NDLI: Ultrasonic PZT gas sensor using thick film technology

Content Provider	IEEE Xplore Digital Library
Author	Gwirc, S. Gomez, H. Nagreira, C. Malatto, L.
Copyright Year	1997
Description	Author affiliation: CITEL, Inst. Nacional de Technologia Ind., Argentina (Gwirc, S.)
Abstract	A new low cost ultrasonic gas sensor for human environment pollution monitoring was developed using a thick film piezoelectric PZT ceramic resonator. The working principle of this kind of sensor is based on ultrasonic resonance of gas flowing through a cell. A PZT piezoelectric ceramic resonator generates ultrasonic waves within the cell cavity. Stationary waves are generated if distance between a vibrating surface and the opposite parallel reflecting wall, is an integer multiple of half vibration wavelength of the compound oscillator, formed by the vibrating surface and surrounding gas. In this way, resonance is induced in the gas and an important amount of vibration energy is absorbed by the gas, so changes can be measured on oscillation amplitude. Sensors based on this principle were designed using quartz crystals as ultrasound generators. Nevertheless in resonance condition the quality factor of quartz is much better than of PZT ceramic used in this case, several advantages are remarkable: low cost due to thick film technology, much higher tolerance to temperature variations and the possibility of PZT ceramic fine mechanical adjusting. The resonating cell's wall could be adjusted by using PZT elements as piezoelectric actuators, which control the cavity gap.
Starting Page	427
Ending Page	431
File Size	282852
Page Count	5
File Format	PDF
ISBN	0780341538
ISSN	10510117
DOI	10.1109/ULTSYM.1997.663055
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-05
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gas detectors Thick films Ceramics Resonance Costs Surface waves Vibration measurement Humans Pollution Monitoring
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in