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标题：Fresnel drag in space–time-modulated metamaterials
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作者：Paloma A. Huidobro ; Emanuele Galiffi ; Sébastien Guenneau 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2019
卷号：116
期号：50
页码：24943-24948
DOI：10.1073/pnas.1915027116
出版社：The National Academy of Sciences of the United States of America
摘要：A moving medium drags light along with it as measured by Fizeau and explained by Einstein’s theory of special relativity. Here we show that the same effect can be obtained in a situation where there is no physical motion of the medium. Modulations of both the permittivity and permeability, phased in space and time in the form of traveling waves, are the basis of our model. Space–time metamaterials are represented by effective bianisotropic parameters, which can in turn be mapped to a moving homogeneous medium. Hence these metamaterials mimic a relativistic effect without the need for any actual material motion. We discuss how both the permittivity and permeability need to be modulated to achieve these effects, and we present an equivalent transmission line model..
关键词：metamaterials ; space–time modulations ; Fresnel drag ; nonreciprocity