Liquid Combination with High Refractive Index Contrast and Fast Scanning Speeds for Electrowetting Adaptive Optics
Liquid Combination with High Refractive Index Contrast and Fast Scanning Speeds for Electrowetting Adaptive Optics
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DOI：
10.1021/acs.langmuir.8b02849
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发表时间：
2018-12-04
期刊：
影响因子：
3.9
通讯作者：
Bright, Victor M.
中科院分区：
文献类型：
--
作者：
Lim, Wei Yang;Supekar, Omkar D.;Bright, Victor M.
电润湿自适应光学器件是通用的，其应用范围从显微镜到遥感。这些装置中液体的选择决定了其调谐范围、时间响应和工作波长。我们采用透镜和棱镜装置表征了由1-苯基-1-环己烯和去离子水组成的液体体系。液体具有大的接触角调节范围，从173度到60度。在双电极棱镜中，测量的最大扫描角在+/-13.7度处实现，模拟预测为+/-18.2度。在4 mm直径的装置中，在100 ms下测量液体从静止达到90度接触角的切换时间。对于两个电极之间的20 V差，用两个电极棱镜进行的稳态扫描显示出+/-4.8度的线性和一致的扫描角，而对于80 V的电压差，使用液体系统的射束扫描在500 Hz下实现+/-1.74度。
Electrowetting adaptive optical devices are versatile, with applications ranging from microscopy to remote sensing. The choice of liquids in these devices governs its tuning range, temporal response, and wavelength of operation. We characterized a liquid system, consisting of 1-phenyl-1-cyclohexene and deionized water, using both lens and prism devices. The liquids have a large contact angle tuning range, from 173 to 60 degrees. Measured maximum scanning angle was realized at +/- 13.7 degrees in a two-electrode prism, with simulation predictions of +/- 18.2 degrees. The liquid's switching time to reach 90 degrees contact angle from rest, in a 4 mm diameter device, was measured at 100 ms. Steady-state scanning with a two-electrode prism showed linear and consistent scan angles of +/- 4.8 degrees for a 20 V differential between the two electrodes, whereas beam scanning using the liquid system achieved +/- 1.74 degrees at 500 Hz for a voltage differential of 80 V.