6Wu B G,John L W,William D.Angular discrimination of light transmission through polymer dispersed liquid crystal films[J] .J.Appl.Phys.,1987,62(9):3925-3931.
7Ding J D,Yang Y L.Birefringence patterns of nematic droplets[J] .Jpn.J.Appl.Phys.,1992,31(9):2837-2845.
8Gerald P C.Microencapsulation effects on the electro optical behavior of polymer cholesteric liquid crystal flakes[D] .New York..University of Rochester,2009.