Results 11 to 20 of about 2,502 (194)
Designing circular CMUT cells using CMUT biasing chart [PDF]
2012 IEEE International Ultrasonics Symposium, 2012 A very accurate equivalent circuit model for circular CMUT cell is recently proposed. As a consequence of this model, the operating characteristics of the cell is derived and presented as a biasing chart for CMUTs. We discuss these operating characteristics and show how the coupling coefficient can be derived from the model.
Köymen, Hayrettin +2 more
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Development of 4G CMUT (CMUT Linear SML44 probe) [PDF]
Advanced Ultrasound in Diagnosis and Therapy, 2020 In 2009, Hitachi commercialized “Mappie*1, the world’s first Capacitive Micro-machined Ultrasound Transducer (CMUT) using semiconductor based technology. It generated high quality diagnostic images of mammary glands, thanks to its broad-band characteristics[1].
Tsuyoshi Otake, Hiroki Tanaka, Akifumi Sako, Makoto Fukada, Kengo Imagawa, Masahiro Sato
openaire +1 more source
Rayleigh–bloch waves in CMUT arrays [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2014 Using the small-signal electrical equivalent circuit of a capacitive micromachined ultrasonic transducer (CMUT) cell, along with the self and mutual radiation impedances of such cells, we present a computationally efficient method to predict the frequency response of a large CMUT element or array.
Atalar, A., Köymen H., Oğuz H.
openaire +6 more sources
Pull-in Analysis of CMUT Elements
2020 IEEE International Ultrasonics Symposium (IUS), 2020 This paper presents a novel characterization method for the pull-in voltage of a Capacitive Micromachined Ultrasonic Transducer (CMUT) element. The presented method allows pull-in estimation of all CMUT cells contained in an element, which is in contrast to conventional methods that only allows for a pull-in average across an element.
Havreland, Andreas Spandet +3 more
openaire +2 more sources
Characterization of a CMUT Array [PDF]
, 2012 Ultrasound transducers are used in a broad range of applications covering from underwater communications to medical imaging and treatment. The ultrasonic transducer determines the key specifications such as resolution, sensitivity and signal to noise ratio.
Zure, Tugrul
core +4 more sources
Forward-viewing CMUT arrays for medical imaging
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2004 This paper reports the design and testing of forward-viewing annular arrays fabricated using capacitive micromachined ultrasonic transducer (CMUT) technology. Recent research studies have shown that CMUTs have broad frequency bandwidth and high-transduction efficiency.
Demirci, Utkan +4 more
openaire +3 more sources
Echographic Images Improvements with a CMUT Probe
, 2007 The validity of cMUT (capacitive Micromachined Ultrasonic Transducer) technology for medical imaging applications has been proved by many authors. The large bandwidth obtained with cMUT leads to improved image resolution compared to their piezoelectric counterpart. Recently, our laboratory (Aculab) has developed a flexible cMUT technology (the “Reverse”
CALIANO, Giosue' +5 more
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Fabrication and Integration of CMUT Sensors
, 2017 Capacitive micromachined ultrasound transducers (CMUTs) are a promising replacement technology for piezoelectric composite transducers, as they offer a more flexible architecture, wider signal bandwidth, and improved impedance matching between the sensor and the sensing medium.
Greenlay, Benjamin A
openaire +2 more sources
Pre-snapback mode operation of CMUT for enhanced acoustic performance. [PDF]
Microsyst NanoengCapacitive micromachined ultrasonic transducers (CMUTs) offer advantages over traditional piezoelectric devices for ultrasound applications, including broader bandwidth, miniaturization, and electronics integration, but are limited by low acoustic ...
Park S +5 more
europepmc +2 more sources
Research on Drive and Detection Technology of CMUT Multi-Array Transducers Based on MEMS Technology. [PDF]
Micromachines (Basel)This paper presents an ultrasonic driving and detection system based on a CMUT array using MEMS technology. Among them, the core component CMUT array is composed of 8 × 8 CMUT array elements, and each CMUT array element contains 6 × 6 CMUT units.
Li C +11 more
europepmc +2 more sources