A Review of UltraHigh Frequency Ultrasonic Transducers
Frontiers in Materials, 2022 The ultrahigh-frequency (UHF) ultrasonic transducers are active in various fields, including nondestructive evaluation in the semiconductor industry, microscopic biological organization imaging in biomedicine, particle manipulation, and so on.
Jun Chen +8 more
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Generation of Sound Bullets with a Nonlinear Acoustic Lens [PDF]
, 2009 Acoustic lenses are employed in a variety of applications, from biomedical imaging and surgery, to defense systems, but their performance is limited by their linear operational envelope and complexity.
Daraio, Chiara, Spadoni, Alessandro
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Experimental investigation of inter-element isolation in a medical array transducer at various manufacturing stages [PDF]
, 2016 This work presents the experimental investigation of vibration maps of a linear array transducer with 192 piezoelements by means of a laser Doppler vibrometer at various manufacturing finishing steps in air and in water.
Bini, Fabiano +2 more
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Analysis of dynamic high-frequency acoustic field control by metasurfaces lens
AIP Advances, 2019 Acoustic metasurfaces have largely been explored for acoustic field modulation, but because of their structural complexity, they are mainly implemented for airborne low frequency sound and generally located in the transmission medium, acting as a ...
Xinyu Yang +7 more
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Ejection Characteristics and Drop Modulation of Acoustic Inkjet Printing Using Fresnel Lens
Journal of Fluid Science and Technology, 2009 Acoustic Inkjet Printing uses an acoustic beam focused on a free liquid surface for drop ejection. This method can eject small drops without precise nozzle fabrication in comparison with thermal inkjet and piezoelectric inkjet.
Toshinobu HAMAZAKI, Naoki MORITA
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Theoretical analysis of the focusing of acoustic waves by two-dimensional sonic crystals [PDF]
, 2002 Motivated by a recent experiment on acoustic lenses, we perform numerical calculations based on a multiple scattering technique to investigate the focusing of acoustic waves with sonic crystals formed by rigid cylinders in air.
Bikash C. Gupta +32 more
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Parametric Acoustic Lens Sonar [PDF]
The Journal of the Acoustical Society of America, 1974 Sum and difference frequency parametric arrays are usually generated in the field of relatively large planar electroacoustic transducers by the transmission of two high-frequency primary waves. The approach taken in the present paper utilizes one or more small transducers located on the focal surface of a relatively large acoustic lens. Upon projection,
T. G. Muir, D. L. Folds
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Sonic crystal lenses that obey Lensmaker's formula [PDF]
, 2003 This paper presents a theoretical study of the phenomenon of acoustic imaging by sonic crystals, which are made of two-dimensional regular arrays of rigid cylinders placed in parallel in air.
Beaver W L +19 more
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2D phononic-crystal Luneburg lens for all-angle underwater sound localization
Acta Acustica, 2022 Phononic crystals are well known for acoustic wave manipulation which may have potential application in an underwater acoustic detection system. In this work, we design and simulate a two-dimensional Luneburg lens based on gradient-index (GRIN) phononic ...
Ruan Yongdu, Liang Xu
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Numerical calculation and measurement for the focus field of concave spherical acoustic lens transducer [PDF]
MATEC Web of Conferences, 2019 How to accurately calculate the sound field formed by acoustic lenses is an important basis for the design of acoustic lens transducers. The radiation sound field distribution of the physical model of acoustics lens is simulated by numerical methods ...
Zhang Jun, Chen Yi, Yang Liuqing
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