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论文期刊

论文标题    Tunable band width of negative dielectric constant of gold nanoshells thin film
作者    jian zhu
发表/完成日期    2009-07-01
期刊名称    Materials Chemistry and Physics
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论文简介    Negative dielectric constant in gold nanoshells thin film has been investigated by means of Maxwell–Garnett (MG) effective medium model and quasi-static theory. Numerical calculation results show that the real part of average dielectric constant may change fromnegative, through zero to positive values near the resonancewavelength. The negative band width can be tuned by changing the local environment dielectric or gold shell thickness. The surrounding dielectric constant and thin shell thickness have greater capability to alter the negative wavelength range. © 2009 Elsevier B.V. All rights reserved.
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