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Proceedings Paper

Recent developments in surface acoustic wave sensors
Author(s): Paul Schiopu; Ionica Cristea; Neculai Grosu; Alexandru Craciun
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Paper Abstract

Surface Acoustic Wave sensors - SAW have been recognized for their efficiency and versatility in the electrical signals processing. The majority of results reported till the present, regarding SAW sensors, have been used Rayleigh SAW, on the principle of delay line. Reflexive delay line can be used for passive sensing and remote control. In the paper is presented a short introduction regarding the actual level of SAW devices development and their applications. A comparative study in connection with diversity of piezoelectric materials used for SAW devices manufacturing, (Quartz, LiNbO3, LGS with emphasis on GaPO4) evidence the advantages of GaPO4. The development directions of SAW sensor devices are shown: telecommunication, RFID SAW systems, SAW devices for remote monitoring, SAW sensors for early cancer diagnostics. Some applications of SAW sensor devices with GAPO4 are presented in the directions: remote monitoring and identification of gas. Some conclusions regarding trends in the development of SAW sensor devices are presented in the end of the work.

Paper Details

Date Published: 7 January 2009
PDF: 6 pages
Proc. SPIE 7297, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV, 72972G (7 January 2009); doi: 10.1117/12.823700
Show Author Affiliations
Paul Schiopu, Politehnica Univ. of Bucharest (Romania)
Ionica Cristea, Politehnica Univ. of Bucharest (Romania)
Neculai Grosu, Politehnica Univ. of Bucharest (Romania)
Alexandru Craciun, Politehnica Univ. of Bucharest (Romania)

Published in SPIE Proceedings Vol. 7297:
Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV
Paul Schiopu; Cornel Panait; George Caruntu; Adrian Manea, Editor(s)

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