Powerless tunable photonic crystal with bistable color and millisecond switching
Powerless tunable photonic crystal with bistable color and millisecond switching
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DOI：
10.1364/oe.19.013707
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发表时间：
2011-07-04
期刊：
影响因子：
3.8
通讯作者：
Yeh, J. Andrew
中科院分区：
文献类型：
--
作者：
Chan, Chia-Tsung;Yeh, J. Andrew
该研究展示了具有70 nm宽光谱调谐（535 nm至605 nm）和3 ms响应时间的可调谐光子晶体（PhC）。可调的PhC是基于液体在纳米级PhC空隙中的相互毛细作用。用乙醇和水润湿多孔硅PhC，可以实现PhC在充液状态（橙子）和充汽状态（黄色）之间的双稳态转换。由于两个润湿状态之间的能量势垒，可调谐的PhC可以保持在两个状态中的任一个，而无需外部功耗。(C)2011年美国光学学会
This study demonstrated a tunable photonic crystal (PhC) with 70 nm-wide spectral tuning (535 nm to 605 nm) and 3 ms of response time. The tunable PhC is based on reciprocal capillary action of liquid in the nanoscale PhC voids. By wetting the porous silicon PhC with ethanol and water, the PhC can be bistably switched respectively between liquid-filled state (orange color) and vapor-filled state (yellow color). Owing to the energy barrier between the two wetting states, the tunable PhC can remain at either of the two states with no external power consumption. (C) 2011 Optical Society of America