Ultra-sensitive graphene-plasmonic hybrid platform for label-free detection.
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.
Department of Materials Science and Engineering and California Nano Systems Institute (CNSI), University of California, Los Angeles, Los Angeles, CA 90095-1595, USA.
Pu
P
Wang
Owen
O
Liang
Wei
W
Zhang
Thomas
T
Schroeder
Ya-Hong
YH
Xie
D015374:Biosensing Techniques / Q000379:methods*; D006046:Gold / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D012235:Rhodamines / Q000032:analysis; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties
D012235:Rhodamines; C026188:rhodamine 6G; D006046:Gold; D006108:Graphite
graphene hybrid system; label-free detection; single molecule detection; surface-enhanced Raman scattering