Vertical jetting induced by shear horizontal leaky surface acoustic wave on 36°Y-X LiTaO3

Fu, Chen, Quan, Ao-Jie, Luo, Jing-Ting, Pang, H. F., Guo, Y. J., Wu, Qiang, Ng, Wai Pang, Zu, Xiao-Tao and Fu, Yong Qing (2017) Vertical jetting induced by shear horizontal leaky surface acoustic wave on 36°Y-X LiTaO3. Applied Physics Letters, 110. p. 173501. ISSN 0003-6951

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Shear horizontal surface acoustic waves (SH-SAWs) have been regarded as a good candidate for liquid sensing applications, but being inefficient in fluid manipulation due to a minimal fluid coupling between the fluid and acoustic waves. However, in this letter, a vertical jetting function was realized using the SH-SAW generated from a 36°Y-X LiTaO3 SAW device. The jetting of the droplet induced by the SH-SAWs was observed nearly along vertical direction, and the aspect ratio of the liquid beam is proportional to the applied power before breaking up, which is dramatically different from those generated from the conventional Rayleigh SAWs. By conducting theoretical simulation and experimental investigation on the SH-SAWs systematically, we concluded that the wave/energy pressure dissipated into the sessile droplets causes this vertical ejection on the device surface.

Item Type: Article
Uncontrolled Keywords: Vertical jetting, shear horizontal leaky surface acoustic wave, 36°Y-X LiTaO3, energy coupling
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 06 Apr 2017 09:05
Last Modified: 01 Aug 2021 04:37

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