Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, United Kingdom.
ACS Nano. 2011 Nov 22;5(11):9138-43. doi: 10.1021/nn203363x. Epub 2011 Oct 28.
Highly dense periodic arrays of multiwalled carbon nanotubes behave like low-density plasma of very heavy charged particles, acting as metamaterials. These arrays with nanoscale lattice constants can be designed to display extended plasmonic band gaps within the optical regime, encompassing the crucial optical windows (850 and 1550 nm) simultaneously. We demonstrate an interesting metamaterial waveguide effect displayed by these nanotube arrays containing line defects. The nanotube arrays with lattice constants of 400 nm and radius of 50 nm were studied. Reflection experiments conducted on the nanoscale structures were in agreement with numerical calculations.
高密度周期性多壁碳纳米管阵列的行为类似于非常重带电粒子的低密度等离子体，起到了超材料的作用。这些具有纳米级晶格常数的阵列可以设计为在光学范围内显示扩展的等离子体带隙，同时包含关键的光学窗口（850nm 和 1550nm）。我们展示了这些含有线缺陷的纳米管阵列所表现出的有趣的超材料波导效应。研究了晶格常数为 400nm 且半径为 50nm 的纳米管阵列。对纳米结构进行的反射实验与数值计算结果一致。
