TY - JOUR
T1 - Flexible Printed Circuit Board as Novel Electrodes for Acoustofluidic Devices
AU - Sun, Chao
AU - Mikhaylov, Roman
AU - Fu, Yongqing
AU - Wu, Fangda
AU - Wang, Hanlin
AU - Yuan, Xichen
AU - Xie, Zhihua
AU - Liang, Dongfang
AU - Wu, Zhenlin
AU - Yang, Xin
N1 - Funding Information:
Manuscript received October 13, 2020; accepted November 12, 2020. Date of publication December 8, 2020; date of current version December 24, 2020. This work was supported in part by the Natural Science Basic Research Program of Shaanxi Province under Grant 2020JQ-233, in part by the Fundamental Scientific Research of Central Universities under Grant 3102017OQD116, in part by the Engineering and Physical Sciences Research Council Fellowship under Grant EP/P002803/1 and Grant EP/P018998/1, in part by the Global Challenges Research Fund, and in part by the Royal Society under Grant IEC/NSFC/170142 and Grant IE161019. The review of this article was arranged by Editor M. M. Hussain. (Corresponding author: Xin Yang.) Chao Sun and Xichen Yuan are with the School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 2020 IEEE.
PY - 2021/1
Y1 - 2021/1
N2 - 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.
AB - 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.
KW - Acoustofluidics
KW - droplet
KW - flexible printed circuit board (FPCB)
KW - interdigital electrode (IDE)
KW - surface acoustic wave (SAW)
UR - http://www.scopus.com/inward/record.url?scp=85097945104&partnerID=8YFLogxK
U2 - 10.1109/TED.2020.3039760
DO - 10.1109/TED.2020.3039760
M3 - Journal article
AN - SCOPUS:85097945104
SN - 0018-9383
VL - 68
SP - 393
EP - 398
JO - IEEE Transactions on Electron Devices
JF - IEEE Transactions on Electron Devices
IS - 1
M1 - 9286861
ER -