Analysis of Generation and Detection of Surface and Bulk Acoustic Waves by Interdigital Transducers

Milsom, R.F.; Reilly, N.H.C.; Redwood, M.

doi:10.1109/t-su.1977.30925

Cited by 325 publications

(92 citation statements)

References 22 publications

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“…θ is the rotating angle. The elastic and piezoelectric constants were taken from the work of R. Zhang, et al 12 The effective permittivity ε( β, ω) 13,14 gives the spectrum Q( β) of surface charge excited by E( β) of the surface electric field normal to the surface, namely,…”

Section: Resultsmentioning

confidence: 99%

Suppression of Rayleigh wave spurious signal in ultra-wideband surface acoustic wave devices employing 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 single crystals

Xiao

Chen

et al. 2017

AIP Advances

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The propagation characteristics of surface acoustic waves (SAWs) on rotated Y-cut X-propagating 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3(PMN-33%PT) substrate are theoretically analyzed. It is shown that besides the existence of a shear horizontal (SH) SAW with ultrahigh electromechanical coupling factor K2, a Rayleigh SAW also exists causing strong spurious response. The calculated results showed that the spurious Rayleigh SAW can be sufficiently suppressed by properly selecting electrode and its thickness with optimized rotating angle while maintaining large K2 of SH SAW. The fractional -3 dB bandwidth of 47% is achievable for the ladder type filter constructed by Au IDT/48oYX-PMN-33%PT resonators.

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Section: Resultsmentioning

confidence: 99%

Suppression of Rayleigh wave spurious signal in ultra-wideband surface acoustic wave devices employing 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 single crystals

Xiao

Chen

et al. 2017

AIP Advances

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“…Analysis of the lower and upper multilayered half-spaces is considered completed when the wave structure has been determined at z=0 and z=h m , where h m is a metal film thickness, and the surface impedance matrices () s k can be calculated at z=0 (Ingebrigtsen, 1969;Milsom et al, 1977). This function relates the electric charge σ at the surface to the electrostatic potential ϕ ,…”

Section: An Advanced Numerical Technique For Analysis Of Acoustic Wavmentioning

confidence: 99%

Multilayered Structure as a Novel Material for Surface Acoustic Wave Devices: Physical Insight

Naumenko¹

2011

Acoustic Waves - From Microdevices to Helioseismology

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“…Green's function [29][30][31], spectral domain representation [32] and even conformal mapping [33] for simpler geometries. By using C t = Q/V, the total static capacitance can be computed from the charge.…”

Section: Static Idt Capacitancementioning

confidence: 99%

Shear horizontal surface acoustic wave microsensor for Class A viral and bacterial detection.

Branch¹,

Huber²,

Brozik³

et al. 2008

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The rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms is critical to human health and safety. To achieve a high level of sensitivity for fluidic detection applications, we have developed a 330 MHz Love wave acoustic biosensor on 36° YX Lithium Tantalate (LTO). Each die has four delay-line detection channels, permitting simultaneous measurement of multiple analytes or for parallel detection of single analyte containing samples. Crucial to our biosensor was the development of a transducer that excites the shear horizontal (SH) mode, through optimization of the transducer, minimizing propagation losses and reducing undesirable modes. Detection was achieved by comparing the reference phase of an input signal to the phase shift from the biosensor using an integrated electronic multi-readout system connected to a laptop computer or PDA. The Love wave acoustic arrays were centered at 330 MHz, shifting to 325-328 MHz after application of the silicon dioxide waveguides. The insertion loss was −6 dB with an out-of-band rejection of 35 dB. The amplitude and phase ripple were 2.5 dB p-p and 2-3° p-p, respectively. Time-domain gating confirmed propagation of the SH mode while showing suppression of the triple transit. Antigen capture and mass detection experiments demonstrate 4 a sensitivity of 7.19 ± 0.74 ° mm 2 / ng with a detection limit of 6.7 ± 0.40 pg / mm 2 for each channel.5 CONTENTS

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Analysis of Generation and Detection of Surface and Bulk Acoustic Waves by Interdigital Transducers

Cited by 325 publications

References 22 publications

Suppression of Rayleigh wave spurious signal in ultra-wideband surface acoustic wave devices employing 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 single crystals

Suppression of Rayleigh wave spurious signal in ultra-wideband surface acoustic wave devices employing 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 single crystals

Multilayered Structure as a Novel Material for Surface Acoustic Wave Devices: Physical Insight

Shear horizontal surface acoustic wave microsensor for Class A viral and bacterial detection.

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