arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.2092physics.optics
收藏

最小化非磁性隐身衣的散射

Minimizing the scattering of a non-magnetic cloak

Jingjing Zhang, Yu Luo, Niels Asger Mortensen

摘要:

无磁隐身衣提供了一种可行的方法,利用只有电响应的材料实现在光频率下的隐身。在这封信中,我们提出了一个近似的理想隐身斗篷和定量研究其电磁特性的全波散射理论。结果表明,阻抗匹配隐身衣的前向散射随隐身衣厚度的减小而显著增大。尽管如此,仍然有可能有效地减少总散射截面与一个非常薄的斗篷,其阻抗不匹配的外边界处的周围材料。我们的分析还提供了减少在任意方向上的散射的灵活性。

英文摘要:

Nonmagnetic cloak offers a feasible way to achieve invisibility at optical frequencies using materials with only electric responses. In this letter, we suggest an approximation of the ideal nonmagnetic cloak and quantitatively study its electromagnetic characteristics using a full-wave scattering theory. It is demonstrated that the forward scattering of the impedance matched cloak increases dramatically as the thickness of the cloak decreases. Nevertheless, it is still possible to effectively reduce the total scattering cross section with a very thin cloak whose impedance is not matched to the surrounding material at the outer boundary. Our analysis also provides the flexibility of reducing the scattering in an arbitrary direction.

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。

↑