Results 91 to 100 of about 324,266 (197)

Capacitive Micromachined Ultrasonic Transducer Array with Pencil Beam Shape and Wide Range Beam Steering [PDF]

, 2012
A capacitive micromachined ultrasonic transducer (CMUT) array is designed as an alternative to conventional piezoelectric transducers. A thin silicon nitride membrane is suspended over a bottom electrode on a silicon wafer.
Thomas, G., Emadi, T.A., Buchanan, D.A., Pistorius, S.   +3 more
core   +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

A Handheld Imaging Probe for Acoustic Angiography With an Ultrawideband Capacitive Micromachined Ultrasonic Transducer (CMUT) Array. [PDF]

IEEE Trans Ultrason Ferroelectr Freq Control, 2022
Sanders JL, Biliroglu AO, Newsome IG, Adelegan OJ, Yamaner FY, Dayton PA, Oralkan O.   +6 more
europepmc   +1 more source

Capacitive Micromachined Ultrasonic Transducer Based Gas Sensor Modeling and Simulation

, 2011
Micro Electro Mechanical Systems (MEMS) based Ultrasonic Transducers presents several advantages for some applications such as ease of array fabrication, unique thermal manipulation capabilities.
Subir Kumar Sarkar, K. Senthil Kumar, Saral Saha, P.C. Pradhan   +3 more
core   +1 more source

High-Frequency Coupled-Resonator CMUT with Stepped Cavity for Enhanced Sensitivity and Bandwidth in Acoustic Emission Detection

Metrology
Acoustic emission (AE) monitoring in metal additive manufacturing (AM) requires compact sensors capable of high-frequency operation, broad bandwidth, and high sensitivity.
Sulaiman Mohaidat, Mohammad Okour, Mutaz Al Fayad, Fadi Alsaleem   +3 more
doaj   +1 more source

Orthogonal Chirp Coded Excitation in a Capacitive Micro-machined Ultrasonic Transducer Array for Ultrasound Imaging: A Feasibility Study

Sensors, 2019
It has been reported that the frequency bandwidth of capacitive micro-machined ultrasonic transducers (CMUTs) is relatively broader than that of other ceramic-based conventional ultrasonic transducers.
Bae-Hyung Kim, Seungheun Lee, Kang-Sik Kim   +2 more
doaj   +1 more source

High Round-Trip Gain Piezoelectric-Capacitive Hybrid Micromachined Ultrasonic Transducer Based on Anodic Bonding Technology

International audienceIn this work, a piezoelectric-capacitive hybrid micromachined ultrasonic transducer (HMUT) with a high round-trip gain was developed to achieve superior pulse-echo imaging performance.
Wu, Tao, Xu, Wei-Jiang, Zhou, Jia, Lv, Ning, Ren, Junyan, Wang, Yan   +5 more
core   +1 more source

Design and Analysis of Capacitive Micromachined Ultrasonic Transducer

, 2019
Background:Objective:To simulate a Micromechanical systems (MEMS) based CMUT working as a transmitter with the existing design and provide comparison within the possible architectural geometries.Methods:FEM simulation software COMSOL is used to simulate ...
Rashmi Sharma, Anil Arora, Ashwani Kumar Dubey, Rekha Agarwal   +3 more
core   +1 more source

A Row-Column (RC) Addressed 2-D Capacitive Micromachined Ultrasonic Transducer (CMUT) Array on a Glass Substrate. [PDF]

IEEE Trans Ultrason Ferroelectr Freq Control, 2021
Sanders JL, Biliroglu AO, Wu X, Adelegan OJ, Yamaner FY, Oralkan O.   +5 more
europepmc   +1 more source

Design, Fabrication, and Characterization of Capacitive Micromachined Ultrasonic Transducers for Transcranial, Multifocus Neurostimulation

Micromachines
In a recent study using 3-D fullwave simulations, it was shown for a nonhuman primate model that a helmet-shaped 3D array of 128 transducer elements can be assembled for neurostimulation in an optimized configuration with the accommodation of an imaging ...
Tamzid Ibn Minhaj, Muhammetgeldi Annayev, Oluwafemi J. Adelegan, Ali Önder Biliroğlu, Feysel Yalçın Yamaner, Ömer Oralkan   +5 more
doaj   +1 more source