Results 1 to 10 of about 23,736 (254)

Calibration of Ultrasonic Transducer Based on Ultrasonic Logging Instrument for Shaft Sinking [PDF]

open access: yesSensors, 2022
High-precision logging equipment is critical for measuring the borehole diameter and drilling offset in coal mining and petroleum drilling. We propose a module composition and positioning principle for an ultrasonic transducer based on an ultrasonic ...
Maoyong Cao   +5 more
doaj   +4 more sources

Design of Piezoelectric Ultrasonic Transducer Based on Doped PDMS [PDF]

open access: yesSensors, 2021
The performance of the ultrasonic transducer will directly affect the accuracy of ultrasonic experimental measurement. Therefore, in order to meet the requirements of a wide band, a kind of annular 2-2-2 piezoelectric composite is proposed based on doped
Ran Yang   +3 more
doaj   +4 more sources

Electromechanical Dynamics Model of Ultrasonic Transducer in Ultrasonic Machining Based on Equivalent Circuit Approach

open access: yesSensors, 2019
Ultrasonic transducer is a piezoelectric actuator that converts AC electrical energy into ultrasonic mechanical vibration to accelerate the material removal rate of workpiece in rotary ultrasonic machining (RUM).
Jian-Guo Zhang   +4 more
doaj   +3 more sources

PMN-PT/Epoxy 1-3 composite based ultrasonic transducer for dual-modality photoacoustic and ultrasound endoscopy

open access: yesPhotoacoustics, 2019
Endoscopic dual-modality photoacoustic (PA) and ultrasound (US) imaging has the capability of providing morphology and molecular information simultaneously.
Yan Li   +8 more
doaj   +3 more sources

Planar ultrasonic transducer based on a metasurface piezoelectric ring array for subwavelength acoustic focusing in water [PDF]

open access: yesScientific Reports, 2022
The development of a new ultrasonic transducer capable of improved focusing performance has become a necessity to overcome the limitations of conventional ultrasonic transducer technology.
Shin Hur   +5 more
doaj   +2 more sources

Development of a 16-Channel Broadband Piezoelectric Micro Ultrasonic Transducer Array Probe for Pipeline Butt-Welded Defect Detection [PDF]

open access: yesSensors, 2022
Butt welding is extensively applied in long-distance oil and gas pipelines, and it is of great significance to conduct non-destructive ultrasonic testing of girth welds in order to avoid leakage and safety accidents during pipeline production and ...
Bolun Li   +6 more
doaj   +2 more sources

Multipoint Energy-Balanced Laser-Ultrasonic Transducer Based on a Thin-Cladding Fiber [PDF]

open access: yesSensors
This study proposes a novel multipoint transducer system by utilizing the single-mode-multimode-thin-cladding fiber (SMTC) structure. This structure leverages the disparity in mode field diameter between the multimode fiber (MMF) and thin-cladding fiber (
Shengnan Zhou   +3 more
doaj   +2 more sources

Review of Ultrasonic Particle Manipulation Techniques: Applications and Research Advances

open access: yesMicromachines, 2023
Ultrasonic particle manipulation technique is a non-contact label-free method for manipulating micro- and nano-scale particles using ultrasound, which has obvious advantages over traditional optical, magnetic, and electrical micro-manipulation techniques;
Shuai Wang   +3 more
doaj   +1 more source

Focused Ultrasound Stimulates ER Localized Mechanosensitive PANNEXIN-1 to Mediate Intracellular Calcium Release in Invasive Cancer Cells

open access: yesFrontiers in Cell and Developmental Biology, 2020
Focused ultrasound (FUS) is a rapidly developing stimulus technology with the potential to uncover novel mechanosensory dependent cellular processes. Since it is non-invasive, it holds great promise for future therapeutic applications in patients used ...
Nan Sook Lee   +14 more
doaj   +1 more source

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