Realization of Subwavelength Asymmetric Acoustic Transmission Based on Low-Frequency Forbidden Transmission

• DOI: 10.1103/physrevapplied.5.034006
• Publication Date: 2016-03-10T17:08:26Z
• Authors: Sai Zhang; Yu Zhang; Yijun Guo; Yanhong Leng; Wen Feng; Wenwu Cao
• Keywords: Realization (probability); Underwater acoustic communication; SIGNAL (programming language)

One-way propagation of acoustic waves has been achieved using superlattices or nonlinear diodes, but these structures are much larger than the wavelength. This makes them impractical for applications such as low-frequency underwater signal transmission. The authors show that unidirectional wave is possible with a device smaller Their design offers high rectification and broadband performance, does not require an external power source.