| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 가을 (10/27 ~ 10/28, 고려대학교) |
| 권호 |
12권 2호, p.2365 |
| 발표분야 |
재료 |
| 제목 |
Self-Organization of Colloidal Particles in Confining Aqueous Droplets for Photonic Balls |
| 초록 |
Recently, we developed the emulsion-based route to creating spherical shaped colloidal crystals or polyhedra. In this case, emulsion droplets provided the geometrical confinement for the self-assembly of colloidal particles. Specifically, colloidal particles in confining droplets are self-organized into colloidal clusters as the droplets are shrunk by slow evaporation of the liquid in droplets. When the number of colloidal particles in a droplet is large, they form a spherical colloidal crystal (or photonic ball) which exhibits an optical stop band for the normal incident light independently of the position all over the spherical surface. In this study, we made monodisperse aqueous emulsion droplets encapsulating colloidal particles in oil phase, and controlled microwave irradiation of the aqueous drop phase created spherical colloidal crystals. Unlike usual colloidal crystals, colloidal crystals in spherical symmetry (or photonic balls) possessed photonic band gaps for the normal incident light independently of the position all over the spherical surface. |
| 저자 |
김신현1, 이수연1, 이기라2, 양승만3
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| 소속 |
1한국과학기술원 광자유체집적소자연구단 / 한국과학기술원 생명화학공학과, 2한국기초과학지원(연), 3나노 바이오 시스템 연구팀 |
| 키워드 |
colloidal crystals; emulsion; opals; photonic band gap
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
