Nanometer-amplitude SAWs propel thin oil films over obstacles through coupled ultrasonic, capillary, and gravitational forces, with a new 2D thin-film model incorporating obstacle geometry and acoustic streaming showing qualitative experimental agreement.
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Using surface acoustic waves to drive thin film flow over an obstacle
Nanometer-amplitude SAWs propel thin oil films over obstacles through coupled ultrasonic, capillary, and gravitational forces, with a new 2D thin-film model incorporating obstacle geometry and acoustic streaming showing qualitative experimental agreement.