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).
Wei
Wei
W
Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
Li
Shuzhou
S
Millstone
Jill E
JE
Banholzer
Matthew J
MJ
Chen
Xiaodong
X
Xu
Xiaoyang
X
Schatz
George C
GC
Mirkin
Chad A
CA
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