Work

Elastic metamaterial with simultaneously negative refraction for longitudinal and transverse waves

Year: 2017

Type: article

Abstract: We present a study of elastic metamaterial that possesses multiple local resonances. We demonstrated that the elastic metamaterial can have simultaneously three negative effective parameters, i.e., negative effective mass, effective bulk modulus and effective shear modulus at a certain frequency range. Through the analysis of the resonant field, it has been elucidated that the three negative parameters are induced by dipolar, monopolar and quadrupolar resonance respectively. The dipolar and monopolar resonances result into the negative band for longitudinal waves, while the dipolar and quadrupolar resonances cause the negative band for transverse waves. The two bands have an overlapping frequency regime. A simultaneously negative refraction for both longitudinal waves and transverse waves has been demonstrated in the system.

Source: AIP Advances

DOI: 10.1063/1.5001153

Authors: Ji-En Wu, Xiaoyun Wang, Bing Tang, Zhaojian He, Ke Deng, Heping Zhao

Institution: Jishou University

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,350

Funders: National Natural Science Foundation of China, Natural Science Foundation of Hunan Province