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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1109/TUFFC.2012.2484
|2 doi
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|a pubmed24n0743.xml
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|a eng
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|a Naumenko, Natalya F
|e verfasserin
|4 aut
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|a Effect of anisotropy on characteristics and behavior of shear horizontal SAWs in resonators using langasite
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 13.05.2013
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|a Date Revised 29.11.2012
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Orientations of langasite (LGS) with Euler angles (0°, μ, 90°) are potentially useful for applications in wireless SAW sensors because of wide variation of their temperature coefficient of frequency (TCF), between -50 and +50 ppm/°C, combined with high values of electromechanical coupling coefficient, especially if thick electrodes are utilized. The nature and characteristics of shear-horizontally polarized SAWs (SHSAWs) propagating in these orientations are investigated using a combination of numerical techniques: analysis of the BAW slowness surface and its effect on the SH-SAW structure; visualization of displacements that follow wave propagation in the grating; calculation of admittance of infinite periodic gratings; and analysis of SAW dispersion in the gratings, including possible interaction between SH-SAWs and parasitic Rayleigh SAWs. The characteristics of SH-SAWs propagating in symmetric cuts (velocities, localization depth, electromechanical coupling, etc.) are supplemented by analysis of propagation directions deviating from the YZ-plane toward the x-axis of LGS, for the temperature compensated cut with Euler angles (0°, 22°, 90°) and one more orientation for comparison. This extended analysis reveals that in actual devices, the anisotropy may be a reason for strong interaction between SH-SAWs and parasitic Rayleigh SAWs and cause degradation of the device's performance
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|a Journal Article
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|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 59(2012), 11 vom: 28. Nov., Seite 2515-21
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
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|g volume:59
|g year:2012
|g number:11
|g day:28
|g month:11
|g pages:2515-21
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|u http://dx.doi.org/10.1109/TUFFC.2012.2484
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|d 59
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|h 2515-21
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