| 학회 | 한국화학공학회 |
| 학술대회 | 2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 | 20권 2호, p.1919 |
| 발표분야 | 재료 |
| 제목 | Assembly of anisotropic colloids using electric field and observation of its optical property |
| 초록 | Assembly of colloids has been interested not only for physical study but for various applications such as photonic band gap material, diffraction gratings or biosensors. Specifically, anisotropic colloids such as dumbbell or snowman like colloids have been interested recently due to its unique optical/electrical properties. The strength of induced dipole moment differs by each direction of particle so that this anisotropic dipole moment induces directional assembly of micro-particle under AC field. In this study, We applied AC electric field onto colloidal dispersion which has dumbbell shaped particle fabricated seeded emulsion growth method. Long axis of dumbbell colloids have been aligned along the direction of E-field and closely packed each other. If isotropic colloids are assembled, we can observe specific reflecting color under cross polarizer. This behavior can be controlled by varying voltage and frequency of AC field. |
| 저자 | 이지선1, Hyunjoo Jung1, Stefano Scanna2, David Pine2, 정희태1 |
| 소속 | 1KAIST, 2New York Univ. |
| 키워드 | anisotropic colloid; electric field |
| 원문파일 | 초록 보기 |
