[HTML][HTML] Review of flexible microelectromechanical system sensors and devices

X Yang, M Zhang - Nanotechnology and Precision Engineering, 2021 - pubs.aip.org
Today, the vast majority of microelectromechanical system (MEMS) sensors are
mechanically rigid and therefore suffer from disadvantages when used in intimately …

Review of piezoelectric micromachined ultrasonic transducers for rangefinders

J Pan, C Bai, Q Zheng, H Xie - Micromachines, 2023 - mdpi.com
Piezoelectric micromachined ultrasonic transducer (pMUT) rangefinders have been rapidly
developed in the last decade. With high output pressure to enable long-range detection and …

A miniaturized transit-time ultrasonic flowmeter based on ScAlN piezoelectric micromachined ultrasonic transducers for small-diameter applications

Y Gao, M Chen, Z Wu, L Yao, Z Tong, S Zhang… - Microsystems & …, 2023 - nature.com
Transit-time ultrasonic flowmeters (TTUFs) are among the most widely used devices for flow
measurements. However, traditional TTUFs are usually based on a bulk piezoelectric …

Design and characterization of an aluminum nitride-based MEMS hydrophone with biologically honeycomb architecture

L Jia, L Shi, C Liu, Y Yao, C Sun… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this article, we present a high-performance aluminum nitride (AlN)-based
microelectromechanical system (MEMS) hydrophone sensor, in which the sensing cells are …

Monolithic single PMUT-on-CMOS ultrasound system with+ 17 dB SNR for imaging applications

I Zamora, E Ledesma, A Uranga, N Barniol - IEEE Access, 2020 - ieeexplore.ieee.org
This article presents a fully integrated ultrasound system based on a single piezoelectric
micromachined ultrasonic transducer (PMUT) monolithically fabricated with a 0.13 μm …

PMUT and CMUT devices for biomedical applications: A review

E Moisello, L Novaresi, E Sarkar, P Malcovati… - IEEE …, 2024 - ieeexplore.ieee.org
Piezoelectric Micromachined Ultrasonic Transducers (PMUT) and Capacitive
Micromachined Ultrasonic Transducers (CMUT) have seen great developments in recent …

9.5% scandium doped ALN PMUT compatible with pre-processed CMOS substrates

E Ledesma, I Zamora, A Uranga… - 2021 IEEE 34th …, 2021 - ieeexplore.ieee.org
This paper presents an 80 μm squared piezoelectric micromachined ultrasonic transducer
(PMUT) using 9.5% scandium-doped aluminum nitride (AlScN). The improvement in the …

Eye-tracking monitoring based on PMUT arrays

S Sun, J Wang, M Zhang, Y Yuan… - Journal of …, 2021 - ieeexplore.ieee.org
As common and natural activity of human beings, eye movement has been regarded as an
indicator of human physiological and psychological health; eye movement tracking has …

Enhancing AlN PMUTs' acoustic responsivity within a MEMS-on-CMOS process

E Ledesma, I Zamora, A Uranga, F Torres, N Barniol - Sensors, 2021 - mdpi.com
In this paper, guidelines for the optimization of piezoelectrical micromachined ultrasound
transducers (PMUTs) monolithically integrated over a CMOS technology are developed …

High sound pressure piezoelectric micromachined ultrasonic transducers using sputtered potassium sodium niobate

F Xia, Y Peng, W Yue, M Luo, M Teng… - Microsystems & …, 2024 - nature.com
This work presents air-coupled piezoelectric micromachined ultrasonic transducers (pMUTs)
with high sound pressure level (SPL) under low-driving voltages by utilizing sputtered …