74 citations · 183 across the 6 of their papers we have counts for
6 papers
Topologically invisible defects in chiral mirror lattices
Antonin Coutant, Li-Yang Zheng, Vassos Achilleos +3
One of the hallmark of topological insulators is having conductivity properties that are unaffected by the possible presence of defects. In this work, we go beyond backscattering i…
Acoustic Su-Schrieffer-Heeger lattice: Direct mapping of acoustic waveguides to Su-Schrieffer-Heeger model
Antonin Coutant, Audrey Sivadon, Liyang Zheng +4
Topological physics strongly relies on prototypical lattice model with particular symmetries. We report here on a theoretical and experimental work on acoustic waveguides that is d…
Observation of edge waves in a two-dimensional Su-Schrieffer-Heeger acoustic network
Li-Yang Zheng, Vassos Achilleos, Olivier Richoux +2
In this work, we experimentally report the acoustic realization the two-dimensional (2D) Su-Schrieffer-Heeger (SSH) model in a simple network of air channels. We analytically study…
Granular Graphene: direct observation of zigzag and armchair edge waves
Li-Yang Zheng, Florian Allein, Vincent Tournat +2
We propose a mechanical granular graphene obtained by replacing the carbon atoms with macroscopic spherical stainless steel beads in contact. The experimental measured dispersion r…
Surface waves in granular phononic crystals
Helene Pichard, Aroune Duclos, Jean-Philippe Groby +3
The existence of surface elastic waves at a mechanically free surface of granular phononic crystals is studied. The granular phononic crystals are made of spherical particles distr…
Accidental degeneracy of double Dirac cones in a phononic crystal
Ze-Guo Chen, Xu Ni, Ying Wu +5
Artificial honeycomb lattices with Dirac cone dispersion provide a macroscopic platform to study the massless Dirac quasiparticles and their novel geometric phases. In this paper,…