Feasibility study of ultrasonic biometrics based on finger vessel imaging by epitaxial-PZT/Si piezoelectric micromachined ultrasonic transducer

Engineering & Materials Science

• Ultrasonic transducers 92%
• Piezoelectric transducers 86%
• Lead zirconate titanate 78%
• Biometrics 64%
• Ultrasonics 55%
• Imaging techniques 49%
• Ultrasonic imaging 16%
• Polydimethylsiloxane 13%
• Phantoms 11%
• Image sensors 11%
• Thin films 10%

Physics & Astronomy

• biometrics 100%
• vessels 58%
• transducers 52%
• ultrasonics 49%
• linear arrays 9%
• lead zirconate titanates 9%
• performance 7%
• sensitivity 4%
• thin films 4%

Chemical Compounds

• Application 20%