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math.OC2024
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…
physics.app-ph2024
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.…
physics.app-ph2024
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,…