arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1303.7003cond-mat.mes-hall
收藏

Kerr型介电基质金属纳米线阵列的有效介质响应

Effective Medium Response of Metallic Nanowire Arrays with a Kerr-type Dielectric Host

Mario Silveirinha

摘要:

我们推导了一个有效介质模型来描述金属纳米线阵列的宏观电磁响应嵌入在一个主介质与克尔型非线性介电常数函数。结果表明,宏观电磁场耦合到纳米线中的传导电流和一个额外的准静态电位通过一个系统的非线性方程。我们证明,弱的非线性导致电磁响应更接近于一个不确定的介质,并增加了双曲性的等值线。当纳米线嵌入自聚焦克尔介质中时,在高场强下空气纳米线材料界面处的电磁波的负折射增强。

英文摘要:

We derive an effective medium model to characterize the macroscopic electromagnetic response of metallic nanowire arrays embedded in a host dielectric with a Kerr-type nonlinear permittivity function. It is shown that the macroscopic electromagnetic fields are coupled to the conduction current in the nanowires and to an additional quasi-static potential through a system of nonlinear equations. We prove that a weak nonlinearity leads to an electromagnetic response closer to that of an indefinite medium, and to isofrequency contours with increased hyperbolicity. For high-field intensities the negative refraction of electromagnetic waves at an air nanowire material interface is enhanced when the nanowires are embedded in a self-focusing Kerr medium.

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。

↑