Experimental test of the Mie theory for microlithographically produced silver spheres

Russell, Bob; Mantovani, J. G.; Anderson, V. E.; Warmack, R. J.; Ferrell, T. L.

doi:10.1103/physrevb.35.2151

Cited by 52 publications

(23 citation statements)

References 5 publications

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“…In the survey of the l p of supported silver NPs [15][16][17][18][19][20][21], it is found that the reported l p values are between 380 and 500 nm, larger than that predicted by the Mie's theory (370 nm [22]); the experimental data vary from lab to lab. Furthermore, all the optical absorption spectra reported are found to be much broader than the calculated one [22], with a few exceptions [19,20].…”

Section: Introductionmentioning

confidence: 74%

Blueshift and Narrowing of Localized Surface Plasmon Resonance of Silver Nanoparticles Exposed to Plasma

et al. 2011

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We have demonstrated that plasma treatments of silver nanoparticles bring about blueshift and narrowing in their localized surface plasmon resonance. Surface-enhanced Raman scattering analysis revealed that hydrocarbons adsorbed on silver surfaces were removed effectively by plasma exposure. It was found that the decrease in Raman line intensity for hydrocarbons was correlated well with the blueshift. Our findings indicate that one of the most important factors for remarkable differences in plasmon resonance wavelengths and line widths reported for the silver nanoparticles supported on substrates between most of the experimental data and calculations by Mie's theory is due to the impurity adsorption on silver surfaces.

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Section: Introductionmentioning

confidence: 74%

Blueshift and Narrowing of Localized Surface Plasmon Resonance of Silver Nanoparticles Exposed to Plasma

et al. 2011

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“…The good agreement between the Mie theory and the experimental spectra (Fig. 10) rather suggests that the resonance appearing as a shoulder in the extinction spectra is an inherent property of the Ag particles and can therefore be attributed to excitation of the quadrupole (l = 2) mode (see also [25][26][27]). …”

Section: Ag Clustersmentioning

confidence: 96%

Characterization of large supported metal clusters by optical spectroscopy

Götz

Hoheisel

Vollmer

et al. 1995

Z Phys D - Atoms, Molecules and Clusters

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Abstract. Small sodium and silver particles were generated on dielectric substrates like LiF, quartz and sapphire under ultrahigh vacuum conditions. The optical transmission spectra of the clusters were measured as a function of cluster size and shape, for low and high substrate temperatures as well as for s-and p-polarization of the incident light. Excitation of dipolar surface plasmon oscillations in the directions normal and parallel to the substrate surface could be identified. Furthermore, optical spectra for Na and Ag clusters were calculated with the classical Mie theory. The measured spectra vary strongly if the experimental conditions are changed and can be exploited, for example, to characterize the particles with regard to their size and shape. In particular, the axial ratio of the spheroidal clusters could be determined. Its value is considerably different for the two investigated metals and depends on the substrate material. Furthermore, the temperature of the substrate has a pronounced influence on the shape of the particles. At low temperature of T = 100 K twodimensional island growth is predominant. The particles extend only little in the direction perpendicular to the surface and coalesce readily at small coverage of metal atoms. In contrast, the clusters are truly threedimensional at T = 300 K. At this stage, sodium particles still exhibit a rather small axial ratio whereas silver clusters appear almost spherical. Thus, measurements of the optical spectra permit direct in situ monitoring of cluster growth during the nucleation of adsorbed atoms and of temperature induced shape variations. In addition to investigations of the shape of the particles, the quadrupolar surface plasmon mode was observed for Ag clusters.

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“…Because of the large size, we assume that the nonlinear properties (such as the second order suszeptibility X2) of the spherical surfaces are the same as for a planar bulk surface. Important differences then only arise because of the Mie-resonances [6][7][8], which can be directly excited by the incident radiation. These collective resonances strongly increase the local fields at the surface of the sphere and thus the higher harmonic generation.…”

Section: Introductionmentioning

confidence: 99%

Theory of nonlinear optical properties of small metallic spheres

Östling

Stampfli

Bennemann

1993

Z Phys D - Atoms, Molecules and Clusters

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Abstract.We calculate the nonlinear optical properties of small metallic spheres using electromagnetic theory and assuming that the local response of the conduction electrons is the same as for a plane surface. Electromagnetic Mie-resonances cause a strong increase of the second and higher harmonics in the reflected light. Detailed results are given for the second and third harmonic generation, its dependence on the frequency and polarization of the incident light, and on the cluster size. An enhancement of the second harmonic generation by a factor of about 5000 is obtained for small spherical metallic clusters. This is in good agreement with experiments on artificially roughened metal surfaces.

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Experimental test of the Mie theory for microlithographically produced silver spheres

Cited by 52 publications

References 5 publications

Blueshift and Narrowing of Localized Surface Plasmon Resonance of Silver Nanoparticles Exposed to Plasma

Blueshift and Narrowing of Localized Surface Plasmon Resonance of Silver Nanoparticles Exposed to Plasma

Characterization of large supported metal clusters by optical spectroscopy

Theory of nonlinear optical properties of small metallic spheres

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