Results 111 to 120 of about 1,397 (173)

Driving Rotational Circulation in a Microfluidic Chamber Using Dual Focused Surface-Acoustic-Wave Beams. [PDF]

Micromachines (Basel)
Hsu JC, Liao KL.
europepmc   +1 more source

High-resolution high-throughput spatiotemporal strain imaging reveals loss mechanisms in a surface acoustic wave device. [PDF]

Nat Commun
Zhou T, Reinhardt A, Bousquet M, Eymery J, Leake S, Holt MV, Evans PG, Schülli T.   +7 more
europepmc   +1 more source

An acoustofluidic embedding platform for rapid multiphase microparticle injection. [PDF]

Nat Commun
Zhong R, Xu X, Tutoni G, Liu M, Yang K, Li K, Jin K, Chen Y, Mai JDH, Becker ML, Huang TJ.   +10 more
europepmc   +1 more source

Ultrasound-Guided Botulinum Toxin Injections for Hand Spasticity: A Technical Guide for the Dorsal Approach. [PDF]

Toxins (Basel)
Malfitano C, Robecchi Majnardi A, Pesaresi A, Ricci V.   +3 more
europepmc   +1 more source

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Acoustic focusing device with an interdigital transducer

Journal of the Acoustical Society of America, 1977
We have devised a new type of simple acoustic focusing device with an interdigital transducer in which all radiation from each section of the transducer constructively interferes at a focal point in water. The position of the focal point of the device is variable by changing the carrier frequency of an electrical signal applied to the transducer.
Toda Kohji
exaly   +2 more sources

Algorithm for optimization of interdigital transducer in AOTF

Optics and Laser Technology, 2007
Abstract The interdigital transducer is an important device element in acousto-optic tunable filter (AOTF) and the surface acoustic wave (SAW) propagates in lithium niobate (LiNbO3) as a substrate in interdigital transducer. In the direction of x-cut y propagation in AOTF, the power-flux vector and propagation direction of the surface wave are not ...
Limin Zhang, Jisheng Yang
exaly   +2 more sources

SAW Filters Employing Interdigitated Interdigital Transducers, IIDT

1982 Ultrasonics Symposium, 1982
Over the p ast decade a vast effort by numerous groups has produced a wide range of SA\! filters with impressive performance characteristics. Unfortunately most such filters have losses of 20 to 30 dB, which makes them unsuitable for frontend applications.
P M, Smith, C K, Campbell
openaire   +3 more sources

Superconducting interdigital transducers

Proceedings of IEEE Ultrasonics Symposium ULTSYM-94, 1994
A 50 MHz surface acoustic wave (SAW) delay line consisting of two interdigital transducers (IDTs) has been fabricated from a thin film of YBa2Cu3O7-d, a high temperature superconductor, deposited on YZ LiNbO3. The insertion loss measured as a function of temperature shows a large improvement (~12 dB) at the superconducting transition.
null Feller, null Levy, null Sarma, null Fredricksen, null Ritums, null Wu, null Li, null Ignatiev   +7 more
openaire   +1 more source

Circular interdigital transducers

Journal of Applied Physics, 1990
The purpose of this article is to establish the focusing properties of a new kind of transducer consisting of circular electrodes deposited on an isotropic substrate and covered by a thin piezoelectric layer. We first express the electromechanical equations of the device and determine its boundary conditions.
S. Barbaid, J. Duclos, M. Leduc
openaire   +1 more source

Analysis and design of focused interdigital transducers

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2005
Focused interdigital transducers (FIDTs) can generate surface acoustic wave (SAW) with high intensity and high beamwidth compression ratio. Owing to these features, they are very suitable to be used as the sources of microacoustic channels or waveguides in the near future. The focusing properties of FIDTs are dominated solely by their geometric shapes.
Tsung-Tsong, Wu, He-Tai, Tang, Yung-Yu, Chen, Pei-Ling, Liu   +3 more
openaire   +2 more sources