Generating narrow plasmon resonances from silver nanoparticle arrays

Influence of array pattern and particle spacing

Shengli Zou, George C Schatz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

The extinction spectra of silver nanoparticle arrays are studied using the couple dipole (CD) method, with emphasis on determined the array pattern and particle spacing which produces the narrowest plasmon resonances. All calculations refer to one and two dimensional arrays of spherical particles having radii 50 nm (or of nonspherical particles with the equivalent effective volume), and only particle spacings much larger than the particle radius are considered so that the dipole approximation is accurate. The narrowest lines in all cases occur when the incident wave vector is perpendicular to the plane of the array while the polarization vector is in the plane and along a symmetry axis which depends on the array structure. We find that the narrowest plasmon bands for square and hexagonal arrays have about the same width (about 100 meV), but that the array spacing for the square array where this occurs is smaller than that for the hexagonal array. The comparison at constant array density is closer. Much smaller widths (20 meV) occur for one dimensional arrays than for two dimensional arrays. For rectangular lattices, we find that the array spacings perpendicular to the polarization vector play a much more important role in determining the plasmon wavelength and width than do spacings parallel to the polarization vector. The evolution of spectra from a two dimensional array to a one dimensional chain is studied by considering rectangular arrays in which one spacing is very large. We find that when the large spacing is 5000 nm or more, the interactions between rows of particles is weak and extinction spectrum has a narrow peak that matches what is seen for the equivalent one dimensional chain.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsG.V. Hartland, X.-Y. Zhu
Pages22-29
Number of pages8
Volume5513
DOIs
Publication statusPublished - 2004
EventPhysical Chemistry of Interfaces and Nanomaterials III - Denver, CO, United States
Duration: Aug 3 2004Aug 6 2004

Other

OtherPhysical Chemistry of Interfaces and Nanomaterials III
CountryUnited States
CityDenver, CO
Period8/3/048/6/04

Fingerprint

Silver
silver
spacing
Nanoparticles
nanoparticles
Polarization
Wavelength
extinction
polarization
dipoles
radii

Keywords

  • Array
  • Nanoparticle
  • Narrow plasmon peaks
  • Pattern

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Zou, S., & Schatz, G. C. (2004). Generating narrow plasmon resonances from silver nanoparticle arrays: Influence of array pattern and particle spacing. In G. V. Hartland, & X-Y. Zhu (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5513, pp. 22-29). [A-09] https://doi.org/10.1117/12.556064

Generating narrow plasmon resonances from silver nanoparticle arrays : Influence of array pattern and particle spacing. / Zou, Shengli; Schatz, George C.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / G.V. Hartland; X.-Y. Zhu. Vol. 5513 2004. p. 22-29 A-09.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zou, S & Schatz, GC 2004, Generating narrow plasmon resonances from silver nanoparticle arrays: Influence of array pattern and particle spacing. in GV Hartland & X-Y Zhu (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5513, A-09, pp. 22-29, Physical Chemistry of Interfaces and Nanomaterials III, Denver, CO, United States, 8/3/04. https://doi.org/10.1117/12.556064
Zou S, Schatz GC. Generating narrow plasmon resonances from silver nanoparticle arrays: Influence of array pattern and particle spacing. In Hartland GV, Zhu X-Y, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5513. 2004. p. 22-29. A-09 https://doi.org/10.1117/12.556064
Zou, Shengli ; Schatz, George C. / Generating narrow plasmon resonances from silver nanoparticle arrays : Influence of array pattern and particle spacing. Proceedings of SPIE - The International Society for Optical Engineering. editor / G.V. Hartland ; X.-Y. Zhu. Vol. 5513 2004. pp. 22-29
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