| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
Glassy Photonic Inks Encapsulated in Core-Shell Microcapsules for Drawing Local Electric Field Map |
| 초록 |
Eccentric core-shell microcapsules containing photonic inks, which are composed of SiO2 nanoparticle solutions, are fabricated on microfluidic chips with a double-flow-focusing geometry. The microcapsules exhibit angle-independent reflection colors by forming glassy photonic structures when an electric field is applied. It is found that glassy photonic structures are formed by dielectrophoretic assembly of SiO2 nanoparticles in the microcapsules. Theoretical simulations demonstrate that the dielectrophoresis is dominant in the microcapsules because of the electric field gradient generated by the disproportional structure of the capsules. We demonstrate that photonic inks are highly useful to visualize and sense the electric field gradient by color. Electric field gradient between two arbitrary points can be measured by simply reading their hue distances. |
| 저자 |
강영종, 전현우, 정성훈, 장정환, 현진호
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| 소속 |
한양대 |
| 키워드 |
photonic inks; glassy photonic structures; microcapsules; dielectrophoresis; electric field map
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| E-Mail |
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