Cited by 2k
Institute of Acoustics
Publishes on Metamaterials and Metasurfaces Applications, Acoustic Wave Phenomena Research, Antenna Design and Analysis. 2 papers and 2.1k citations.
Add your photo, update your bio, and get notified when your ranking changes.
The authors demonstrate that a class of ultrasonic metamaterial, which is composed of subwavelength resonant units built up by parallel-coupled Helmholtz resonators with identical resonant frequency, possesses broad locally resonant forbidden bands. The bandwidths are strongly dependent on the number of resonators in each unit. The broadening of bands is ascribed to the change of effective acoustic impendence. The coupling effects on the wave vector and negative dynamic modulus are discussed. Numerical simulations by finite element method further confirm the theoretical results.