Nonlocal elastic metasurfaces: Enabling broadband wave control via intentional nonlocality.

ABSTRACT: While elastic metasurfaces offer a remarkable and very effective approach to the subwavelength control of stress waves, their use in practical applications is severely hindered by intrinsically narrow band performance. In applications to electromagnetic and photonic metamaterials, some success in extending the operating dynamic range was obtained by using nonlocality. However, while electronic properties in natural materials can show significant nonlocal effects, even at the macroscales, in mechanics, nonlocality is a higher-order effect that becomes appreciable only at the microscales. This study introduces the concept of intentional nonlocality as a fundamental mechanism to design passive elastic metasurfaces capable of an exceptionally broadband operating range. The nonlocal behavior is

SUBMITTER: Zhu H 

PROVIDER: S-EPMC7585032 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature