Development of temperature-controllable micro-droplets processor based on surface acoustic wave device
Date Issued
2009
Date
2009
Author(s)
Hsieh, Cheng-Hsien
Abstract
The surface acoustic wave excited by SFITs is used to drive the droplet on the hydrophobic surface. When SAW reaches the solid-liquid boundary, the acoustic streaming occurs in the liquid. If the acoustic streaming is large enough, the micro-droplet can be moved along the propagation direction of the surface acoustic wave. In the thesis, the temperature-controllable micro-droplets processor includes the following basic frameworks: the SAW device used to actuate and detect the droplet, the PI controller and the covered system with heaters and sensors. n this system, the ZnO nanorods and the stearic acid are used to define the hydrophobic film. The improvement of insertion loss and quality of hydrophobic film can be used to promote the repeatable usability of the SAW device. For accomplishing the accurate position performance of micro-droplet actuation, the PI controller system is necessary. In order to achieve the temperature-controllable scheme, the covered system with heaters and sensors can be used to control the temperature of the droplets.esults of this study show that the biological applications are proven feasible by using the temperature-controllable micro-droplets processor.
Subjects
SFIT
Hydrophobic film
PI control
Temperature-controllable
SAW
Micro-droplet
Type
thesis
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