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physics.app-ph2026
Comparing Spatially Periodic Feedback and Space-Time Modulation for Unidirectional Wave Propagation in a 1D Mass-Spring-Damper System
João H. S. Brandão, Danilo Braghini, José R. F. Arruda
Unidirectional wave propagation has emerged as a key concept in the dynamics of non-reciprocal mechanical and acoustic metamaterials. This work investigates two fundamentally disti…
physics.app-ph2022
Non-Hermitian acoustic waveguides with periodic electroacoustic feedback
Danilo Braghini, Vinicius D. de Lima, Danilo Beli +2
In this work, we investigate non-Hermitian acoustic waveguides designed with periodically applied feedback efforts using electrodynamic actuators. One-dimensional spectral (infinit…