[19p-231A-1~8] 16.1 Fundamental properties, evaluation, process and devices in disordered materials

△ [19p-231A-1] Dynamical control of phase-change material coated Janus particles

〇Ryo Soma¹, Eiji Yamamoto¹, Kei Yamaguchi¹, Bokusui Nakayama¹, Masashi Kuwahara², Toshiharu Saiki¹ (1.Keio Univ., 2.AIST)

Keywords:Janus particles, phase-change material, Ge2Sb2Te5

Designing the diffusive behavior, self-propulsion, and self-assembly of colloidal particles has possibility for new devices and modelling active dynamics in nature. Janus Particles (JPs) are one of the active colloidal particles which are formed with two hemispheres of different substances. JPs show rich function depending on selected material.
Here we present a study of silica JPs (3 mm in diameter) partially coated with a phase-change switching material, Ge₂Sb₂Te₅. In the experiment, laser illumination and alternating electric field were applied to JPs in distilled water. We report the change of JP’s diffusivity by each of the external fields.