Negative refraction
Negative refraction
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DOI：
10.1080/00107510902734771
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发表时间：
2009-01
影响因子：
2
通讯作者：
J. Pendry
中科院分区：
文献类型：
--
作者：
J. Pendry
光线弯曲材料年代和错误的方式,你是-在1968年指出,但缺乏天然材料这个属性导致忽视这个话题直到1999年当它在如何使人工材料,超材料,与消极,u。主体的快速推进以来,无论是在理论和实验中,反映在出版物的指数增长现在每年在200年的水平,仍在增长。这种兴趣可以用突然出现的性质不同的一类电磁材料以及这些材料似乎具有的相当惊人的特性来解释；随着他们行为的每一个新方面被揭示出来，所有这些都引发了争论。实验对于解决争议是至关重要的，主要是在光谱的微波区域，尽管在光学区域也有潜力，目前有几个小组正在进行探索。几年前，Veselago b[1]对介电常数s和磁导率a同时为负的材料进行了理论研究。他的结论是，尽管这些材料应该支持电磁波有一个明确的波矢量，
Light bends the wrong way in materials where both s and, u are negative as was pointed out in 1968, but the absence of natural materials with this property led to neglect of the subject until 1999 when it was shown how to make artificial materials, metamaterials, with negative, u. The rapid advance of the subject since that date, both in theory and experiment, is reflected in the exponential growth of publications now at the 200 per year level and still growing. This interest is explained by the sudden availability of a qualitatively diflerent class of electromagnetic materials combined with the quite startling properties which these materials appear to have; all of which provokes debate as each new facet of their behaviour is revealed. Experiment has been vital to resolution of controversy and has chiefly been in the microwave region of the spectrum though there is potential in the optical region currently being explored by several groups.1. Bending light the wrong way Some years ago Veselago [1] made a theoretical study of materials in which the sign of the electrical permittivity, s, and magnetic permeability,, a, were simultaneously negative. He concluded that, although these materials should support electromagnetic waves having a well defined wave vector,