Abstract

Five gold nanohole arrays with distinct aperture size were fabricated by magnetron sputtering technique. Fluorescence enhancements of Rh6G fluorophore in the close vicinity of gold nanohole arrays were observed. Up to 40 times increase of fluorescence intensity was obtained from gold nanohole arrays as compared with a smooth gold surface control sample. A double-peak curve was presented in the excitation spectrum of enhanced fluorescence emission when the excitation wavelength was scanning from 300 nm to 550 nm. It was found that smaller aperture size and proper excitation wavelength matching with the surface plasmon resonances condition were favorable for a better fluorescence enhancement.

Authors

Zhang Z, Zheng H, Liu M, Zhang H, Yin B, Zhang H

Institution

College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, P. R. China.

Source

Journal of nanoscience and nanotechnology 11:11 2011 Nov pg 9803-7

MeSH

Fluorescent Dyes
Gold
Microscopy, Electron, Scanning
Nanopores
Rhodamines
Surface Plasmon Resonance
Surface Properties

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22413298