TY - GEN
T1 - Tunable modulation of flexural waves by adaptive elastic metasurface
AU - Shi, Peng Tao
AU - Liu, Feng
AU - Xu, Yan Long
AU - Yang, Zhi Chun
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/4/16
Y1 - 2021/4/16
N2 - As a new kind of sub-wavelength elastic metamaterials, elastic metasurfaces have attracted much attention in recent years since their unique ability in elastic wave modulation. Lately, adaptive elastic metasurfaces make the elastic wave modulation more flexible by introducing new degrees of freedom into the metasurface designs. In this paper, the subunits of the adaptive metasurface are designed by combining the piezoelectric patches with shunted inductance circuit. Due to the tunability of the shunt circuit, the phase shifts for the subunits can be regulated by adjusting the electrical parameters without changing the configuration. According to the generalized Snell's law (GSL), the designed adaptive elastic metasurface can realize negative refraction with variable deflection angles and plane focusing with variable focal lengths. Besides, the designed metasurface has adjustable operating bandwidth compared with the traditional elastic metasurfaces. Our proposed adaptive elastic metasurface has potential applications in structural damage detection, vibration control and energy harvesting.
AB - As a new kind of sub-wavelength elastic metamaterials, elastic metasurfaces have attracted much attention in recent years since their unique ability in elastic wave modulation. Lately, adaptive elastic metasurfaces make the elastic wave modulation more flexible by introducing new degrees of freedom into the metasurface designs. In this paper, the subunits of the adaptive metasurface are designed by combining the piezoelectric patches with shunted inductance circuit. Due to the tunability of the shunt circuit, the phase shifts for the subunits can be regulated by adjusting the electrical parameters without changing the configuration. According to the generalized Snell's law (GSL), the designed adaptive elastic metasurface can realize negative refraction with variable deflection angles and plane focusing with variable focal lengths. Besides, the designed metasurface has adjustable operating bandwidth compared with the traditional elastic metasurfaces. Our proposed adaptive elastic metasurface has potential applications in structural damage detection, vibration control and energy harvesting.
KW - Adaptive elastic metasurfaces
KW - Flexural wave modulation
KW - Piezoelectric material
UR - http://www.scopus.com/inward/record.url?scp=85108030137&partnerID=8YFLogxK
U2 - 10.1109/SPAWDA51471.2021.9445449
DO - 10.1109/SPAWDA51471.2021.9445449
M3 - 会议稿件
AN - SCOPUS:85108030137
T3 - Proceedings of the 2020 15th Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2020
SP - 480
EP - 484
BT - Proceedings of the 2020 15th Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 15th Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2020
Y2 - 16 April 2021 through 19 April 2021
ER -