Results 41 to 50 of about 2,164 (196)
Use of Supporting Post Width to Increase the CMUT’s Resonant Frequency
IEEE Access, 2022 A new method is proposed to increase the resonant frequency of a Capacitive Micromachined Ultrasonic Transducer (CMUT) device while keeping the radii unchanged for devices fabricated by sacrificial release (SR) method.
Jiujiang Wang +8 more
doaj +1 more source
Investigation of PDMS as coating on CMUTs for imaging [PDF]
2014 IEEE International Ultrasonics Symposium, 2014 A protective layer is necessary for Capacitive Micromachined Ultrasonic Transducers (CMUTs) to be used for imaging purpose. The layer should both protect the device itself and the patient while maintaining the performance of the device. In this work Sylgard 170 PDMS is tested as coating material for CMUTs through comparison of transmit pressure and ...
la Cour, Mette Funding +5 more
openaire +2 more sources
Applications of Modelling and Simulation, 2022 In this paper, Finite Element Method (FEM)-based design and simulation of circular capacitive micromachined ultrasonic transducer (CMUT) has been discussed. The FEM simulation of CMUT is accomplished by using MEMCAD tools CoventorWare® and COMSOLTM. The
Gurpreet Singh Gill +3 more
doaj
Two Capacitive Micro-Machined Ultrasonic Transducers for Wind Speed Measurement
Sensors, 2016 This paper presents a new wind speed measurement method using a single capacitive micro-machined ultrasonic transducer (CMUT). The CMUT was arranged perpendicular to the direction of the wind flow, and a reflector was set up a short distance away, facing
Gia Thinh Bui +2 more
doaj +1 more source
Design of an Integrated Micro-Viscometer for Monitoring Engine Oil
Sensors, 2022 This paper proposes a novel integrated micro-viscometer for engine-oil monitoring. The final solution consists of a capacitive micromachined ultrasonic transducer (CMUT) and an application-specific integrated circuit (ASIC).
Roufaida Bensalem +7 more
doaj +1 more source
Micromachines, 2021 Analytical modeling of capacitive micromachined ultrasonic transducer (CMUT) is one of the commonly used modeling methods and has the advantages of intuitive understanding of the physics of CMUTs and convergent when modeling of collapse mode CMUT.
JiuJiang Wang +8 more
doaj +1 more source
Radiation impedance and equivalent circuit for immersed CMUT array element [PDF]
, 2006 Date of Conference: 2-6 Oct. 2006Conference name: 2006 IEEE Ultrasonics SymposiumIn this paper, we present equivalent circuit for immersed capacitive micromachined ultrasonic transducers (cMUT), based on an accurate parametric model.
M. N. Senlik +7 more
core +1 more source
High-power CMUTs: design and experimental verification [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2012 Capacitive micromachined ultrasonic transducers (CMUTs) have great potential to compete with piezoelectric transducers in high-power applications. As the output pressures increase, nonlinearity of CMUT must be reconsidered and optimization is required to reduce harmonic distortions. In this paper, we describe a design approach in which uncollapsed CMUT
Yamaner F.Y. +5 more
openaire +5 more sources
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 +4 more
doaj +1 more source
Outperforming piezoelectric ultrasonics with high-reliability single-membrane CMUT array elements
Microsystems & Nanoengineering, 2022 It has long been hypothesized that capacitive micromachined ultrasound transducers (CMUTs) could potentially outperform piezoelectric technologies. However, challenges with dielectric charging, operational hysteresis, and transmit sensitivity have stood ...
Eric B. Dew +4 more
doaj +1 more source