Surprisingly long-range surface-enhanced Raman scattering (SERS) on Au-Ni multisegmented nanowires.
Very long range surface-enhanced Raman scattering is observed from a nickel nanowire that is separated by 120 nm from a pair of gold nanodisks. The excitation of the surface-plasmon resonance (SPR) from the gold nanodisk pair generates an enhanced electromagnetic field near the nickel segment (SEM, left), leading to Raman intensity greater than the nickel alone (right).
Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
Wei
W
Wei
Shuzhou
S
Li
Jill E
JE
Millstone
Matthew J
MJ
Banholzer
Xiaodong
X
Chen
Xiaoyang
X
Xu
George C
GC
Schatz
Chad A
CA
Mirkin
D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D053770:Nanowires / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods*
D006046:Gold; D009532:Nickel