Jump to main content
Jump to site search

Issue 18, 2016
Previous Article Next Article

Acoustofluidic actuation of in situ fabricated microrotors

Author affiliations


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).

Graphical abstract: Acoustofluidic actuation of in situ fabricated microrotors

Back to tab navigation

Supplementary files

Article information

03 Apr 2016
18 Jul 2016
First published
28 Jul 2016

Lab Chip, 2016,16, 3532-3537
Article type

Acoustofluidic actuation of in situ fabricated microrotors

M. Kaynak, A. Ozcelik, N. Nama, A. Nourhani, P. E. Lammert, V. H. Crespi and T. J. Huang, Lab Chip, 2016, 16, 3532
DOI: 10.1039/C6LC00443A

Social activity

Search articles by author