Novel fabrication of an Au nanocone array on polycarbonate for high performance surface-enhanced Raman scattering
Resource
JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 21(3), 035023
Journal
Journal of Micromechanics and Microengineering
Pages
35023
Date Issued
2011
Date
2011
Author(s)
Abstract
Surface-enhanced Raman scattering (SERS) with enormous enhancements has been applied for ultra-sensitive detection in various fields, but the fabrication of large-scale, controllable and cost-effective substrates is a major challenge. We propose a novel fabrication process with a gas-assisted hot embossing process and an anodic aluminum oxide template to obtain the SERS substrate on a 1 �� 1 cm polycarbonate film. The SERS spectra of 4-mercaptobenzoic acid (PMBA) on the gold substrate have been measured. The enhancement factors are between 3.99 �� 107 and 4.92 �� 107, depending on the heights of nanocones, which can be controlled by the embossing temperature and pressure. The simple and inexpensive SERS substrate has potential for wide application in SERS-based sensors.
Type
journal article
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