Scanning phononic lattices with surface acoustic waves

Vines, R. E.; Wolfe, J. P.

doi:10.1016/s0921-4526(98)01258-7

Cited by 13 publications

(12 citation statements)

References 3 publications

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“…3 However, investigations on surface wave properties of solids in which the periodic modulation occurs on the traction free surface has not started until recently. 4 -8 Vinces et al 4,5 studied experimentally the surface waves generated by a linefocus acoustic lens at the water-loaded surfaces of a number of two-dimensional superlattices that intersect the surface normally. Propagation of Scholte-like acoustic waves at the liquid-loaded surfaces of period structures has also been studied.…”

Section: Introductionmentioning

confidence: 99%

Surface and bulk acoustic waves in two-dimensional phononic crystal consisting of materials with general anisotropy

2004

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Successful application of photonic crystals has led recently to a rapidly growing interest in the analogous acoustic effects in periodic elastic structures called phononic crystals. This study is aimed at developing a theory for two-dimensional phononic crystal consisting of materials with general anisotropy. Explicit formulations of the plane harmonic bulk wave and the surface wave dispersion relations in such a general phononic structure are derived based on the plane wave expansion method. Two-dimensional phononic structures with either the square or the hexagonal lattice are considered in the numerical examples. Band gap characteristics of the phononic structures with different anisotropic background materials ͑isotropic, cubic, hexagonal, and ortho-rhombic͒ are calculated and discussed.

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Section: Introductionmentioning

confidence: 99%

Surface and bulk acoustic waves in two-dimensional phononic crystal consisting of materials with general anisotropy

2004

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“…Investigations into surface wave properties of solids in which the periodic modulation occurs on the traction-free surface did not take place until quite recently [31][32][33][34][35][36][37]. The calculations for surface waves on a square and hexagonal superlattice consisting of cubic (AlAs/GaAs) and isotropic (Al/polymer) materials were reported [31,32].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Wu et al [33] studied the phononic band gaps of both of the surface and bulk acoustic modes in twodimensional phononic structures consisting of general anisotropic materials. Some literatures aimed at studying the surface acoustic waves in phononic structures experimentally [34][35][36][37][38]. Vinces et al [34,35] conducted an experimental study on the surface waves generated by a linefocus acoustic lens at the water-loaded surfaces of a number of two-dimensional superlattices that intersect the surface normally.…”

Section: Introductionmentioning

confidence: 99%

“…Some literatures aimed at studying the surface acoustic waves in phononic structures experimentally [34][35][36][37][38]. Vinces et al [34,35] conducted an experimental study on the surface waves generated by a linefocus acoustic lens at the water-loaded surfaces of a number of two-dimensional superlattices that intersect the surface normally. The propagation of Scholte-like acoustic waves at the liquid-loaded surfaces of periodic structures has also been studied [36].…”

Section: Introductionmentioning

confidence: 99%

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Surface acoustic wave band gaps in micro-machined air/silicon phononic structures — theoretical calculation and experiment

Wu¹,

Huang²,

Liu³

2005

Zeitschrift Für Kristallographie - Crystalline Materials

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Abstract. In this paper, we investigate the band gaps of micro-machined air/silicon phononic structures both theoretically and experimentally. Based on the plane wave expansion method, dispersion relations of the surface and bulk modes with square lattices in air/silicon two-dimensional phononic structures are calculated and discussed. Band gap widths due to the filling fraction and temperature variation are also analyzed. On the experimental side, generation and reception of high frequency surface acoustic wave in this band structure are realized by a pair of interdigital transducers (IDT) with frequency around 200 MHz. Details of the fabricating process of the phononic structure and the high frequency surface wave generating and receiving IDTs are given. The results demonstrate clearly the existence of SAW band gap in the micro-machined phononic structure and this study may serve as a basis for studying the band gap of SAW in micro-machined phononic structure with the dimension in the order of micrometer and find applications in the RF SAW devices.

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“…Measurements and calculations of SAW localization have been reported in one-dimensional Fibonacci superlattices, 4 as well as in 2D periodic elastic structures. 5,6 The most common tool for local probing of SAW scattering 7 and localization 8 experiments are laser-optical methods. Using noncontacting optical excitation and detection schemes, the acoustic wave dispersion of phononic crystals can be mapped out conveniently.…”

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confidence: 99%

High-resolution imaging of surface acoustic wave scattering

Hesjedal

Behme

2001

Applied Physics Letters

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We examine the scattering of surface acoustic waves (SAWs) by single dots, periodic and locally damped two-dimensional dot lattices. Employing the scanning acoustic force microscope, SAW fields are imaged with nanometer resolution. We study the influence of a roughly wavelength-sized single dot on SAW diffraction. In order to distinguish between forward- and backscattered components, we insonify the dot with the pump and probe beam under 0° and 90°. We furthermore analyze the SAW diffraction by a regular dot array. The wave field appears to be localized around the dots. Adding surface distortions, the regular SAW localization pattern brakes down in the vicinity of the distortion.

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Scanning phononic lattices with surface acoustic waves

Cited by 13 publications

References 3 publications

Surface and bulk acoustic waves in two-dimensional phononic crystal consisting of materials with general anisotropy

Surface and bulk acoustic waves in two-dimensional phononic crystal consisting of materials with general anisotropy

Surface acoustic wave band gaps in micro-machined air/silicon phononic structures — theoretical calculation and experiment

High-resolution imaging of surface acoustic wave scattering

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