TITLE

Negative index metamaterials based on metal-dielectric nanocomposites for imaging applications

AUTHOR(S)
Menon, L.; Lu, W. T.; Friedman, A. L.; Bennett, S. P.; Heiman, D.; Sridhar, S.
PUB. DATE
September 2008
SOURCE
Applied Physics Letters;9/22/2008, Vol. 93 Issue 12, p123117
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Negative index metamaterials are demonstrated based on metal-dielectric nanocomposites prepared using a versatile bottom-up nanofabrication approach. The method involves the incorporation of vertically aligned metal nanowires such as Au and Ag inside dielectric aluminum oxide nanotemplates. Optical absorbance measurements show resonance peaks corresponding to the transverse and longitudinal surface plasmon modes. A quantitative model based on effective medium theory is in excellent agreement with experimental data, and points to specific composite configurations and wavelength regimes where such structures can have applications as negative refraction media for imaging.
ACCESSION #
34647384

 

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