Design and fabrication of a novel SAW bio/chemical sensor in CMOS

Onur Tigli, Mona E. Zaghloul

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations


The design, fabrication, post-processing and characterization of a novel SAW (Surface Acoustic Wave) based bio/chemical sensor in CMOS technology is introduced. The sensors are designed in AMI 1.5 μm 2 metal, 2 poly process. A unique maskless post processing sequence is designed and completed. The three post-processing steps are fully compatible with any CMOS technology. This allows any signal control/processing circuitry to be easily integrated on the same chip. ZnO is used as the piezoelectric material for the SAW generation. A thorough characterization and patterning optimization of the sputtered ZnO was carried out. The major novelties that are introduced in the SAW delay line features are: The embedded heater elements for temperature control, compensation and acoustic absorbers that are designed to eliminate edge reflections and minimize triple transit interference. Both of these attributes are designed by using the CMOS layers without disturbing the SAW performance.

Original languageEnglish (US)
Title of host publicationProceedings of the Fourth IEEE Conference on Sensors 2005
Number of pages4
StatePublished - Dec 1 2005
Externally publishedYes
EventFourth IEEE Conference on Sensors 2005 - Irvine, CA, United States
Duration: Oct 31 2005Nov 3 2005

Publication series

NameProceedings of IEEE Sensors


OtherFourth IEEE Conference on Sensors 2005
Country/TerritoryUnited States
CityIrvine, CA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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