Superconducting interdigital transducers

Feller, J. R.; Levy, M.; Sarma, Bimal K.; Fredricksen, H.P.; Ritums, D.; Wu, N. J.; Li, X.Y.; Ignatiev, A.

doi:10.1109/ultsym.1994.401768

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1997

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“…Periodic metal strips can form interdigital transducers, like these employed in SAW devices. It is also conceivable that, instead of the metal sheet, a fragile sheet of high-temperature superconductor 3 can be used. PIW has not yet been investigated experimentally.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric interfacial waves in lithium niobate and other crystals

Laprus

Danicki

1997

Journal of Applied Physics

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Piezoelectric acoustic boundary waves in the structure of multilayer thin films/electrode/piezoelectric substrates Waves propagating along a perfectly conducting plane embedded in a piezoelectric medium are investigated. The theory of such waves is given, and numerical calculations are described. The conditions of existence and the properties of the waves are presented for trigonal lithium niobate, langasite, and cubic dilithium tetraborate. The numerical analysis shows that the waves exist for many orientations of the conducting plane with respect to the crystallographic axes, and for many directions of propagation. The wave velocity is close to that of the slowest bulk wave for the same direction, and the piezoelectric coupling coefficient can be as high as 3.60% for lithium niobate, 0.25% for langasite, and 1.60% for dilithium tetraborate.

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Section: Introductionmentioning

confidence: 99%