for the director field are presented.
Journal of Applied Physics
Copyright 1991 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 70, 135 (1991) and may be found at http://dx.doi.org/10.1063/1.350326.
Stannarius, Ralf; Crawford, G. P.; Chien, Liang-Chy; Doane, J. William (1991). Nematic Director Orientation in a Liquid-Crystal-Dispersed Polymer - A Deuterium NMR Approach. Journal of Applied Physics 70(1) 135-143. doi: 10.1063/1.350326. Retrieved from https://oaks.kent.edu/cpippubs/148