Optical spectra of silver colloids within the framework of fractal physics

Citation
Sv. Karpov et al., Optical spectra of silver colloids within the framework of fractal physics, COLL J, 62(6), 2000, pp. 699-713
Citations number
34
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
COLLOID JOURNAL
ISSN journal
1061933X → ACNP
Volume
62
Issue
6
Year of publication
2000
Pages
699 - 713
Database
ISI
SICI code
1061-933X(200011/12)62:6<699:OSOSCW>2.0.ZU;2-Z
Abstract
Based on the theory of the optical properties of fractal clusters, an alter nate solution to the problem of adequately describing the evolution of opti cal spectra of any polydisperse silver colloids with particles falling with in a range of most characteristic sizes (5-30 nm), over which the results o f the application of the methods of classical electrodynamics including the Mie theory, disagree with experimental data, uas proposed. The effect of v arious parameters of such media on optical spectra was studied by a mathema tical simulation with allowance for particle electrodynamic intel action. A n obvious quantitative explanation is given for the reasons for the appeara nce of individual specific features in contours of the spectral absorption of different-type silver colloids.