Giant concentration by extraordinary acoustic transmission in metamaterials

Sam H. Lee; Jong Jin Park; Myoung Ki Jung; K. J.B. Lee; Oliver B. Wright

Giant concentration by extraordinary acoustic transmission in metamaterials

Sam H. Lee, Jong Jin Park, Myoung Ki Jung, K. J.B. Lee, Oliver B. Wright

Department of Physics

Research output: Contribution to conference › Paper › peer-review

Abstract

We realized zero-mass metamaterials by making the inertance of membrane-covered air holes close to zero. We thereby experimentally and theoretically demonstrate a new mechanism for acoustic extraordinary transmission. For a filling fraction of 1 % we obtained a 57% transmission intensity (76% in amplitude); this implies that on resonance the particle velocity inside a hole is 76 times greater than that of incident wave, corresponding to an intensification of the acoustic energy density by a factor of 5700. Such a high concentration of acoustic energy into a small hole of radius r = λ/56 enables sensitive detection of acoustic signals with subwave-length resolution. Potential applications include scanning near-field acoustic microscopy.

Original language	English
Pages	2654-2661
Number of pages	8
State	Published - 2013
Event	20th International Congress on Sound and Vibration 2013, ICSV 2013 - Bangkok, Thailand Duration: 7 Jul 2013 → 11 Jul 2013

Conference

Conference	20th International Congress on Sound and Vibration 2013, ICSV 2013
Country/Territory	Thailand
City	Bangkok
Period	7/07/13 → 11/07/13

Cite this

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title = "Giant concentration by extraordinary acoustic transmission in metamaterials",

abstract = "We realized zero-mass metamaterials by making the inertance of membrane-covered air holes close to zero. We thereby experimentally and theoretically demonstrate a new mechanism for acoustic extraordinary transmission. For a filling fraction of 1 % we obtained a 57% transmission intensity (76% in amplitude); this implies that on resonance the particle velocity inside a hole is 76 times greater than that of incident wave, corresponding to an intensification of the acoustic energy density by a factor of 5700. Such a high concentration of acoustic energy into a small hole of radius r = λ/56 enables sensitive detection of acoustic signals with subwave-length resolution. Potential applications include scanning near-field acoustic microscopy.",

author = "Lee, {Sam H.} and Park, {Jong Jin} and Jung, {Myoung Ki} and Lee, {K. J.B.} and Wright, {Oliver B.}",

year = "2013",

language = "English",

pages = "2654--2661",

note = "20th International Congress on Sound and Vibration 2013, ICSV 2013 ; Conference date: 07-07-2013 Through 11-07-2013",

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TY - CONF

T1 - Giant concentration by extraordinary acoustic transmission in metamaterials

AU - Lee, Sam H.

AU - Park, Jong Jin

AU - Jung, Myoung Ki

AU - Lee, K. J.B.

AU - Wright, Oliver B.

PY - 2013

Y1 - 2013

N2 - We realized zero-mass metamaterials by making the inertance of membrane-covered air holes close to zero. We thereby experimentally and theoretically demonstrate a new mechanism for acoustic extraordinary transmission. For a filling fraction of 1 % we obtained a 57% transmission intensity (76% in amplitude); this implies that on resonance the particle velocity inside a hole is 76 times greater than that of incident wave, corresponding to an intensification of the acoustic energy density by a factor of 5700. Such a high concentration of acoustic energy into a small hole of radius r = λ/56 enables sensitive detection of acoustic signals with subwave-length resolution. Potential applications include scanning near-field acoustic microscopy.

AB - We realized zero-mass metamaterials by making the inertance of membrane-covered air holes close to zero. We thereby experimentally and theoretically demonstrate a new mechanism for acoustic extraordinary transmission. For a filling fraction of 1 % we obtained a 57% transmission intensity (76% in amplitude); this implies that on resonance the particle velocity inside a hole is 76 times greater than that of incident wave, corresponding to an intensification of the acoustic energy density by a factor of 5700. Such a high concentration of acoustic energy into a small hole of radius r = λ/56 enables sensitive detection of acoustic signals with subwave-length resolution. Potential applications include scanning near-field acoustic microscopy.

UR - http://www.scopus.com/inward/record.url?scp=84897061184&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84897061184

SP - 2654

EP - 2661

T2 - 20th International Congress on Sound and Vibration 2013, ICSV 2013

Y2 - 7 July 2013 through 11 July 2013

ER -

Giant concentration by extraordinary acoustic transmission in metamaterials

Abstract

Conference

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