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Acoustofluidic actuation of in situ fabricated microrotors.

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).

SUBMITTER: Kaynak M

PROVIDER: S-EPMC5007211 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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Acoustofluidic actuation of in situ fabricated microrotors.

Kaynak Murat M Ozcelik Adem A Nama Nitesh N Nourhani Amir A Lammert Paul E PE Crespi Vincent H VH Huang Tony Jun TJ

Lab on a chip 20160728 18

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 st ...[more]

PMID: 27466140

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