Optimal Design of an Acoustic Lens with Anisotropic Metamaterial
Van Nam Hoang, Minh Ngoc Nguyen · Vietnam Maritime University · 2026
By optimizing the sizes of random rigid scatterers in an anisotropic acoustic metamaterial, the lens achieves subwavelength focusing beyond the diffraction limit.
Plain English summary
Why this matters
Key findings
- Optimized acoustic lens uses anisotropic metamaterial with random rigid scatters in a matrix.
- Scatterer sizes are treated as optimization design variables.
- Numerical results show subwavelength focusing of plane waves to a focal region.
- Subwavelength performance surpasses the diffraction limit via evanescent-wave enhancement through multiple scattering.
- The optimized lens is suggested to enable a wide operating frequency range.
Limitations
The abstract provides only numerical examples and does not state experimental validation, fabrication details, robustness to manufacturing tolerances, or the exact operating frequency range.
Publication
- Publisher
- Vietnam Maritime University
- Publication date
- March 30, 2026
- Research type
- Paper
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