Controlling plasmon line shapes through diffractive coupling in linear arrays of cylindrical nanoparticles fabricated by electron beam lithography.
The effect of diffractive coupling on the collective plasmon line shape of linear arrays of Ag nanoparticles fabricated by electron beam lithography has been investigated using Rayleigh scattering spectroscopy. The array spectra exhibit an intricate multi-peak structure, including a narrow mode that gains strength for interparticle distances that are close to the single particle resonance wavelength. A version of the discrete dipole approximation method provides an excellent qualitative description of the observed behavior.
Hicks
Erin M
EM
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
Zou
Shengli
S
Schatz
George C
GC
Spears
Kenneth G
KG
Van Duyne
Richard P
RP
Gunnarsson
Linda
L
Rindzevicius
Tomas
T
Kasemo
Bengt
B
Käll
Mikael
M
D004583:Electrons; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods*
D012834:Silver