TY - JOUR
T1 - Giant acoustic concentration by extraordinary transmission in zero-mass metamaterials
AU - Park, Jong Jin
AU - Lee, K. J.B.
AU - Wright, Oliver B.
AU - Jung, Myoung Ki
AU - Lee, Sam H.
PY - 2013/6/13
Y1 - 2013/6/13
N2 - We demonstrate 97%, 89%, and 76% transmission of sound amplitude in air through walls perforated with subwavelength holes of areal coverage fractions 0.10, 0.03, and 0.01, respectively, producing 94-, 950-, and 5700-fold intensity enhancements therein. This remarkable level of extraordinary acoustic transmission is achieved with thin tensioned circular membranes, making the mass of the air in the holes effectively vanish. Imaging the pressure field confirms incident-angle independent transmission, thus realizing a bona fide invisible wall. Applications include high-resolution acoustic sensing.
AB - We demonstrate 97%, 89%, and 76% transmission of sound amplitude in air through walls perforated with subwavelength holes of areal coverage fractions 0.10, 0.03, and 0.01, respectively, producing 94-, 950-, and 5700-fold intensity enhancements therein. This remarkable level of extraordinary acoustic transmission is achieved with thin tensioned circular membranes, making the mass of the air in the holes effectively vanish. Imaging the pressure field confirms incident-angle independent transmission, thus realizing a bona fide invisible wall. Applications include high-resolution acoustic sensing.
UR - http://www.scopus.com/inward/record.url?scp=84879078850&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.110.244302
DO - 10.1103/PhysRevLett.110.244302
M3 - Article
AN - SCOPUS:84879078850
SN - 0031-9007
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
IS - 24
M1 - 244302
ER -