[18a-211B-1~7] 4.1 Plasmonics and Nanophotonics

▲ [18a-211B-2] Optical Force Manipulation of Nematic Liquid Crystal Assembly

〇Shahrul Kadri Ayop^1,2, Keiji Sasaki² (1.UPSI, 2.RIES Hokkaido Univ.)

Keywords:liquid crystal, optical force, plasmonic

Liquid crystal (LC) shows interesting physical properties in between solid and liquid phases. Generally, LCs are categorized into thermotropic and lyotropic type. The first is temperature sensitive while the later is concentration dependant. At microscopic level, LCs molecules are represented by director. The director is average orientation of a group of LCs molecules at specific localized volume. Liquid Crystal Display (LCD) technology and others were made possible by manipulating LCs director in between of polarizers using electrical field [1]. It has been shown that line defect in LCs can be optically manipulated with and without particle probe [2][3]. In a meanwhile, plasmonic field in a nanogap structure suggested possible localized manipulation of molecules which offers LC assembly manipulation [4]. Therefore, we aim for the LC assembly manipulation by optical force on plasmonic nanostructure.