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Effect of fluid losses and acoustic resonances in CMUTs with vented cavities
- Apte, Nikhil;
- Park, Kwankyu;
- Nikoozadeh, Amin;
- Khuri-Yakub, Butrus Thomas
Citations
SCOPUS
6초록
We report on capacitive micromachined ultrasonic transducers (CMUTs) with vented cavities for varying their bandwidth and sensitivity in airborne applications. The devices are simulated using a finite element model which incorporates viscous and thermal fluid losses in the squeeze film and the vent holes, as well as acoustic radiation and acoustic resonance in the backing. Our model accurately predicts the behavior of such CMUTs. The model is also validated with measurements at elevated pressure.
키워드
Airborne ultrasound; CMUT; high pressure; Navier-Stokes equations; wide bandwidth; Actuators; Bandwidth; Finite element method; Microsystems; Navier Stokes equations; Solid-state sensors; Transducers; Acoustic radiation; Acoustic resonance; Airborne applications; Airborne ultrasound; Capacitive micromachined ultrasonic transducer; CMUT; High pressure; Wide bandwidth; Ultrasonic transducers
- 제목
- Effect of fluid losses and acoustic resonances in CMUTs with vented cavities
- 저자
- Apte, Nikhil; Park, Kwankyu; Nikoozadeh, Amin; Khuri-Yakub, Butrus Thomas
- 발행일
- 2015-06
- 유형
- Conference Paper
- 저널명
- 2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
- 페이지
- 682 ~ 685