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Polarity-dependent electro-wetting or -dewetting on a conductive silicon substrate

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arxiv 2207.11109 v2 pith:GQFVXKJO submitted 2022-07-22 physics.flu-dyn

classification physics.flu-dyn
keywords conductivesubstrateactuationaddinganglechangescontactdemonstrate
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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{\deg} or -20{\deg} by using the ionic surfactant mediated droplets, with only \pm3 volts of the actuation voltage.

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