Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 45, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/45/4/045102
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Funding
- NSF [DMR-0907614]
- US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0907614] Funding Source: National Science Foundation
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We report far-field experimental optical extinction spectra of linear chains of gold nanocylinders with interparticle separations close to the particle's surface plasmon resonance (SPR) wavelength lambda(SPR). The spectra reveal non-monotonic shift of the SPR peak position with increase in the distance d. The non-monotonic lambda(SPR)(d) dependence is rationalized considering electromagnetic coupling between the particles in the dipole approximation. Simple expressions for the modified SPR frequencies are obtained using the dipole scattered field and taking into account both the retardation and phase lag effects.
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