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Issue 4, 2016

Large-scale growth of sharp gold nano-cones for single-molecule SERS detection

Author affiliations

Abstract

We report a novel approach for large-scale gold nano-cone growth by utilizing the open nanopore channels of nanoporous gold films as both the template for nano-cone growth and the delivery channel of the reduction gas through the nano-pipes. Quasi-periodic nano-cone arrays uniformly sprout on the centimeter-sized free-standing nanoporous gold films. The sharp nano-cones give rise to ultrahigh surface enhanced Raman scattering for single molecule detection from the focused electromagnetic fields at the cone apexes. The large-scale nano-cone decorated nanoporous gold films may serve as high-performance SERS substrates for wide-ranging applications in ultrasensitive instrumentation and molecule diagnostics.

Graphical abstract: Large-scale growth of sharp gold nano-cones for single-molecule SERS detection

Supplementary files

Article information


Submitted
25 Oct 2015
Accepted
01 Dec 2015
First published
03 Dec 2015

RSC Adv., 2016,6, 2882-2887
Article type
Paper
Author version available

Large-scale growth of sharp gold nano-cones for single-molecule SERS detection

L. Zhang, H. Liu, L. Chen, P. Guan, B. Chen, T. Fujita, Y. Yamaguchi, H. Iwasaki, Q. Xue and M. Chen, RSC Adv., 2016, 6, 2882 DOI: 10.1039/C5RA22321K

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