Applications of Capacitive Micromachined Ultrasonic Transducers: A Comprehensive Review

Area of Science:

• Acoustics
• Materials Science
• Electrical Engineering

Background:

• Capacitive micromachined ultrasonic transducers (CMUTs) emerged as an alternative to traditional piezoelectric transducers.
• CMUTs exhibit superior transduction properties, driving their adoption across various acoustic applications.
• Their CMOS compatibility and miniaturization potential make them ideal for the ultrasound industry.

Purpose of the Study:

• To comprehensively review the practical applications of CMUTs.
• To provide a topicwise presentation of CMUT usage across different fields.
• To briefly cover essential device properties and experimental details for each application.

Main Methods:

• Literature review of CMUT applications.
• Topicwise categorization of reported CMUT uses.
• Summarization of device characteristics and experimental considerations.

Main Results:

• CMUTs have been investigated in a wide array of acoustic applications beyond initial medical imaging.
• The review consolidates information on CMUTs' practical implementation in diverse fields.
• Key device properties and experimental nuances for various applications are presented.

Conclusions:

• CMUTs are a versatile and advanced technology with broad applicability in acoustics.
• This review serves as a singular, comprehensive resource on practical CMUT applications.
• The findings underscore the growing importance and potential of CMUTs in the ultrasound industry.