Title :
A two-flux model of the optical properties of gold nanoparticles on a porous polymer substrate
Author :
Murphy, Anthony B. ; Raguse, Burkhard ; Myers, Jan ; Baxter, Geoffrey R. ; Glenn, A. Matthew ; Zeng, Nan ; Wieczorek, Lech
Author_Institution :
Mater. Sci. & Eng., CSIRO, Lindfield, NSW, Australia
Abstract :
The diffuse reflectance of films formed by the deposition of gold nanoparticles on a porous polymer substrate is investigated. Measured reflectances are compared with those calculated using a two-flux model of radiative transfer, modified to take into account the optically-rough surface. The required scattering and absorption coefficients of the nanoparticles are calculated using a standard Mie scattering method for optically-isolated particles, and the generalized-multiparticle-Mie method for clusters of particles. The calculated reflectances show good agreement with measurements for the films containing optically-isolated particles. Progress is described for the films containing clusters of particles.
Keywords :
Mie scattering; absorption coefficients; gold; nanoparticles; radiative transfer; reflectivity; Au; Mie scattering method; absorption coefficient; diffuse reflectance; generalized-multiparticle-Mie method; gold nanoparticle deposition; optical properties; optically-isolated particles; optically-rough surface; particle clusters; porous polymer substrate; radiative transfer; scattering coefficient; two-flux model; Absorption; Nanoparticles; Optical films; Optical scattering; Reflectivity; Kubelka-Munk model; absorption coefficient; diffuse reflectance; reflection coefficient; scattering coefficient;
Conference_Titel :
Nanoscience and Nanotechnology (ICONN), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-5261-3
Electronic_ISBN :
978-1-4244-5262-0
DOI :
10.1109/ICONN.2010.6045259
