145 citations · 381 across the 11 of their papers we have counts for
7 papers · 1 filter
Gradient index phononic crystals and metamaterials
Yabin Jin, Bahram Djafari-Rouhani, Daniel Torrent
Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation. Their refrac…
Valley Hall phases in Kagome lattices
Natalia Lera, Daniel Torrent, Pablo San-Jose +2
We report the finding of the analogous valley Hall effect in phononic systems arising from mirror symmetry breaking, in addition to spatial inversion symmetry breaking. We study to…
Ultrathin acoustic parity-time symmetric metasurface cloak
Hao-Xiang Li, Maria Rosendo-Lopez, Yi-Fan Zhu +5
Invisibility or unhearability cloaks have been made possible by using metamaterials making light or sound flow around obstacle without the trace of reflections or shadows. Metamate…
Engineered diffraction gratings for acoustic cloaking
Yabin Jin, Xinsheng Fang, Yong Li +1
We show that engineered diffraction gratings can considerably simplify the design and performance of acoustic devices. Acoustic reflecting gratings based on rectangular cavities dr…
The Inverse Grating Problem: Efficient Design of Anomalous Flexural Wave Reflectors and Refractors
Pawel Packo, Andrew N. Norris, Daniel Torrent
We present an extensive formulation of the inverse grating problem for exural waves, in which the energy of each diffracted mode is selected and the grating configuration is then o…
Acoustic Anomalous Reflectors Based on Diffraction Grating Engineering
Daniel Torrent
We present an efficient method for the design of anomalous reflectors for acoustic waves. The approach is based on the fact that the anomalous reflector is actually a diffraction g…