CUED Publications database

Flexible Printed Circuit Board as Novel Electrodes for Acoustofluidic Devices

Sun, C and Mikhaylov, R and Fu, Y and Wu, F and Wang, H and Yuan, X and Xie, Z and Liang, D and Wu, Z and Yang, X (2021) Flexible Printed Circuit Board as Novel Electrodes for Acoustofluidic Devices. IEEE Transactions on Electron Devices, 68. pp. 393-398. ISSN 0018-9383

Full text not available from this repository.


Surface acoustic wave (SAW)-based acoustofluidics shows broad applications in biomedicine and chemistry. Conventional manufacturing process for SAW devices uses photolithography and metal deposition, thus requires accessing cleanroom facilities. This study presents an efficient and versatile technique based on a flexible printed circuit board (FPCB) for developing SAW acoustofluidic devices. By mechanically clamping interdigital electrodes (IDEs) made on the FPCB onto a piezoelectric substrate, SAWs can be effectively generated with an additional matching network. The SAW amplitudes were measured by a laser vibrometer, which increases with the applied input voltage. The FPCB-SAW device has been applied to actuate 10-μm microspheres to form strong streaming vortices inside a droplet, and to drive a sessile droplet for transportation on the substrate surface. The use of the FPCB rather than a rigid printed circuit board (PCB) can help cut down on the overall footprint of the device and save space. The low requirement in assembling the FPCB-SAW device can facilitate versatile acoustofluidic applications by providing fast prototyping devices.

Item Type: Article
Depositing User: Cron Job
Date Deposited: 13 Nov 2020 20:56
Last Modified: 07 Sep 2021 02:04
DOI: 10.1109/TED.2020.3039760