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Universalities of Asymmetric Transport in Nonlinear Wave Chaotic Systems
Cheng-Zhen Wang, Rodion Kononchuk, Ulrich Kuhl +1
The intrinsic dynamical complexity of classically chaotic systems enforces a universal description of the transport properties of their wave-mechanical analogues. These universal r…
Adiabatic monoparametric autonomous motors enabled by self-induced nonconservative forces
Arkady Kurnosov, Lucas J. Fernández-Alcázar, Raúl Bustos-Marún +1
Archetypal motors produce work when two slowly varying degrees of freedom (DOF) move around a closed loop of finite area in the parameter space. Here, instead, we propose a simple…
Emergence of Exceptional Points in Periodic Metastructures with Hidden PT-symmetric Defects
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 a judiciously engineered imaginary impedance el…
Enhanced Signal-to-Noise Performance of EP-based Electromechanical Accelerometers
Rodion Kononchuk, Jizhe Cai, Fred Ellis +2
Exceptional points (EP) are non-Hermitian spectral degeneracies where both eigenvalues and their corresponding eigenvectors coalesce. Recently, EPs have attracted a lot of attentio…
Reconfigurable Enhancement of Actuation Forces by Engineered Losses in non-Hermitian Metamaterials
Abhishek Gupta, Arkady Kurnosov, Tsampikos Kottos +1
While boosting signals with amplification mechanisms is a well established approach, attenuation mechanisms are typically considered an anathema because they degrade the efficiency…