Non-Reciprocal Geometric Wave Diode by Engineering Asymmetric Shapes of Nonlinear Materials

Abstract

Unidirectional nonreciprocal transport is at the heart of many fundamental problems and applications in both science and technology. Here we study the novel design of wave diode devices by engineering asymmetric shapes of nonlinear materials to realize the function of non-reciprocal wave propagations. We first show analytical results revealing that both nonlinearity and asymmetry are necessary to induce such non-reciprocal (asymmetric) wave propagations. Detailed numerical simulations are further performed for a more realistic geometric wave diode model with typical asymmetric shape, where good non-reciprocal wave diode effect is demonstrated. Finally, we discuss the scalability of geometric wave diodes. The results open a flexible way for designing wave diodes efficiently simply through shape engineering of nonlinear materials, which may find broad implications in controlling energy, mass and information transports.

4 figures

References in corpus (5)

• Artificial Brownian motors: Controlling transport on the nanoscale
• Thermal Conductivity and Thermal Rectification in Graphene Nanoribbons: a Molecular Dynamics Study
• Carbon Nanocone: A Promising Thermal Rectifier
• Nonlinear waves in disordered chains: probing the limits of chaos and spreading
• Broadband on-chip optical non-reciprocity using phase modulators

Cited by in corpus (7)

• All-Passive Nonreciprocal Metasurface
• Optical isolation with nonlinear topological photonics
• Non-reciprocal transmission in photonic lattices based on unidirectional coherent perfect absorption
• Thermal rectification and heat amplification in a nonequilibrium V-type three-level system
• Half-Metal Spin-Gapless Semiconductor Junctions as a Route to the Ideal Diode
• Asymmetric Nonlinear System is Not sufficient for Non-Reciprocal Quantum Wave Diode
• Multichannel asymmetric transmission through a dimer defect with saturable inter-site nonlinearity