Optical Negative Refraction in Ferrofluids with Magnetocontrollability
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AbstractWe numerically demonstrate optical negative refraction in ferrofluids containing isotropic Fe(3)O(4) nanoparticles, each having an isotropic Ag shell, in the presence of an external dc magnetic field H. The all-angle broadband optical negative refraction with magnetocontrollability arises from H-induced chains or columns. They result in hyperbolic equifrequency contour for transverse magnetic waves propagating in the system. The finite element simulations verify the analyses using the effective medium approximation. Experimental demonstration and potential applications are suggested and discussed.
All Author(s) ListGao Y, Huang JP, Liu YM, Gao L, Yu KW, Zhang X
Journal namePhysical Review Letters
Volume Number104
Issue Number3
PublisherAmerican Physical Society
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesPhysics; Physics, Multidisciplinary; PHYSICS, MULTIDISCIPLINARY

Last updated on 2021-25-02 at 00:59