Achieving transparency with plasmonic and metamaterial coatings -: art. no. 016623
Achieving transparency with plasmonic and metamaterial coatings -: art. no. 016623
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DOI：
10.1103/physreve.72.016623
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发表时间：
2005-07-01
影响因子：
2.4
通讯作者：
Engheta, N
中科院分区：
文献类型：
--
作者：
Alù, A;Engheta, N
讨论了使用等离子体和超材料覆盖物来大幅减少球形和圆柱形物体的总散射截面的可能性。虽然直观地预期增加物体的物理尺寸可能会导致其整体散射截面的增加，但在这里我们看到这些无损超材料覆盖物在其等离子体共振附近的适当设计如何引起散射截面的急剧下降，使这些物体对外界物体几乎“不可见”或“透明”--这种现象明显适用于低-可观察性和非侵入性探头设计。物理的见解，这种现象和一些数值结果。
The possibility of using plasmonic and metamaterial covers to drastically reduce the total scattering cross section of spherical and cylindrical objects is discussed. While it is intuitively expected that increasing the physical size of an object may lead to an increase in its overall scattering cross section, here we see how a proper design of these lossless metamaterial covers near their plasma resonance may induce a dramatic drop in the scattering cross section, making these objects nearly "invisible" or "transparent" to an outside observer-a phenomenon with obvious applications for low-observability and noninvasive probe design. Physical insights into this phenomenon and some numerical results are provided.