2 papers
physics.app-ph2025
Longitudinal-flexural wave mode conversion via periodically undulated waveguides with constant and graded profiles
Vinicius F. Dal Poggetto, Fabio Nistri, Nicola M. Pugno +3
Wave mode conversion allows to transform energy from one propagating wave type to another at a boundary where a change in material properties or geometry occurs. Converting longitu…
physics.app-ph2024
The thin lens equation in elasticity: imaging with gradient index phononic crystals
P. H. Beoletto, F. Nistri, A. S. Gliozzi +2
Many works in elasticity have exploited the concept of gradient index (GRIN) lenses, borrowed from optics, for wave focusing and control. These effects are particularly attractive…