3 papers
physics.app-ph2026
Topology optimization of pentamode metamaterials for underwater acoustics
Sebastiano Cominelli, Matteo Pozzi, Francesco Braghin
This study presents an automated topology optimization framework for designing pentamode acoustic metamaterials. It provides precise control over the material effective acoustic pr…
physics.optics2025
Non-dispersive graded impedance acoustic lenses
Sebastiano Cominelli
Lenses are typically based on refractive index profiles derived from the geometric approximation of high-frequency waves, yet the critical issue of impedance mismatch is often negl…
physics.app-ph2025
Reduced-weight near-cloaks for underwater invisibility
Davide Enrico Quadrelli, Sebastiano Cominelli, Gabriele Cazzulani +1
Limiting the total weight of an acoustic cloak is of fundamental importance in underwater applications, where buoyancy of the cloaked object is desirable. Unfortunately, it is well…