Refraction and reflection of ultrasonic surface waves by thin-gold-film layers on lithium-niobate substrates

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Refraction and reflection of ultrasonic surface waves by thin-gold-film layers on lithium-niobate substrates

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© The Institution of Electrical Engineers
Published

Acoustic-surface-wave phenomena similar to optical refraction and total internal reflection have been observed in thin metal prisms deposited on y cut lithium niobate. In addition, scattering of the surface waves has been observed both at the boundaries and interior of the gold-film prisms. The observed total internal reflection and refraction angles were found to agree with theoretical predictions.

Inspec keywords: gold; ultrasonic reflection; surface phenomena; ultrasonic propagation; films; ultrasonic refraction; thin films; optical prisms; lithium compounds

Subjects: Acoustic wave devices; Acoustic properties of solids; Electrical properties of thin films, low-dimensional and nanoscale structures; Surfaces and interfaces; thin films and whiskers

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