| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Tailoring Colloidal Photonic Crystals with Controlled Sizes and Shapes |
| 초록 |
Photonic crystals have a periodic modulation of refractive index in wavelength scale of interacting light, which induce photonic bandgap and it is of practical significance for wide range of applications such as structural color pigments, bio/chemical sensors and optical resonators. In the present work, using silica particles dispersed in ethoxylated trimethylolpropane triacrylate (ETPTA) resin, we successfully fabricated various photonic structures with negligible cracking via evaporation-free colloidal self-assembly. Due to the diminishing van der Waals attraction between the silica particles induced by similar refractive index between silica and ETPTA, the particles self-assembled to the crystal structure of face-centered cubic (fcc) in photocurable ETPTA resin with high polarity. For practical applications, we prepared spherical photonic crystals (called photonic balls) and patterned photonic crystals using emulsion droplet and PDMS templates, respectively. |
| 저자 |
김신현1, 전석진1, 박효성1, 이기라2, 양승만1
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| 소속 |
1한국과학기술원 생명화학공학과, 2한국기초과학지원(연) |
| 키워드 |
Colloidal crystals; photonic crystals; optofluidics; microfluidics; photopolymerization
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| E-Mail |
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