Abstract
A method for spatial transportation of a droplet was presented. Spatial transporting characteristic was theoretically analyzed. The droplet on an YX-128° LiNbO3 piezoelectric substrate was exerted the acoustic streaming force and resistance from a steel ball with 2 mm diameter, which was fixed on the piezoelectric substrate by help of polydimethylsiloxane (PDMS). The droplet was then transported along the spherical surface. Experimental results show that spatial transportation height is relied on the size of the droplet and the power of an electric signal. 1.5 µl red ink droplet can be transported to the ball top at 30.8 dBm electric signal power.
Published Version
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