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Characterization of cMUTs in rarefied gases
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Davis, L. A. J., Hutchins, David A. and Noble, Russell A. (2007) Characterization of cMUTs in rarefied gases. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Vol.54 (No.5). pp. 1065-1071. doi:10.1109/TUFFC.2007.352 ISSN 0885-3010.
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Official URL: http://dx.doi.org/10.1109/TUFFC.2007.352
Abstract
The performance of capacitive micromachined ultrasonic transducers (cMUTs) was investigated at low pressures in various gases such as air, carbon dioxide, and helium. The aim was to replicate the pressure conditions likely to meet on the surface of other planets such as Mars, where ultrasonic wind velocity measurements might be possible. It is demonstrated that cMUTs are capable of operating at low pressures, and the response to pressures below terrestrial atmospheric values is observed experimentally and compared to theoretical predictions. The center frequency of operation and sensitivity are both observed to be affected by changing pressures.
Item Type: | Journal Article | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control | ||||
Publisher: | IEEE | ||||
ISSN: | 0885-3010 | ||||
Official Date: | May 2007 | ||||
Dates: |
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Volume: | Vol.54 | ||||
Number: | No.5 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 1065-1071 | ||||
DOI: | 10.1109/TUFFC.2007.352 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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