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Keywords: PT-symmetry
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Journal Articles

Emergence of Exceptional Points in Periodic Metastructures With Hidden Parity-Time Symmetric Defects

Yanghao Fang, Tsampikos Kottos, Ramathasan Thevamaran
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. December 2022, 89(12): 121003.
Paper No: JAM-22-1225
https://doi.org/10.1115/1.4055618
Published Online: October 6, 2022
...Yanghao Fang; Tsampikos Kottos; Ramathasan Thevamaran We study the elastodynamics of a periodic metastructure incorporating a defect pair that enforces a parity-time (PT) symmetry due to judiciously engineered imaginary impedance elements—one having energy amplification (gain) and the other having...
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Topics: Density, Eigenvalues, Elastodynamics, Expandable polystyrene, Finite element analysis, Parity (Physics), Spectra (Spectroscopy), Dynamics (Mechanics), Displacement, Computational mechanics
Includes: Supplementary data