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Zahra Khorshidi,Ali Bahari 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2016 NANO Vol.11 No.8
In the present work, we synthesized a composite medium consisting of Ag nanorods embedded in Co0.05Ti0.95O2 matrix (Ag/CTO) using the sol-gel method. We applied a uniform AC electric field at the beginning of gelation and during drying for manipulating Ag nanorods in the matrix. The structure and morphology characterizations of Ag/CTO nanocomposites were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. The permittivity and permeability behaviors of samples were investigated. Results showed that for the sample dried in the existence of the electric field, simultaneous negative permittivity and permeability were realized. These results imply the realization of double negative properties in this sample. Therefore, this work suggests that Ag/Co0.05Ti0.95O2 nanocomposites can be introduced as a negative index metamaterials (NIMs).