Results 21 to 30 of about 749,316 (193)
MicromachinesCapacitive micromachined ultrasonic transducer (CMUT) has been widely studied due to its excellent resonance characteristics and array integration. This paper presents the first study of the CMUT electrostatic stiffness resonant accelerometer. To improve
Luhao Gou +7 more
doaj +2 more sources
Underwater Imaging Using a 1 × 16 CMUT Linear Array [PDF]
Sensors, 2016 A 1 × 16 capacitive micro-machined ultrasonic transducer linear array was designed, fabricated, and tested for underwater imaging in the low frequency range. The linear array was fabricated using Si-SOI bonding techniques.
Rui Zhang +5 more
doaj +4 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
Design and Fabrication of Multi-Frequency and Low-Quality-Factor Capacitive Micromachined Ultrasonic Transducers [PDF]
MicromachinesCapacitive micromachined ultrasonic transducers (CMUTs) have been developed for air-coupled applications to address key challenges such as noise, prolonged ringing, and side-lobe interference. This study introduces an optimized CMUT design that leverages
Amirhossein Moshrefi +3 more
doaj +2 more sources
3D cone-beam breast ultrasonic tomography imaging for capacitive micromachined ultrasonic transducer cylindrical array [PDF]
JASA 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
Nanotechnology and Precision Engineering, 2021 An air parametric array can generate a highly directional beam of audible sound in air, which has a wide range of applications in targeted audio delivery.
Xiaoli Zhang, Hui Zhang, Dachao Li
doaj +1 more source
Flexible transparent CMUT arrays for photoacoustic tomography
Optics Express, 2022 This paper reports the fabrication and characterization of the first flexible transparent capacitive micromachined ultrasound transducer (CMUT) array for through-illumination photoacoustic tomography. Fabricated based on an adhesive wafer bonding technique and a PDMS backfill approach, the array has a maximum transparency of 67% in visible light range ...
Mahyar Ghavami +2 more
openaire +2 more sources
Transmitting CMUT Arrays without a DC Bias [PDF]
2019 IEEE International Ultrasonics Symposium (IUS), 2019 This study focuses on design, simulation, fabrication and measurement of transmitting CMUT arrays with unbiased mode of operation. We presented a design procedure considering the radiation pattern, Rayleigh distance and the parameters of the large signal equivalent circuit, which can be applied for different operation frequencies and applications ...
Enhoş, Kerem +4 more
openaire +2 more sources
Investigation of the beam pattern of an integrated 2D CMUT spiral array element
, 2022 This work reports on the investigation of the element beam pattern of a 2D CMUT spiral array by finite element analysis, aiming at assessing the effect of the transducer integration with the ASIC on the fluid-coupled transmission performance.
Lamberti, P +6 more
core +2 more sources
CMUT array element in deep-collapse mode [PDF]
2011 IEEE International Ultrasonics Symposium, 2011 Collapse and deep-collapse mode of operations have boosted the pressure outputs of capacitive micromachined ul- trasonic transducers (CMUTs) considerably. In this work, we demonstrate a CMUT element operating in the deep-collapse mode with 25 V pulse excitation and without the effects of charge trapping.
Olcum, Selim +4 more
openaire +3 more sources