电润湿
电极
电介质
材料科学
图层(电子)
数字微流体
光电子学
纳米技术
化学
物理化学
作者
Mehdi Khodayari,Benjamin Hahne,Nathan B. Crane,Alex A. Volinsky
摘要
Floating electrode electrowetting is caused by dc voltage applied to a liquid droplet on the Cytop surface, without electrical connection to the substrate. The effect is caused by the charge separation in the floating electrode. A highly-resistive thermally-grown SiO2 layer underneath the Cytop enables the droplet to hold charges without leakage, which is the key contribution. Electrowetting with an SiO2 layer shows a memory effect, where the wetting angle stays the same after the auxiliary electrode is removed from the droplet in both conventional and floating electrode electrowetting. Floating electrode electrowetting provides an alternative configuration for developing advanced electrowetting-based devices.
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