Results 31 to 40 of about 749,316 (193)

A 2D CMUT Array for Liver Elastography [PDF]

open access: yes, 2021
Proper diagnosis of liver disease at an early stage is very crucial for its effective treatment. Chronic liver disease if not treated can often lead to cirrhosis. At present, liver biopsy is the main diagnostic procedure.
Debnath, Sauparno
core   +1 more source

Radiation impedance and equivalent circuit for immersed CMUT array element [PDF]

open access: yes, 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

Transparent Dual-Frequency CMUT Arrays for Photoacoustic Imaging

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2023
The opaque ultrasound transducers used in conventional photoacoustic imaging systems necessitate oblique light delivery, which gives rise to some disadvantages such as inefficient target illumination and bulky system size. This work proposes a transparent capacitive micromachined ultrasound transducer (CMUT) linear array with dual-band operation for ...
Mahyar Ghavami   +2 more
openaire   +2 more sources

Simulating CMUT arrays using time domain FEA [PDF]

open access: yes2017 IEEE International Ultrasonics Symposium (IUS), 2017
PZFlex is a commercial FEA software that has been optimized for the ultrasound industry and is commonly used to design piezoelectric ultrasound transducers. However, PZFlex is not commonly used within the CMUT research field. Nevertheless, it has an explicit modeling approach allowing large structures like CMUT arrays to be modeled and its transient ...
Engholm, Mathias   +6 more
openaire   +1 more source

Stagger tuned cMUT array for wideband airborne applications [PDF]

open access: yes, 2006
Date of Conference: 2-6 Oct. 2006Conference name: 2006 IEEE Ultrasonics SymposiumIn this study, we explore the limits of cMUTs in air-borne applications. First we investigate the ways of increasing the bandwidth of a single cMUT cell in air.
Köymen Hayrtettin   +7 more
core   +1 more source

Thermal-Mechanical Noise Modeling and Measurements of a Row-Column Addressed CMUT Probe

open access: yesIEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control, 2022
Thermal-Mechanical (T-M) noise is a natural phenomenon occurring in Capacitive Micromachined Ultrasonic Transducers (CMUT). T-M noise is a value of great interest because it is linked to the minimal detectable pressure of a transducer and can also serve ...
Tony Merrien   +2 more
doaj   +1 more source

Fabrication of Vacuum-Sealed Capacitive Micromachined Ultrasonic Transducer Arrays Using Glass Reflow Process

open access: yesMicromachines, 2016
This paper presents a process for the fabrication of vacuum-sealed capacitive micromachined ultrasonic transducer (CMUT) arrays using glass reflow and anodic bonding techniques.
Nguyen Van Toan   +3 more
doaj   +1 more source

Design of an Integrated Micro-Viscometer for Monitoring Engine Oil

open access: yesSensors, 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

Breast Acoustic Parameter Reconstruction Method Based on Capacitive Micromachined Ultrasonic Transducer Array

open access: yesMicromachines, 2021
Ultrasound computed tomography (USCT) systems based on capacitive micromachined ultrasonic transducer (CMUT) arrays have a wide range of application prospects.
Yu Pei   +3 more
doaj   +1 more source

Research on High-Efficiency Transmission Characteristics of Multi-Channel Breast Ultrasound Signals Based on Graphene Structure

open access: yesCrystals, 2021
In breast ultrasound CT imaging, the ultrasound signals received by high-density CMUT cylindrical array have problems of low transmission efficiency, susceptibility to interference from other signals, and an inability to achieve efficient acquisition ...
Xinsa Zhao   +3 more
doaj   +1 more source

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