1. Multi-band and broadband acoustic metamaterial with resonant structures
- Author
-
Xiaopeng Zhao and Chang-Lin Ding
- Subjects
Materials science ,Acoustics and Ultrasonics ,business.industry ,Modulus ,Metamaterial ,Frequency dependence ,Hollow shape ,Condensed Matter Physics ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Multi band ,Optics ,Transmission (telecommunications) ,Broadband ,Optoelectronics ,SPHERES ,business - Abstract
We design an acoustic metamaterial (AM) with multi-band of negative modulus composed of different sized split hollow spheres (SHSs). From acoustic transmitted experiment, the AM exhibits simultaneously negative modulus at frequencies 914, 1298 and 1514 Hz. Based on the multi-band designed concept, broadband AM is fabricated by arraying gradually sized SHS. The transmission results indicate that this medium can achieve negative modulus at the frequency range from 900 to 1500 Hz. This kind of broadband AM is very convenient to couple with other structures to gain the double-negative AM.
- Published
- 2011