Numerical study of acoustic focusing using a bianisotropic acoustic lens
Abstract
Materials with sub-wavelength asymmetry and long-range order have recently been shown to demonstrate acoustical properties analogous to electromagnetic bianisotropy. One characteristic of bianisotropic acoustic media is the existence of direction-dependent acoustic impedance. Therefore, the magnitude and phase of the acoustic fields transmitted through bianisotropic acoustic media are dependent on the direction of bianisotropic polarization. These materials can therefore be used as acoustic metasurfaces to control acoustic fields. To demonstrate this behavior, a numerical model of bianisotropic acoustic waveguides is utilized to design a lens that focuses an incident plane wave by only manipulating the orientation of the bianisotropic coupling vector.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 01, 2020
- Source ID
- 10.1121/10.0002137
Entities
People
- A. J. Lawrence
- Benjamin M. Goldsberry
- Michael R Haberman
- Samuel P. Wallen
Organizations
- Office of Naval Research
- University of Texas at Austin