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https://hdl.handle.net/2440/35266
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Type: | Conference paper |
Title: | Radio frequency controlled microvalve for biomedical applications |
Author: | Dissanayake, D. Tikka, A. Al-Sarawi, S. Abbott, D. |
Citation: | Smart materials IV : 11-13 December 2006, Adelaide, Australia / Nicolas H. Voelcker (ed.), pp. 1-13 [CDROM] |
Publisher: | SPIE |
Publisher Place: | USA |
Issue Date: | 2006 |
Series/Report no.: | Proceedings of SPIE--the International Society for Optical Engineering ; 6413. |
ISBN: | 0819465216 9780819465214 |
ISSN: | 0277-786X 1996-756X |
Conference Name: | Smart Materials, Nano- and Micro-Smart Systems (10 Dec 2006 - 13 Dec 2006 : Adelaide, Australia) |
Editor: | Voelcker, N.H. |
Statement of Responsibility: | Don W. Dissanayake, Ajay C. Tikka, Said F. Al-Sarawi, and Derek Abbott |
Abstract: | In this paper we propose the use of a RF controlled microvalve for implementation on a PZT substrate for biomedical applications. Such device has a huge range of applications such as parallel mixing of photo-lithographically defined nanolitre volumes, flow control in pneumatically driven microfluidic systems and lab-on-chip applications. The microvalve makes use of direct actuation mechanisms at the microscale level to allow its use in vivo applications. A number of acoustic propagation modes are investigated and their suitability for biomedical applications, in terms of the required displacement, device size and operation frequency. A theoretical model of the Surface Acoustic Wave (SAW) device is presented and its use in micro-valve application was evaluated using ANSYS tools. Furthermore, the wireless aspect of the device is considered through combining the RF antenna with the microvalve simulation by assuming a high carrier frequency with a small peak-to-peak signal. A new microvalve structure which uses a parallel type piezoelectric bimorph actuator was designed and simulated using ANSYS tools. Then, further optimization of the device was carried out to achieve a better coupling between electrical signal and mechanical actuation within the SAW device. |
Description: | © 2006 COPYRIGHT SPIE--The International Society for Optical Engineering |
DOI: | 10.1117/12.695743 |
Published version: | http://spiedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PSISDG00641300000164130D000001&idtype=cvips&gifs=yes |
Appears in Collections: | Aurora harvest Electrical and Electronic Engineering publications |
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