High-efficient acoustic wave rectifier

Krishnan, Ramya; Shirota, S; Tanaka, Yukihiro; Nishiguchi, Norihiko

doi:10.1016/j.ssc.2007.08.036

Cited by 38 publications

(33 citation statements)

References 3 publications

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“…[14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] Because the vibrations inducing the structural deformation have a lower frequency than thermal phonons and propagate ballistically in comparison with them, we need an elastic-wave rectifier [31][32][33][34][35][36] rather than the thermal rectifier in order to achieve the expected performance of the nano-device, NEMS and so on.…”

Section: Introductionmentioning

confidence: 99%

“…However, we found numerically that the z-polarized transverse acoustic (TA) waves are well rectified by the scatterers. 34,35 The rectification mechanism is as follows; because of the periodic arrangement of scatterers, the y-component of wave vector is allowed to be discrete; G y,n ¼ np/a (n ¼ 0, 61, 62,…), so that the dispersion relation of the acoustic waves has a subband structure, i.e.,…”

Section: Introductionmentioning

confidence: 99%

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Rectification of elastic waves in a thin plate

Tanaka

Murai

Nishiguchi

2012

Journal of Applied Physics

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Quantitative measurement of in-plane cantilever torsion for calibrating lateral piezoresponse force microscopy Rev. Sci. Instrum. 82, 113706 (2011) Decay rate estimates for the quasi-linear Timoshenko system with nonlinear control and damping terms J. Math. Phys. 52, 093502 (2011) Surface effects on frequency analysis of nanotubes using nonlocal Timoshenko beam theory J. Appl. Phys. 108, 093503 (2010) Effect of local solid reaction on diffusion-induced stress J. Appl. Phys. 107, 103516 (2010) The role of elastic flap deformation on fluid mixing in a microchannel Phys. Fluids 22, 052003 (2010) Additional information on J. Appl. Phys. We propose a rectifier of elastic waves in a thin plate, which is made of an elastically isotropic material containing a periodic array of triangular holes as scatterers, and demonstrate numerically that it works both for the symmetric and anti-symmetric Lamb waves as well as shear horizontal waves. The rectification is caused by the geometric effects on wave scattering due to the asymmetric scatterers, while the interplay between the mode conversion and interference effects among the scattered waves owing to the periodic arrangement of scatterers complicates it. The mechanism makes it possible to rectify the typical elastic waves in the system above the threshold frequency corresponding to the wavelength equivalent to the periodicity of scatterers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rectification of elastic waves in a thin plate

Tanaka

Murai

Nishiguchi

2012

Journal of Applied Physics

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“…Thus, the extended range of material parameters provided by metamaterials has lead to the implementation of devices such as acoustic lenses [1][2][3][4][5][6] , or even exotic structures designed using coordinate transformation methods 7,8 . Recently, significant attention has been given to unidirectional devices that pass acoustic energy in only one direction [9][10][11][12][13][14][15] and therefore mimic the general behaviour of diodes in the microwave regime, and Faraday rotator media in the optical domain.…”

mentioning

confidence: 99%

“…In this article, we take the more conservative approach of Maznev et al 16 and only consider non-reciprocal media capable of breaking the transmission symmetry property, that is, they transmit acoustic energy in only one direction regardless of the spatial spectrum of the incident acoustic excitation. In other words, we eliminate passive devices [9][10][11][12][13] that exhibit time-reversal symmetry.…”

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confidence: 99%

Non-reciprocal and highly nonlinear active acoustic metamaterials

2014

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Unidirectional devices that pass acoustic energy in only one direction have numerous applications and, consequently, have recently received significant attention. However, for most practical applications that require unidirectionality at audio and low frequencies, subwavelength implementations capable of the necessary time-reversal symmetry breaking remain elusive. Here we describe a design approach based on metamaterial techniques that provides highly subwavelength and strongly non-reciprocal devices. We demonstrate this approach by designing and experimentally characterizing a non-reciprocal active acoustic metamaterial unit cell composed of a single piezoelectric membrane augmented by a nonlinear electronic circuit, and sandwiched between Helmholtz cavities tuned to different frequencies. The design is thinner than a tenth of a wavelength, yet it has an isolation factor of 410 dB. The design method generates relatively broadband unidirectional devices and is a good candidate for numerous acoustic applications.

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“…Recently, the asymmetric or unidirectional acoustic transmission has aroused wide interest [1][2][3][4][5][6][7][8] because of its prospective applications, such as in designing acoustic sensors and rectifying devices. The asymmetric transmission can be realized by breaking either the time-reversal symmetry or spatial-inversion symmetry along the opposite incident directions.…”

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confidence: 99%

Highly asymmetric interaction forces induced by acoustic waves in coupled plate structures

Fan

Qiu

Zhang

et al. 2015

Journal of Applied Physics

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Mutual forces can be induced between coupled structures when illuminated by external acoustic waves. In this Letter, we propose a concept of asymmetric interaction between two coupled plate-like structures, which is generated by oppositely incident plane waves. Besides the striking contrast in magnitude, the mutual force induced by one of the incidences can be tuned extremely strong due to the resonant excitation of the flexural plate modes. The highly asymmetric interaction with enhanced strength in single side should be potentially useful, such as in designing ultrasound instruments and sensors.

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High-efficient acoustic wave rectifier

Cited by 38 publications

References 3 publications

Rectification of elastic waves in a thin plate

Rectification of elastic waves in a thin plate

Non-reciprocal and highly nonlinear active acoustic metamaterials

Highly asymmetric interaction forces induced by acoustic waves in coupled plate structures

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