Ultra-sensitive graphene-plasmonic hybrid platform for label-free detection

Pu Wang; Owen Liang; Wei Zhang; Thomas Schroeder; Ya-Hong Xie

doi:10.1002/adma.201300635

Ultra-sensitive graphene-plasmonic hybrid platform for label-free detection

Adv Mater. 2013 Sep 20;25(35):4918-24. doi: 10.1002/adma.201300635. Epub 2013 Aug 6.

Authors

Pu Wang¹, Owen Liang, Wei Zhang, Thomas Schroeder, Ya-Hong Xie

Affiliation

¹ Department of Materials Science and Engineering and California Nano Systems Institute (CNSI), University of California, Los Angeles, Los Angeles, CA 90095-1595, USA.

PMID: 23922275
DOI: 10.1002/adma.201300635

Abstract

A graphene-Au nano-pyramid hybrid system that enables label-free single molecule detection is demonstrated. The bio-compatible graphene-based SERS platform boosts a high density of hot spots with local SERS enhancement factor over 10(10) . We demonstrate that graphene can play a key role in quantitative study of SERS mechanisms, and can also serve as a promising building block in SERS active structures especially for biosensor applications.

Keywords: graphene hybrid system; label-free detection; single molecule detection; surface-enhanced Raman scattering.

Publication types

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

MeSH terms

Biosensing Techniques / methods*
Gold / chemistry
Graphite / chemistry*
Nanostructures / chemistry
Rhodamines / analysis
Spectrum Analysis, Raman / methods*
Surface Properties

Substances

Rhodamines
rhodamine 6G
Gold
Graphite