Results 71 to 80 of about 749,316 (193)

Proof of Concept and Preliminary Results of Gas Detection by Measuring the Admittance at the Resonance and Anti-resonance of an Uncoated CMUT

Frontiers in Mechanical Engineering, 2020
Functionalized films are commonly used in gas sensing to target a particular gas. This is due, in part, to their usually high capability to detect very low concentrations and their high selectivity.
Luis Iglesias, Priyadarshini Shanmugam, Jean-François Michaud, Daniel Alquier, Dominique Certon, Isabelle Dufour   +5 more
doaj   +1 more source

MEMS: The Sensory Nervous System for Embodied AI Robots

SmartBot, Volume 1, Issue 3, September 2025.
Embodied AI represents a shift of intelligence from virtual to physical realms, calling for efficient and multimodal perceptual capabilities. This review illustrates how Micro‐Electro‐Mechanical Systems (MEMS) offer miniaturized, low‐power sensors such as those for ranging, inertia, touch, sound and smell, which serve as robotic “sensory organs”.
Xu Zhou, Dongsheng Li, Shuhan He, Mengyao Xiao, Zhouli Sui, Fusheng Zha, Lining Sun, Chengkuo Lee, Huicong Liu   +8 more
wiley   +1 more source

Novel Phased Array Piezoelectric Micromachined Ultrasound Transducers (pMUTs) for Medical Imaging

IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control, 2022
Two kinds of 128 channels pMUT-based phased array ultrasound transducers are described in this paper, one with a high frequency of around 6 MHz and another with a low frequency of around 1.5 MHz. The active area of the transducer is around 25 mm long and
Sina Sadeghpour, Sanjog Vilas Joshi, Chen Wang, Michael Kraft   +3 more
doaj   +1 more source

Ultrasound fundamentals and their clinical implications for interventional cytopathologists

Cytopathology, Volume 36, Issue 4, Page 356-374, July 2025.
Interventional cytopathologists need to know about ultrasound physics and instrumentation to produce an image that faithfully recreates the lesion discovered by the sonographer and diagnosed by the radiologist. A deep quantitative understanding of physics is not required.
David Lieu
wiley   +1 more source

A modular FPGA-based ultrasonic array system for applications including non-destructive testing [PDF]

, 2008
This paper reports work aimed at the development of an ultrasonic imaging system comprising modular, reprogrammable building blocks, or tiles, which can be customised for multiple applications, including and within non-destructive testing (NDT), by the ...
Afroukh, F., Saillant, J-F., Wallace, J., Cumming, D.R.S., Triger, S., Wang, L., Cochran, S.   +6 more
core   +1 more source

Highly Sensitive Phased Array Probes based on Capacitive Micromachined Ultrasonic Transducers

e-Journal of Nondestructive Testing
Capacitive Micromachined Ultrasonic Transducers (CMUTs) offer a wide freedom of design for ultrasonic phased arrays. They are characterized, in comparison to piezoelectric transducers, by a higher sensitivity in receiving and a wider bandwidth based on ...
Uwe Voelz, Marco Kircher, Sandro G. KOCH, Marcel Krenkel   +3 more
doaj   +1 more source

An All LTPS-TFT-Based Charge-Integrating Amplifier for Sensor-Array Readout Circuit on Flexible Substrate

IEEE Open Journal of the Solid-State Circuits Society, 2022
This article presents the design of a readout circuit for charge-output sensor arrays integrated on a flexible substrate. The charge-integrating amplifier is built with a current-output transimpedance amplifier that includes the integrator function with ...
Mohit Dandekar, Kris Myny, Wim Dehaene
doaj   +1 more source

Enhancing Ultrasound Power Transfer: Efficiency, Acoustics, and Future Directions

Advanced Materials, Volume 37, Issue 23, June 12, 2025.
Implantable devices significantly enhance healthcare but are limited by battery life. Ultrasound power transfer technology offers a promising solution for sustainable operation. This review addresses gaps in current research, particularly in sound field analysis and energy efficiency optimization.
Yi Zheng, Zhuomin Zhang, Yanhu Zhang, Qiqi Pan, Xiaodong Yan, Xuemu Li, Zhengbao Yang   +6 more
wiley   +1 more source

Preliminary Demonstration of Pulse-Echo Imaging With a Long Monolithic Flexible CMUT Array

IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control
Conformal ultrasound imaging using large-area transducer arrays is an emerging technology with significant potential for real-time, continuous, functional, and health monitoring applications.
Amirhossein Omidvar, Robert N. Rohling, Edmond Cretu, Mark E. Cresswell, Antony J. Hodgson   +4 more
doaj   +1 more source

Single-Shot Waterless Low-Profile Photoacoustic System: Near-Field Volumetric Imaging In Vivo for Blood Vessels Based on Capacitive Micromachined Ultrasonic Transducer (CMUT)

Sensors, 2019
Intensive research on photoacoustics (PA) for imaging of the living human body, including the skin, vessels, and tumors, has recently been conducted. We propose a PA measurement system based on a capacitive micromachined ultrasonic transducer (CMUT) with
Won Young Choi, Young Hun Kim, Hyeong Geun Jo, Joo Young Pyun, Soo Won Kwon, Kwan Kyu Park   +5 more
doaj   +1 more source