| 학회 | 한국공업화학회 |
| 학술대회 | 2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 | 24권 1호 |
| 발표분야 | 포스터-콜로이드·계면화학 |
| 제목 | Identification of Dipole-Induced Dipole in a Multiphasic Colloid System |
| 초록 | When dielectric microspheres diffuse at the fluid-fluid interface, they exhibit strong and repulsive interactions. This phenomenon occurs due to the dissociation of the asymmetrical surface charges, the formation of electrical dipoles around the particles trapped at the interface [1, 2]. Direct measurements and analysis of the measure d interaction force consistently demonstrated electrostatic dipole interactions between particles confined to the o/w interface [3]. We assumed that dipole formed around the particles at the interface could rearrange the counter ions in the aqueous phase. If other particles approach to the interface, this rearrangement can cause unexpected attraction. We quantitatively studied this dipole-induced dipole interaction using time-sharing optical laser tweezers. References [1] A.J. Hurd, Journal of Physics A: Mathematical and General 18(16) (1985) [2] R. Aveyard, et.al. Physical review letters 88(24) (2002) [3] B.J. Park et.al. Soft Matter 6(21) (2010) |
| 저자 | 김용우, 박범준 |
| 소속 | 경희대 |
| 키워드 | Pickering Emulsions; Optical laser tweezers |
