Influence of Filling Medium of Holes on the Negative-Index Response of Sandwiched Metamaterials  

作　　者：王旭东 叶永红 马骥 蒋美萍 

机构地区：[1]School of Physics and Mathematics, diangsu Polytechnic University, Changzhou 213164 [2]Department of Physics, Nanjing Normal University, Nanjing 210097

出　　处：《Chinese Physics Letters》2010年第9期81-83,共3页中国物理快报（英文版）

基　　金：Supported in part by the National Natural Science Foundation of China under Grant No 60778041, and the Physics and Mathematics Foundation of Jiangsu Polytechnic University under Grant No zmf09020022.

摘　　要：We numerically study the negative index properties of sandwiched metamaterials, perforated with a square array of circle holes filled with different media. Transmission spectra indicate that the filling medium can effectively change the position of the localized resonant peak, while keeping the position of the other transmission peaks hardly changed. Reflection spectra and retrieved effective impedance verify that an appropriate choice of the filling medium can provide a perfect impedance match. Due to the perfect impedance match, the electromagnetic responses of the negative index band based on the internal surface plasmon polaritons change in many aspects, such as a stronger magnetic resonance, a higher figure of merit and a narrower negative refractive index band.We numerically study the negative index properties of sandwiched metamaterials, perforated with a square array of circle holes filled with different media. Transmission spectra indicate that the filling medium can effectively change the position of the localized resonant peak, while keeping the position of the other transmission peaks hardly changed. Reflection spectra and retrieved effective impedance verify that an appropriate choice of the filling medium can provide a perfect impedance match. Due to the perfect impedance match, the electromagnetic responses of the negative index band based on the internal surface plasmon polaritons change in many aspects, such as a stronger magnetic resonance, a higher figure of merit and a narrower negative refractive index band.

分 类 号：O484.5[理学—固体物理] TU561.61[理学—物理]