| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 I |
| 제목 |
Self-assembly of icosahedral cluster and its photonic properties |
| 초록 |
Icosahedral colloidal clusters are a new class of spherical colloidal crystals. However, the optical characterization of the icosahedral cluster has not been achieved. Here, we produce icosahedral clusters by slowly shrinking particle-laden water droplets in water-saturated oil and characterize their optical properties. We controlled the drying time of aqueous droplets using a water-saturated hexadecane medium for preparation of the icosahedral cluster. In particular, we present real-time clustering using dual dye labeling under fluorescent confocal microscopy. The icosahedral clusters exhibit relatively strong structural colors compared to conventional onion-like supraballs. Simulations prove that the crystalline array inside the icosahedral cluster strengthens the collective specular diffraction. Moreover, the carbon-coated clusters further improve the saturation of structural colors. |
| 저자 |
김철호1, 박상혁2, 김신현2, 이원보3, 문준혁1
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| 소속 |
1서강대, 2KAIST, 3서울대 |
| 키워드 |
colloidal assembly; supraballs; icosahedral clusters; real-time observation; structural colors
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| E-Mail |
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