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Proceedings Paper

Integrating optopiezoelectric actuators and a two-mode excited linear ultrasonic motor for microfluidics
Author(s): Tsun-Hsu Chen; Hsin-Hu Wang; Yu-Hsiang Hsu; Chih-Kung Lee
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Paper Abstract

In comparison to more developed optical method for microparticle manipulation like optical tweezers, an optopiezoelectric actuating system could provide force output that is several orders higher. Taking advantages of photoconductive materials, the concept of integrating a virtual electrode in a distributed opto-piezoelectric actuators was developed for real-time in-situ spatial tailoring for vast varieties of applications in biochips, smart structures, etc. In this study, photoconductive material titanium oxide phthalocyanine (TiOPc) was used as the active ingredient to enable the virtual electrode in an opto-piezoelectric material based distributed actuator. By illuminating light of proper wavelength and enough intensity onto TiOPc photoconductive material, the effective impedance of the illuminated portion of TiOPc could drop significantly. The contributions of using additives in the TiOPc photoconductive electrode to adjust the electrical properties was investigated for optimization. Further, the two-mode excited linear ultrasonic motor was also studied and the feasibility to integrate the TiOPc photoconductive electrode was discussed. The flexibility provided by this newly developed system could potential deliver versatile performance in biochip applications.

Paper Details

Date Published: 21 March 2016
PDF: 6 pages
Proc. SPIE 9705, Microfluidics, BioMEMS, and Medical Microsystems XIV, 97050Q (21 March 2016); doi: 10.1117/12.2211944
Show Author Affiliations
Tsun-Hsu Chen, National Taiwan Univ. (Taiwan)
Hsin-Hu Wang, National Taiwan Univ. (Taiwan)
Yu-Hsiang Hsu, National Taiwan Univ. (Taiwan)
Chih-Kung Lee, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 9705:
Microfluidics, BioMEMS, and Medical Microsystems XIV
Bonnie L. Gray; Holger Becker, Editor(s)

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