292 citations · 1.6k across the 40 of their papers we have counts for
5 papers · 1 filter
Design and Experimental Observation of Valley-Hall Edge States in Diatomic-Graphene-like Elastic Waveguides
Hongfei Zhu, Ting-Wei Liu, Fabio Semperlotti
We report on the design and experimental validation of a two-dimensional phononic elastic waveguide exhibiting topological Valley-Hall edge states. The lattice structure of the wav…
Thermoacoustics of solids: a pathway to solid state engines and refrigerators
Haitian Hao, Carlo Scalo, Mihir Sen +1
Thermoacoustic oscillations have been one of the most exciting discoveries of the physics of fluids in the 19th century. Since its inception, scientists have formulated a comprehen…
Tunable Acoustic Valley-Hall Edge States in Reconfigurable Phononic Elastic Waveguides
Ting-Wei Liu, Fabio Semperlotti
This study investigates the occurrence of acoustic topological edge states in a 2D phononic elastic waveguide due to a phenomenon that is the acoustic analogue of the quantum valle…
Double-zero-index structural waveguides
Hongfei Zhu, Fabio Semperlotti
We report on the theoretical and experimental realization of a double-zero-index elastic waveguide and on the corresponding acoustic cloacking and supercoupling effects. The propos…
Two-Dimensional Structure-Embedded Acoustic Lenses based on Periodic Acoustic Black Holes
Hongfei Zhu, Fabio Semperlotti
Recent studies have introduced a new class of two-dimensional acoustic metamaterials whose dispersion and propagation properties results from the use of geometric inhomogeneities i…