Three-dimensional composite metallodielectric nanostructure for enhanced surface plasmon resonance sensing
نویسندگان
چکیده
The authors simulated, fabricated, and characterized a mushroomlike composite metallodielectric nanostructure that shows improved characteristics for surface plasmon resonance sensing applications with an enhancement in the normal electric field compared to the conventional nanohole structure. A fabrication method is introduced to give controllable linewidth by an oblique metal deposition process. A sensor built with the composite nanostructure was then used to determine the hydrophilicity of its surface by monitoring the resonant wavelength shift and computing the corresponding adsorption thickness. © 2009 American Institute of Physics. DOI: 10.1063/1.3083551
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