Application of quantum graph theory to metamaterial design: Negative refraction of acoustic waveguide modes
Year: 2024
Type: article
Abstract: We leverage quantum graph theory to quickly and accurately characterize acoustic metamaterials comprising networks of interconnected pipes. Anisotropic bond lengths are incorporated in the model that correspond to space-coiled acoustic structures to exhibit dispersion spectra reminiscent of hyperbolic metamaterials. We construct two metasurfaces with embedded graph structure and, motivated by the graph theory, infer and fine-tune their dispersive properties to engineer nonresonant negative refraction of acoustic surface waves at their interface. Agreement between the graph model, full-wave simulations, and experiments bolsters quantum graph theory as a new paradigm for metamaterial design. Published by the American Physical Society 2024
Source: Physical Review Materials
Authors: T. M. Lawrie, T. A. Starkey, G. Tanner, D. B. Moore, P. Savage, G. J. Chaplain
Institutions: University of Nottingham, University of Exeter
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4403762548