| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
고분자가공/복합재료- 미래 자동차용 고분자소재 최신기술 동향 |
| 제목 |
Assembly of dumbbells colloids using electric field |
| 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 fabricated dumbbell like colloids using seeded emulsion growth method. We applied AC electric field onto anisotropic colloidal dispersion and observed their assembly behavior under microscope with crossed polarizer. Long axis of dumbbell colloids have been aligned along the direction of E-field and closely packed each other. This behavior can be controlled by varying voltage and frequency of AC field. |
| 저자 |
이지선1, Stefano sacanna2, 박현주3, David Pine2, 정희태3
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| 소속 |
1카이스트, 2New York Univ., 3KAIST |
| 키워드 |
anisotropic colloid; colloidal assembly; electric field
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| E-Mail |
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