Results 11 to 20 of about 30,372 (259)
Swimming using surface acoustic waves. [PDF]
PLoS ONE, 2013 Microactuation of free standing objects in fluids is currently dominated by the rotary propeller, giving rise to a range of potential applications in the military, aeronautic and biomedical fields.
Yannyk Bourquin, Jonathan M Cooper
doaj +4 more sources
Modulation of Surface Elastic Waves and Surface Acoustic Waves by Acoustic–Elastic Metamaterials
CrystalsMetamaterials enable the modulation of elastic waves or acoustic waves in unprecedented ways and have a wide range of potential applications. This paper achieves the simultaneous manipulation of surface elastic waves (SEWs) and surface acoustic waves ...
Chang Fu, Tian-Xue Ma
doaj +2 more sources
Surface acoustic wave microfluidics [PDF]
Lab on a Chip, 2013 The recent introduction of surface acoustic wave (SAW) technology onto lab-on-a-chip platforms has opened a new frontier in microfluidics. The advantages provided by such SAW microfluidics are numerous: simple fabrication, high biocompatibility, fast fluid actuation, versatility, compact and inexpensive devices and accessories, contact-free particle ...
Xiaoyun, Ding +10 more
openaire +2 more sources
The research of LWD acoustic isolator based on SAW spatial separation [PDF]
MATEC Web of Conferences, 2019 Acoustic logging while drilling (LWD) can extract P-wave and S-wave information from the formation. However, the transmission of the collar wave propagated directly from the emitter to the receiver may interfere with the P-wave and S-wave and affect the ...
Yang Peinian, Chen Dehua, Xiuming Wang
doaj +1 more source
Investigation of bulk acoustic microwaves excited by an interdigital transducer
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2015 Excitation of bulk and surface acoustic waves with the interdigital transducer (IDT), which is deposited on the surface of a piezoelectric crystal, is widely used in the development of devices in acoustoelectronics and in the design of the microwave ...
O. G. Reshotka +2 more
doaj +1 more source
Temperature-controlled acoustic surface waves
New Journal of Physics, 2016 Conventional approaches to the control of acoustic waves propagating along boundaries between fluids and hard grooved surfaces are limited to the manipulation of surface geometry.
Norbert Cselyuszka +3 more
doaj +1 more source
Dispersion of surface acoustic waves in thin films at extreme wavelength-to-thickness ratios [PDF]
JASA Express Letters, 2022 Surface acoustic waves (SAWs) are sensitive to the presence of a layer on the surface of a material, even if this layer is extremely thin compared to their wavelengths. Given the very slow propagation velocities of SAWs compared to electromagnetic waves,
Marc Duquennoy +4 more
doaj +1 more source
Electronics Letters, 1969 Two examples of filters using Rayleigh waves, at the frequencies of 25 MHz and 150 MHz, are described. The shape, almost rectangular, of the frequency response is determined by drawing one transducer.
E. Dieulesaint, P. Hartemann
openaire +1 more source
Simulation of Surface Acoustic Wave Devices [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2004 The Mason crossed-field circuit model is generalized to simulate apodized interdigital transducers without channel division. The apodized transducer model is based on the transmission line model, and the artificial transformer with different voltage and current coupling ratios is used to independently obtain the transfer function and radiation ...
openaire +2 more sources
Bending and splitting of spoof surface acoustic waves through structured rigid surface
Results in Physics, 2018 In this paper, we demonstrated that a 90°-bended imaging of spoof surface acoustic waves with subwavelength resolution of 0.316λ can be realized by a 45° prism-shaped surface phononic crystal (SPC), which is composed of borehole arrays with square ...
Sujun Xie +5 more
doaj +1 more source