| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-콜로이드·계면화학 |
| 제목 | Rotational dynamics of colloidal chains at a fluid-fluid interface |
| 초록 | The expedition for designing new induces dipolar colloids is demanding for simple experimental models to study the collective behavior. Most synthetic dipolar induced particles move by using time-sharing optical laser tweezer apparatus to investigate the rotational motion. Here, we address the question of whether simple dipolar induced Janus spheres can assemble into linear structures near the oil/water interface that exhibit rotational motion. We study how rotation motion occurs between interfacial particles and remaining individual swimmers in a chain that can affect its angular behavior. Janus particle chains showed pinning of an interfacial particle at lower laser power, whereas permanent rigid chains showed effective interfacial rotation at higher laser power. Moreover, we are able to confirm our pinning experimental results with dynamic contact angle using a tensiometer. Our method opens a new way to study novel angular phenomena of colloids with enforced swimming behaviors. |
| 저자 | Chetan Chandrakant Revadekar, Bum Jun Park |
| 소속 | Kyung Hee Univ. |
| 키워드 | Janus Particle; Interface; Pinning; Rotation; Contact angle |
