Results 31 to 40 of about 324,266 (197)

An Annular CMUT Array and Acquisition Strategy for Continuous Monitoring [PDF]

open access: yesSensors
In many monitoring scenarios, repeated and operator-independent assessments are needed. Wearable ultrasound technology has the potential to continuously provide the vital information traditionally obtained from conventional ultrasound scanners, such as ...
María José Almario Escorcia   +7 more
doaj   +2 more sources

3D cone-beam breast ultrasonic tomography imaging for capacitive micromachined ultrasonic transducer cylindrical array [PDF]

open access: yesJASA Express Letters, 2021
In this paper, a 3D cone-beam ultrasonic transmission tomography method for capacitive micromachined ultrasonic transducer (CMUT) cylindrical phased array was proposed.
Yu Pei   +6 more
doaj   +1 more source

Mechanical and electrical sensitivity of a capacitive micro ultrasonic transducer considering scale effects [PDF]

open access: yesمهندسی مکانیک شریف, 2022
In the medical field, ultrasonic imaging is especially popular for its technological features, such as non-radioactive real-time acquisition, affordable equipment cost, and miniaturization capabilities in minimally invasive methods.
S. Darbasi   +4 more
doaj   +1 more source

A theoretical model of a new electrostatic transducer incorporating fluidic amplification [PDF]

open access: yes, 2008
This article concerns the design of a new electrostatic transducer whose backplate consists of a series of drilled pipes. A new one-dimensional model is derived which considers the interaction of the membrane with the air load, the air cavities, and the ...
Walker, Alan J.   +3 more
core   +4 more sources

Research on Broadband Matching Method for Capacitive Micromachined Ultrasonic Transducers Based on PDMS/TiO2 Particles

open access: yesMicromachines, 2022
The study of impedance matching between a transducer and its working medium is an important part of acoustic transducer design. The traditional quarter wavelength matching (Q-matching) scheme is not suitable for broadband capacitive micromachined ...
Bizhen Gao   +9 more
doaj   +1 more source

Surface micromachined capacitive ultrasonic transducers [PDF]

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1998
The current state of novel technology, surface microfabricated ultrasonic transducers, is reported. Experiments demonstrating both air and water transmission are presented. Air-coupled longitudinal wave transmission through aluminum is demonstrated, implying a 110 dB dynamic range for transducers at 2.3 MHz in air. Water transmission experiments from 1
Ladabaum, I.   +4 more
openaire   +4 more sources

cMUT technology developments

open access: yesZeitschrift für Medizinische Physik, 2023
Capacitive micromachined ultrasonic transducer (cMUT) technology has steadily advanced since its advent in the mid-1990’s. Though cMUTs have not supplanted piezoelectric transducers for medical ultrasound imaging to date, researchers and engineers are ...
Carl D. Herickhoff, Rob van Schaijk
doaj   +1 more source

Hybrid Cell Structure for Wideband CMUT: Design Method and Characteristic Analysis

open access: yesMicromachines, 2021
Capacitive micromachined ultrasonic transducer (CMUT) is an ultrasonic transducer based on the microelectromechanical system (MEMS). Wideband CMUT has good application prospects in ultrasonic imaging, ultrasonic identification, flow measurement, and ...
Hongliang Wang   +6 more
doaj   +1 more source

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

open access: yes, 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.   +6 more
core   +1 more source

Wideband acoustic activation and detection of droplet vaporization events using a capacitive micromachined ultrasonic transducer. [PDF]

open access: yesJ Acoust Soc Am, 2016
An ongoing challenge exists in understanding and optimizing the acoustic droplet vaporization (ADV) process to enhance contrast agent effectiveness for biomedical applications.
Novell A   +3 more
europepmc   +2 more sources

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