Results 101 to 110 of about 1,251 (192)

Full-Differential Folded-Cascode Front-End Receiver Amplifier Integrated Circuit for Capacitive Micromachined Ultrasonic Transducers

Micromachines, 2019
This paper describes the design of a front-end receiver amplifier for capacitive micromachined ultrasonic transducer (CMUT). The proposed operational amplifier (op amp) consists of a full differential folded-cascode amplifier stage followed by a class AB
Yiheng Du, Changde He, Guowei Hao, Wendong Zhang, Chenyang Xue   +4 more
doaj   +1 more source

Micromachined ultrasonic transducers

, 2008
In this chapter the basic principles, the fabrication process, and some modelling approaches of the novel micromachined ultrasonic transducers (MUTs) are described.
SAVOIA, ALESSANDRO STUART, Pappalardo M, CALIANO, Giosue', Caronti A.   +3 more
core  

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

, 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

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

An Analytical Model for CMUTs with Square Multilayer Membranes Using the Ritz Method

Micromachines, 2016
Capacitive micromachined ultrasonic transducer (CMUT) multilayer membrane plays an important role in the performance metrics including the transmitting efficiency and the receiving sensitivity.
Wen Zhang, Hui Zhang, Shijiu Jin, Zhoumo Zeng   +3 more
doaj   +1 more source

A PolyMUMPs Capacitive Micromachined Ultrasonic Transducer

, 2011
This work presents the design of Capacitive Micromachined Ultrasonic Transducers (CMUTs) with one and multiple bottom electrodes and their fabrication using the PolyMUMPs technique provided by MEMSCAP Inc. It also reports a new behavioral model of the CMUTs written in VHDL-AMS, complemented by a comparison between finite element analysis, behavioral ...
openaire   +1 more source

Design and implementation of CMUT multi-channel ultrasonic transceiver board based on PXIe

Dianzi Jishu Yingyong
To enable multi-channel pulse transmission, data acquisition, storage, transmission, and analysis based on a capacitive micromachined ultrasonic transducer (CMUT) array, a 32-channel ultrasound transceiver board was designed based on the PXIe bus.
Wu Shuaiqi, He Changde, Sun Shuaiwen, Lu Xiaoxing, Zhang Guojun, Zhang Wendong   +5 more
doaj   +1 more source

Capacitive micromachined ultrasonic transducers for chemical detection in nitrogen

, 2007
The authors present the prototype of a chemical sensor using a capacitive micromachined ultrasonic transducer array. Each element in the array consists of a large number of resonating membranes connected in parallel.
HEGNER, MARTIN
core   +2 more sources

Capacitive micromachined ultrasonic transducer arrays for integrated diagnostic/therapeutic catheters

, 2006
In recent years, medical procedures have become increasingly non-invasive. These include endoscopic procedures and intracardiac interventions (e.g., pulmonary vein isolation for treatment of atrial fibrillation and plaque ablation for treatment of ...
Khuri-Yakub, Butrus T., Yeh, David T., Kupnik, Mario, Wygant, Ira O., BAYRAM, BARIŞ, Wong, Serena H., Bayram, Barış, Ergun, A. Sanli, Yaralioglu, Goksen G., Zhuang, Xuefeng, Oralkan, Omer   +10 more
core   +1 more source

Integrable Post-Fabrication Annealing Treatment for Polymer-Based Capacitive Micromachined Ultrasonic Transducers: Performance Impacts

Journal of Manufacturing and Materials Processing
This study investigates the effects of post-fabrication annealing on polymer-based capacitive micromachined ultrasonic transducers (polyCMUTs). These devices comprise microscopic diaphragms produced via photolithographic patterning of polymer layers ...
Chenyang Luo, Jonas Welsch, Edmond Cretu, Robert Rohling, Martin Angerer   +4 more
doaj   +1 more source