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The extended Kubelka-Munk theory and its application to colloidal systems

Abstract: The use of nanoparticles is spreading in many fields and a frequent way of preparing them is in the form of colloids, whose characterization becomes increasingly important. The spectral reflectance and transmittance curves of such colloids exhibit a strong dependence with the main parameters of the system. By means of a two-flux model we have performed a colorimetric study of gold colloids varying several parameters of the system, including the radius of the particles, the particle number density, the thickness of the system and the refractive index of the surrounding medium. In all cases, trajectories in the L?a?b? color space have been obtained, as well as the evolution of the luminosity, chroma and hue, either for reflectance or transmittance. The observed colors agree well with typical colors found in the literature for colloidal gold, and could allow for a fast assessment of the parameters involved, e.g., the radius of the nanoparticle during the fabrication process.

Other conference communications or articles related to authors from the University of Cantabria

 Congress: International Conference on Applications of Optics and Photonics (3ª : 2017 : Faro)

 Publisher: SPIE Society of Photo-Optical Instrumentation Engineers

 Publication date: 01/08/2017

 No. of pages: 8

 Publication type: Conference object

 DOI: 10.1117/12.2272115

 ISSN: 0277-786X,1996-756X

 Spanish project: FIS2013-45854-P

 Publication Url: