Experimental verification of zeroth-order resonance phenomenon in an acoustic composite right/left-handed metamaterial resonator

초록

This study experimentally verified our previously proposed theory that describes the zeroth-order resonance phenomenon in a resonator made of acoustic composite right/left-handed (CRLH) metamaterials [J. Acoust. Soc. Am. 142, 2298 ( 2017)]. It was experimentally demonstrated that the zeroth-order resonance mode with a flat shape exists in the acoustic CRLH metamaterial resonator. It was also verified that the resonance frequency of zeroth-order resonance changes depending on the boundary condition at both ends of the resonator and essentially does not depend on the number of resonator units, consistent with the theory. (C) 2019 The Japan Society of Applied Physics