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Proceedings Paper

Micro mixer based on surface acoustic wave driving
Author(s): Guan Zhang; Yigui Li; Junfeng Zhang; Chunshen Yang; Jingquan Liu
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Paper Abstract

A resonance frequency of 8.9MHz copper Interdigital Transducer (IDT) is fabricated on a 127.8°YX type LiNbO3 substrate by lift-off process and the rapid droplet mixing is experimentally realized using the surface acoustic wave(SAW). The droplet mixing principle and the manufacturing process of the mixer are illustrated in detail. The droplet generates one swirl when only portion of the droplet is located on the saw propagating surface. The droplet generates two swirls when the whole of droplet is located on the saw propagating surface. The mixing between red particles with an average diameter of 1.5μm and a droplet with a volume of 3 μl is successfully implemented. No matter the droplet covers whole or just partly the saw propagating surface, the mixing process can be completed in one second when the applied driving power is 9W. The applications of SAW micro fluidics should be greatly enhanced using the rapid mixing process proposed in this paper.

Paper Details

Date Published: 28 December 2010
PDF: 6 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75441O (28 December 2010); doi: 10.1117/12.885452
Show Author Affiliations
Guan Zhang, Shanghai Jiao Tong Univ. (China)
Yigui Li, Shanghai Jiao Tong Univ. (China)
Junfeng Zhang, Shanghai Jiao Tong Univ. (China)
Chunshen Yang, Shanghai Jiao Tong Univ. (China)
Jingquan Liu, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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