[15p-W9_323-1~12] 22.1 Joint Session M "Phonon Engineering"

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[15p-W9_323-11] Electric and magnetic -field-induced Freedericksz transition and thermal diffusivity measurement of liquid crystals using a 3DMEMS device

〇(M1)Hiro Yagasaki¹, Ryu Meguya¹, Hiroshi Haraguchi¹, Fumito Araoka², Junko Morikawa¹ (1.Science Tokyo, 2.RIKEN)

Keywords:

thermal diffusivity,Freedericksz transition,liquid crystal

Liquid crystal molecules exhibit high responsiveness to external stimuli such as electric and magnetic fields, and it has been reported that their thermal properties vary depending on molecular orientation. However, it has been difficult to evaluate thermal diffusivity under controlled molecular alignment using conventional methods. In this study, we fabricated a device that enables thermal diffusivity measurements under applied voltage and evaluated the voltage and magnetic field dependences of thermal diffusivity associated with the Freedericksz transition of the high dielectric liquid crystal ZOC-A019XX using the TWA method.