Tunable elastic Parity-Time symmetric structure based on the shunted piezoelectric materials
arXiv:1801.04114 · doi:10.1063/1.5009129
Abstract
We theoretically and numerically report on tunable elastic Parity-Time (PT) symmetric structure based on shunted piezoelectric units. We show that the elastic loss and gain can be archived in piezoelectric materials when they are shunted by external circuits containing positive and negative resistances. We present and discuss, as an example, the strongly dependent relationship between the exceptional points of a three-layered system and the impedance of their external shunted circuit. The achieved results evidence the PT symmetric structures based on this proposed concept can actively be tuned without any change of their geometric configurations.
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Cited by in corpus (8)
- Dynamics and topology of non-Hermitian elastic lattices with non-local feedback control interactions
- Exceptional points and enhanced sensitivity in PT-symmetric continuous elastic media
- Anomalous energy transport in laminates with exceptional points
- Non-Hermitian elastic waveguides with piezoelectric feedback actuation: non-reciprocal bands and skin modes
- CPA-Lasing in Thin-Elastic Plates via Exceptional Points
- Linking scalar elastodynamics and non-Hermitian quantum mechanics
- Emergence of Exceptional Points in Periodic Metastructures with Hidden PT-symmetric Defects
- Non-Local Elastic Lattices with -Symmetry and Time Modulation: From Perfect Trapping to the Wave Boomerang Effect