Polarity-dependent electro-wetting or -dewetting on a conductive silicon substrate
Abstract
We demonstrate droplet manipulation using electric signals to induce the liquid to wet or dewet on a hydrophilic conductive substrate in the air without adding layers. In this phenomenon, the contact angle changes more than 15 or -20 by using the ionic surfactant mediated droplets, with only 3 volts of the actuation voltage.
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