| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Electrically Tunable Quasi-Amorphous Colloidal Structure for Angle-Independent Full Color Photonic Pixels |
| 초록 |
Electrically tunable photonic band gap (PBG) materials based on crystalline structures have been developed for active components of display. Despite considerable advances, the intrinsic drawbacks of the crystalline PBG materials such as the angle dependent hue and difficulty of fabricating defect-free structures in large area have yet to be addressed for their practical applications. Here we report quasi-amorphous colloidal structures exhibiting angle-independent photonic colors in response to the electric stimuli. Moderately polydisperse colloidal Fe3O4@SiO2 NPs dispersed in organic solvents exclusively form quasi-amorphous photonic materials at sufficiently high concentrations (>30wt%), and which reversibly reflect incident light in visible region (λpeak=490~655 nm) in response to the relatively low bias voltage (0~4V). We show the angle-independent tunable photonic colors with the fast response time (50~170ms) due to the isotropic nature of quasi-amorphous structures. |
| 저자 |
김대현, 김은주, Senthilkumar, 강영종
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| 소속 |
한양대 |
| 키워드 |
Photonic Crystal; Quasi-Amorphous; Tunability; Angle Independent; Display
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| E-Mail |
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