Reusable three-dimensional nanostructured substrates for surface-enhanced Raman scattering.

Content Provider	Europe PMC
Author	Zhu, Zhendong Li, Qunqing Bai, Benfeng Fan, Shoushan
Copyright Year	2014
Abstract	To date, fabricating three-dimensional (3D) nanostructured substrate with small nanogap was a laborious challenge by conventional fabrication techniques. In this article, we address a simple, low-cost, large-area, and spatially controllable method to fabricate 3D nanostructures, involving hemisphere, hemiellipsoid, and pyramidal pits based on nanosphere lithography (NSL). These 3D nanostructures were used as surface-enhanced Raman scattering (SERS) substrates of single Rhodamine 6G (R6G) molecule. The average SERS enhancement factor achieved up to 1011. The inevitably negative influence of the adhesion-promoting intermediate layer of Cr or Ti was resolved by using such kind of 3D nanostructures. The nanostructured quartz substrate is a free platform as a SERS substrate and is nondestructive when altering with different metal films and is recyclable, which avoids the laborious and complicated fabricating procedures.
ISSN	19317573
Journal	Nanoscale Research Letters
Volume Number	9
PubMed Central reference number	PMC3898998
Issue Number	1
PubMed reference number	24417892
e-ISSN	1556276X
DOI	10.1186/1556-276x-9-25
Language	English
Publisher	Springer
Publisher Date	2014-01-13
Access Restriction	Open
Rights License	This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Copyright © 2014 Zhu et al.; licensee Springer.
Subject Keyword	Three-dimensional (3D) nanostructure Nanosphere lithography Surface-enhanced Raman scattering (SERS)
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Materials Science