Results 81 to 90 of about 7,225,697 (246)
Contactless Ultrasonic Wavefield Imaging to Visualize Near-Surface Damage in Concrete Elements
Applied Sciences, 2019 We present work to detect and visualize near-surface damage in concrete using contactless ultrasonic wavefield imaging technology. A fully contactless ultrasonic scanning system that utilizes a micro-electro-mechanical systems (MEMS) ultrasonic ...
Homin Song, John S. Popovics
doaj +1 more source
Journal of Biomedical Optics, 2017 . Photoacoustic computed tomography (PACT) and ultrasound computed tomography (USCT) are emerging modalities for breast imaging. As in all emerging imaging technologies, computer-simulation studies play a critically important role in developing and ...
Yang Lou +4 more
semanticscholar +1 more source
International Journal of NanomedicineYadong Liu,1,2,* Huiyan Lv,3,* Yaodong Chen,4,* Shazhou Ye,1 Zhong Zheng,1 Lei Chen,1 Zejun Yan,1 Xingyi Li5 1Department of Urology, The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang, People’s Republic of China;
Liu Y +7 more
doaj
Ultrasound assisted particle and cell manipulation on-chip [PDF]
, 2013 Ultrasonic fields are able to exert forces on cells and other micron-scale particles, including microbubbles. The technology is compatible with existing lab-on-chip techniques and is complementary to many alternative manipulation approaches due to its ...
Cochran, Sandy +2 more
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Multi-functional Ultrasonic Micro-elastography Imaging System
Scientific Reports, 2017 In clinical decision making, in addition to anatomical information, biomechanical properties of soft tissues may provide additional clues for disease diagnosis.
Xuejun Qian +5 more
semanticscholar +1 more source
, 2013 This work describes a new approach to impedance matching for ultrasonic transducers. A single matching layer with high acoustic impedance of 16 MRayls is demonstrated to show a bandwidth of around 70%, compared with conventional single matching layer ...
Harris, N.R., Qian, Yi Chen
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Monitoring fatigue crack growth using nonlinear ultrasonic phased array imaging
, 2017 Nonlinear imaging techniques have recently emerged which have the potential to detect material degradation and challenging defects, such as closed cracks.
Jingwei Cheng +3 more
semanticscholar +1 more source
A digital ultrasonic system for small animal imaging
, 2009 [[abstract]]© 2004 Elsevier-In this paper, a 50 MHz digital ultrasonic imaging system designed for small animals and its applications to mouse embryos and tumors are presented.
Meng-Lin Li; Yen-Fu Chen; Wei-Jung Guan; Pai-Chi Li +1 more
core
A new flextensional piezoelectric ultrasonic motor - design, fabrication and characterisation
, 2007 This paper presents the techniques used for the characterisation of a new type of standing-wave piezoelectric ultrasonic motor. The motor uses a metallic flextensional amplifier, or “cymbal”, to convert the radial mode vibrations of a piezoelectric ...
Wilson, Stephen +7 more
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Flextensional ultrasonic motor using the contour mode of a square piezoelectric plate [PDF]
, 2004 This paper presents the design, fabrication, and characterization of a new type of standing wave piezoelectric ultrasonic motor. The motor uses a metallic flextensional amplifier, or cymbal, to convert the contour mode vibrations of a square ...
Leinvuo, J T +5 more
core +1 more source