Applied Physics B

, Volume 73, Issue 4, pp 317–326

The color of finely dispersed nanoparticles

  • M. Quinten

DOI: 10.1007/s003400100666

Cite this article as:
Quinten, M. Appl Phys B (2001) 73: 317. doi:10.1007/s003400100666

Abstract.

We discuss the dependence of the color of low-concentrated nanoparticle systems on particle size and mass concentration for Ag, Au and TiN nanoparticles, which exhibit a surface plasmon polariton resonance in extinction spectra. Comparison is made with color data obtained for Ag and Au colloidal suspensions.

When particles lump into aggregates, the splitting of the surface plasmon resonance into new resonances affects the extinction of light and, hence, the color of the particle assembly. This is demonstrated for aggregated colloidal suspensions of Ag and Au nanoparticles.

Finally, for highly concentrated assemblies such as pigment films, we discuss the dependence of the color in diffuse reflectance and transmittance according to Kubelka and Munk (P. Kubelka, F. Munk: Z. Techn. Phys. 12, 593 (1931)), and extend this model by using optical properties of aggregates of spheres.

PACS: 78.40.-q; 78.66.Vs; 82.70.-y; 82.80.Ch 

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • M. Quinten
    • 1
  1. 1.Mauritiusstrasse 7, 52457 Aldenhoven, GermanyDE

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