Results 31 to 40 of about 1,251 (192)
Zeitschrift 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
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Wideband acoustic activation and detection of droplet vaporization events using a capacitive micromachined ultrasonic transducer. [PDF]
J 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
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Hybrid Cell Structure for Wideband CMUT: Design Method and Characteristic Analysis
Micromachines, 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
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Receive-Noise Analysis of Capacitive Micromachined Ultrasonic Transducers [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016 This paper presents an analysis of thermal (Johnson) noise received from the radiation medium by otherwise noiseless capacitive micromachined ultrasonic transducer (CMUT) membranes operating in their fundamental resonance mode. Determination of thermal noise received by multiple numbers of transducers or a transducer array requires the assessment of ...
Ayhan Bozkurt, G. Goksenin Yaralioglu
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Capacitive Micromachined Ultrasonic Transducers for Therapeutic Ultrasound Applications [PDF]
IEEE Transactions on Biomedical Engineering, 2010 Therapeutic ultrasound guided by MRI is a noninvasive treatment that potentially reduces mortality, lowers medical costs, and widens accessibility of treatments for patients. Recent developments in the design and fabrication of capacitive micromachined ultrasonic transducers (CMUTs) have made them competitive with piezoelectric transducers for use in ...
Serena H. Wong +4 more
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A new detection method for capacitive micromachined ultrasonic transducers [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2001 Capacitive micromachined ultrasonic transducers (cMUT) have become an alternative to piezoelectric transducers in the past few years. They consist of many small circular membranes that are connected in parallel. In this work, we report a new detection method for cMUTs.
Ergun, A. S. +3 more
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A modular FPGA-based ultrasonic array system for applications including non-destructive testing [PDF]
, 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
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Deep-collapse operation of capacitive micromachined ultrasonic transducers [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011 Capacitive micromachined ultrasonic transducers (CMUTs) have been introduced as a promising technology for ultrasound imaging and therapeutic ultrasound applications which require high transmitted pressures for increased penetration, high signal-to-noise ratio, and fast heating. However, output power limitation of CMUTs compared with piezoelectrics has
Olcum, S. +3 more
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A theoretical model of a new electrostatic transducer incorporating fluidic amplification [PDF]
, 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. +9 more
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Radiation impedance of collapsed capacitive micromachined ultrasonic transducers [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2012 The radiation impedance of a capacitive micromachined ultrasonic transducer (CMUT) array is a critical parameter to achieve high performance. In this paper, we present a calculation of the radiation impedance of collapsed, clamped, circular CMUTs both analytically and using finite element method (FEM) simulations.
Ozgurluk, A. +3 more
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