TY - GEN
T1 - Wave amplification in double negative elastic metamaterials
AU - Su, Y. C.
AU - Sun, C. T.
PY - 2015
Y1 - 2015
N2 - For two homogeneous and isotropic media, the angles of the transmitted and reected waves follow the Snell's law, which relate them to the angle of incidence and material properties of each medium. When the angle of incidence is larger than the critical angle (the angle of incidence that makes the transmission angle equals π=2), the transmitted wave will decay exponentially in the direction away from the interface. However, we found that by changing one medium into a double negative metamaterial, the transmitted wave will grow exponentially instead. This research can be used for amplifying evanescent transmitted waves by putting thin metamaterial layer between bilayer elastic media.
AB - For two homogeneous and isotropic media, the angles of the transmitted and reected waves follow the Snell's law, which relate them to the angle of incidence and material properties of each medium. When the angle of incidence is larger than the critical angle (the angle of incidence that makes the transmission angle equals π=2), the transmitted wave will decay exponentially in the direction away from the interface. However, we found that by changing one medium into a double negative metamaterial, the transmitted wave will grow exponentially instead. This research can be used for amplifying evanescent transmitted waves by putting thin metamaterial layer between bilayer elastic media.
UR - http://www.scopus.com/inward/record.url?scp=85088195105&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85088195105&partnerID=8YFLogxK
U2 - 10.2514/6.2015-1121
DO - 10.2514/6.2015-1121
M3 - Conference contribution
AN - SCOPUS:85088195105
T3 - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
BT - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015
Y2 - 5 January 2015 through 9 January 2015
ER -