| 학회 | 한국화학공학회 |
| 학술대회 | 2007년 봄 (04/19 ~ 04/20, 울산 롯데호텔) |
| 권호 | 13권 1호, p.919 |
| 발표분야 | 재료 |
| 제목 | Self-Organization and Crystallization of Colloidal Particles in Photocurable Droplets |
| 초록 | Self-assembly, which is a governing principle how materials form in nature, has attracted great attention in materials chemistry and soft condensed-matter physics. However, most of self-assembled structures have always contained undesired defects and the overall orientation of their arrangement or packing structure is hard to control. Recently, we developed the novel route to creating spherical shaped colloidal crystals using emulsion droplet as a geometrical confinement for the self-assembly of colloidal particles. In this study, we report fabrication method of spherical colloidal crystals (or photonic balls) and their photonic characteristics. In order to make photonic balls, we made photocurable emulsion droplets with high concentration of colloidal particles. Particles in droplets were arranged to reduce the total energy of system and formed the onion ring-like structure from surface to core of droplets. Subsequent UV exposure induced solidification of droplets within a few seconds and solidified structure showed unique properties as spherical photonic crystals, unlike usual film structure. |
| 저자 | 김신현1, 이기라2, 최재훈1, 양승만1 |
| 소속 | 1한국과학기술원 생명화학공학과 / 한국과학기술원 광자유체집적소자연구단, 2한국기초과학지원(연) |
| 키워드 | spherical colloidal crystals; photonic balls; photocurable emulsion |
| 원문파일 | 초록 보기 |
