23 citations · 49 across the 8 of their papers we have counts for
9 papers
Strongly non-linear continuous model for wave propagation in 2D granular media: derivation and hyperbolicity analysis
Sebastiano Cominelli, Régis Cottereau, Sergey Gavrilyuk +2
In this work, we develop a nonlinear continuum model for wave propagation in two-dimensional granular materials, building on key ideas from Nesterenko's work. Starting from the Her…
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…
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…
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…
Optimal Design of Broadband, Low-Directivity Graded Index Acoustic Lenses for Underwater Applications
Sebastiano Cominelli, Francesco Braghin
Manipulating underwater pressure waves is crucial for marine exploration, as electromagnetic signals are strongly absorbed in water. However, the multi-path phenomenon complicates…
High Bulk Modulus Pentamodes: the Three-Dimensional Metal Water
Giacomo Brambilla, Sebastiano Cominelli, Marco Verbicaro +2
Despite significant advances in the field of phononic crystals, the development of acoustic metafluids that replicate the behaviour of liquids in three dimensions remains elusive.…
Isospectral open cavities and gratings
Sebastiano Cominelli, Benjamin Vial, Sébastien Guenneau +1
Open cavities are often an essential component in the design of ultra-thin subwavelength metasurfaces and a typical requirement is that cavities have precise, often low frequency,…
Optimal Strategies to Steer and Control Water Waves
Sebastiano Cominelli, Carlo Sinigaglia, Davide Enrico Quadrelli +1
In this paper, we propose a novel approach for controlling surface water waves and their interaction with floating bodies. We consider a floating target rigid body surrounded by a…
Design of arbitrarily shaped acoustic cloaks through PDE-constrained optimization satisfying sonic-metamaterial design requirements
Sebastiano Cominelli, Davide Enrico Quadrelli, Carlo Sinigaglia +1
We develop an optimization framework for the design of acoustic cloaks, with the aim of overcoming the limitations of usual transformation-based cloaks in terms of microstructure c…