Three-dimensional composite metallodielectric nanostructure for enhanced surface plasmon resonance sensing

被引：16
|
作者：
Chen, Haiping Matthew [1 ]
Pang, Lin [1 ]
Kher, Aditya [1 ]
Fainman, Yeshaiahu [1 ]
机构：
[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA
来源：
APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 07期
关键词：
adsorption; nanostructured materials; optical sensors; surface plasmon resonance; DIFFRACTION GRATINGS; NANOHOLE ARRAYS; TRANSMISSION; METALS; FILMS;
D O I：
10.1063/1.3083551
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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.
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页数：3
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