10 papers
Sound Waveguiding by Spinning: An Avenue towards Unidirectional Acoustic Spinning Fibers
Mohamed Farhat, Pai-Yen Chen, Ying Wu
Waveguiding in general and acoustic waveguiding in particular are possible at the condition of having a transverse "discontinuity" or modulation of the refractive index. We propose…
Optical symmetric pushing, uni-/bi-directional null, and pulling-pushing flipped forces in one dimensional PT-symmetric photonics
Jeng Yi Lee, Pai-Yen Chen
We discuss the optical forces exerted on parity-time (PT) symmetric heterostructures under normal incidence of a single and two counter-propagating plane waves. The underlying stra…
Generalized Parametric Space, Parity Symmetry of Reflection, and Systematic Design Approach for Parity-Time Symmetric Photonic Systems
Jeng Yi Lee, Pai-Yen Chen
Based on the reciprocity theorem, we put forward a generalized parametric space for an arbitrary transfer matrix with parity time (PT) symmetry. Through this space, one can extract…
Tunable THz generation and enhanced nonlinear effects with active and passive graphene hyperbolic metamaterials
Boyuan Jin, Tianjing Guo, Liang Zhu +2
The active and nonlinear graphene properties are limited due to weak light matter interaction between the ultrathin graphene and the incident light. In this work, we present enhanc…
Superdirective Leaky Radiation from a PT-Synthetic Metachannel
Mehdi Hajizadegan, Pai-Yen Chen
Spectral singularities appearing in parity-time (PT)-symmetric non-Hermitian optical systems have aroused a growing interest due to their new, exhilarating applications, such as bi…
Scattering theory and cancellation of gravity-flexural waves of floating plates
Mohamed Farhat, Pai-Yen Chen, Hakan Bagci +2
We combine theories of scattering for linearized water waves and flexural waves in thin plates to characterize and achieve control of water wave scattering using floating plates. T…