Single particle plasmon spectroscopy of silver nanowires and gold nanorods.
The excitation of surface plasmons in individual silver nanowires and gold nanorods is investigated by means of high-resolution electron energy loss spectroscopy in a transmission electron microscope. The transverse and longitudinal modes of these nanostructures are resolved, and the size variation of the plasmon peaks is studied. The effect of electromagnetic coupling between closely spaced nanoparticles is also observed. Finally, the relation between energy-loss measurements and optical spectroscopy of nanoparticle plasmon modes is discussed.
N'Gom
Moussa
M
Applied Physics Department and Center for Ultrafast Optical Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA. mngom@umich.edu
Ringnalda
Jan
J
Mansfield
John F
JF
Agarwal
Ashish
A
Kotov
Nicholas
N
Zaluzec
Nestor J
NJ
Norris
Theodore B
TB
D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission / Q000379:methods; D015233:Models, Statistical; D036103:Nanotechnology / Q000379:methods; D043942:Nanotubes / Q000737:chemistry*; D053770:Nanowires / Q000737:chemistry*; D011827:Radiation; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
D012834:Silver; D006046:Gold