1. Acoustofluidic actuation of in situ fabricated microrotors.
- Author
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Kaynak, Murat, Ozcelik, Adem, Nama, Nitesh, Nourhani, Amir, Lammert, Paul E., Crespi, Vincent H., and Huang, Tony Jun
- Subjects
MICROACTUATORS ,ROTORS ,MICROFLUIDICS ,FLUIDIC devices ,MICROELECTROMECHANICAL systems - Abstract
We have demonstrated in situ fabricated and acoustically actuated microrotors. A polymeric microrotor with predefined oscillating sharp-edge structures is fabricated in situ by applying a patterned UV light to polymerize a photocrosslinkable polyethylene glycol solution inside a microchannel around a polydimethylsiloxane axle. To actuate the microrotors by oscillating the sharp-edge structures, we employed piezoelectric transducers which generate tunable acoustic waves. The resulting acoustic streaming flows rotate the microrotors. The rotation rate is tuned by controlling the peak-to-peak voltage applied to the transducer. A 6-arm microrotor can exceed 1200 revolutions per minute. Our technique is an integration of single-step microfabrication, instant assembly around the axle, and easy acoustic actuation for various applications in microfluidics and microelectromechanical systems (MEMS). [ABSTRACT FROM AUTHOR]
- Published
- 2016
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