Presentation Information

[8p-P01-5]Controlling Janus Particle Dynamics Using Local Phase Change Induced by Laser Irradiation

〇Kotaro Takano1, Toshiharu Saiki1, Shogo Hatayama2, Kotaro Makino2 (1.Keio Univ. Saiki lab., 2.SFRC, AIST)

Keywords:

colloid,janus particle,phase change

In this study, we irradiated Janus particles—hemispherically coated with phase-change material GST or gold—with pulsed laser light to investigate changes in their self-propulsion speed and trajectory. The GST Janus particles exhibited an approximately 2.2-fold increase in speed, while the gold Janus particles showed unique trajectories such as spiraling and meandering due to asymmetry caused by laser-induced ablation.