arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.5576cond-mat.mes-hallphysics.optics
收藏

非互易几何波二极管的非线性材料工程非对称设计

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

Nianbei Li, Jie Ren

摘要:

单向非互易输运是科学和技术中许多基本问题和应用的核心。在这里,我们研究了波二极管器件的新设计,通过工程非对称形状的非线性材料,实现非互易波传播的功能。我们首先展示了分析结果,揭示了非线性和不对称性是必要的,以诱导这种非互易(不对称)波传播。进一步对一个具有典型非对称形状的几何波二极管模型进行了详细的数值模拟,得到了良好的非互易波二极管效应。最后,我们讨论了几何波二极管的可扩展性。这一结果为简单地通过非线性材料的形状工程有效地设计波二极管开辟了一条灵活的途径,这可能在控制能量、质量和信息传输方面具有广泛的意义。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑