High frequency one-dimensional phononic crystal characterized with a picosecond transient grating photoacoustic technique

Lisa Dhar, John A. Rogers

Research output: Contribution to journalArticle

Abstract

Periodic patterns of relief defined on a substrate using conventional lithographic techniques are phononic crystals for surface localized acoustic waves. Picosecond transient grating characterization of the acoustic behavior of Rayleigh waves in structures of binary, one-dimensional patterns of relief with feature sizes of a few microns show that these crystals exhibit complete phononic band gaps at frequencies of a few tenths of a gigahertz. These types of structures could be useful for applications in surface acoustic wave devices; understanding their acoustic behavior will help to establish strategies for transient grating examination of complex microstructures.

Original languageEnglish (US)
Pages (from-to)1402-1404
Number of pages3
JournalApplied Physics Letters
Volume77
Issue number9
DOIs
StatePublished - Aug 28 2000

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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