122 citations · 1.1k across the 47 of their papers we have counts for
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Strain topological metamaterials
Florian Allein, Adamantios Anastasiadis, Rajesh Chaunsali +4
Topological physics has revolutionised materials science, introducing topological insulators and superconductors with applications from smart materials to quantum computing. Bulk-b…
Wave-packet spreading in the disordered and nonlinear Su-Schrieffer-Heeger chain
Bertin Many Manda, Vassos Achilleos, Olivier Richoux +2
We numerically investigate the characteristics of the long-time dynamics of a single-site wave-packet excitation in a disordered and nonlinear Su-Schrieffer-Heeger model. In the li…
Modulation instability in nonlinear flexible mechanical metamaterials
Antoine Demiquel, Vassos Achilleos, Georgios Theocharis +1
In this paper, we study modulation instabilities (MI) in a one-dimensional chain configuration of a flexible mechanical metamaterial (flexMM). Using the lumped element approach, fl…
Acoustic solitons in a periodic waveguide: theory and experiments
Ioannis Ioannou Sougleridis, Olivier Richoux, Vassos Achilleos +3
We study the propagation of high-amplitude sound waves, in the form of pulse-like solitary waves, in an air-filled acoustic waveguide of periodically varying cross section. Our num…
Topological edge-states of the PT-symmetric Su-Schrieffer-Heeger model: An effective two-state description
A. F. Tzortzakakis, A. Katsaris, N. E. Palaiodimopoulos +4
We consider the non-Hermitian, parity-time (PT) symmetric extensions of the one-dimensional Su-Schrieffer-Heeger (SSH) model in the topological non-trivial configuration. We study…
Duality of Topological Edge States in a Mechanical Kitaev Chain
Florian Allein, Rajesh Chaunsali, Adamantios Anastasiadis +4
We theoretically investigate and experimentally demonstrate the existence of topological edge states in a mechanical analog of the Kitaev chain with a non-zero chemical potential.…
Wave-packet spreading in disordered soft architected structures
Arnold Ngapasare, Georgios Theocharis, Olivier Richoux +2
We study the dynamical and chaotic behavior of a disordered one-dimensional elastic mechanical lattice which supports translational and rotational waves. The model used in this wor…