DocumentCode :
1960259
Title :
Design and fabrication of a cMUT probe for ultrasound imaging of fingerprints
Author :
Savoia, A. ; Caliano, G. ; Iula, A. ; Longo, C. ; Caronti, A. ; Carotenuto, R. ; Pappalardo, M.
Author_Institution :
Dipt. di Ing. Elettron., Univ. degli Studi Roma Tre, Rome, Italy
fYear :
2010
fDate :
11-14 Oct. 2010
Firstpage :
1877
Lastpage :
1880
Abstract :
Optical fingerprint scanners suffer from limited depth of penetration and are particularly sensitive to the surface conditions of the skin. Fingerprint scanners based on ultrasounds offer the possibility to explore the surface and the underlying tissues of the finger and to detect blood flow, leading to enhanced robustness and reliability in biometric applications. Capacitive Micromachined Ultrasonic Transducers (cMUTs) have shown to have great potential for use in medical imaging applications. The ease of fabricating broadband high-frequency ultrasound transducers makes the cMUT technology a good candidate for ultrasound based biometrics. This paper presents the design, fabrication and characterization of a cMUT linear array probe optimized for near-field ultrasound imaging. Ultrasound images of fingerprints are obtained using a customized 3D ultrasound scanning system.
Keywords :
capacitive sensors; fingerprint identification; micromachining; microsensors; ultrasonic imaging; ultrasonic transducer arrays; biometric applications; blood flow detection; cMUT linear array characterization; cMUT probe design; cMUT probe fabrication; capacitive micromachined ultrasonic transducers; fingerprint ultrasound imaging; high frequency ultrasound transducers; near field ultrasound imaging; ultrasound based biometrics; ultrasound based fingerprint scanners; Acoustics; Arrays; Fabrication; Imaging; Probes; Software; Ultrasonic imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium (IUS), 2010 IEEE
Conference_Location :
San Diego, CA
ISSN :
1948-5719
Print_ISBN :
978-1-4577-0382-9
Type :
conf
DOI :
10.1109/ULTSYM.2010.5935836
Filename :
5935836
Link To Document :
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