We experimentally achieve wave-mode conversion and rainbow trap** in an elastic
waveguide loaded with an array of resonators. Rainbow trap** is a phenomenon that …

In this work, we investigate the dynamic behavior and the topological properties of
quasiperiodic elastic metasurfaces, namely arrays of mechanical oscillators arranged over …

Topological notions in physics often emerge from adiabatic evolution of states. It not only
leads to fundamental insight of topological protection but also provides an important …

The dynamics of topological boundary modes in both periodic and quasi-periodic
electromechanical metastructures is investigated, with a focus on their applications to …

This paper reports the evidence of the tunable sub-wavelength topological interface state in
local resonance piezoelectric metamaterials. An elastic beam serves as the host medium …

Twisted bilayered systems such as bilayered graphene exhibit remarkable properties such
as superconductivity at magic angles and topological insulating phases. For generic twist …