Work

Space-time phononic crystals with anomalous topological edge states

Year: 2019

Type: article

Abstract: The authors show unconventional multiple edge-state excitations located outside the Bragg band-gap using a space-time modulated topological phononic crystal . The time-modulation induces frequency conversion that can be leveraged to access topological edge states at a deep subwavelength scale where the wavelength is several times the entire phononic crystal size. This concept is a primer in designing topologically robust, miniaturized devices for a wide range of applications.

Source: Physical Review Research

DOI: 10.1103/physrevresearch.1.033069

Authors: Mourad Oudich, Yuanchen Deng, Molei Tao, Yun Jing

Institutions: Centre National de la Recherche Scientifique, North Carolina State University, Institut Jean Lamour, Université de Lorraine, Georgia Institute of Technology

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: National Science Foundation, Division of Electrical, Communications and Cyber Systems