Optical Spectra and Color of Silver Colloids

Authors N.L. Dmitruk1, S.Z. Malynych1, I.E. Moroz2

1 V. Lashkarev Institute of Semiconductor Physics NAS of Ukraine, 41б Nauky Ave., 03028 Kyiv, Ukraine

2 National University “Lviv Polytechnic”, 12, S. Bandery Str., 79013 Lviv, Ukraine

Е-mail s.malynych@gmail.com
Issue Volume 5, Year 2013, Number 3
Dates Received 25 January 2013; published online 17 October 2013
Citation N.L. Dmitruk, S.Z. Malynych, I.E. Moroz, J. Nano- Electron. Phys. 5 No 3, 03031 (2013)
PACS Number(s) 78.40. – q, 78.66.Vs, 42.66.Ne
Keywords Silver nanoparticles (4) , Colloid (12) , Optical spectra, Localized plasmon resonances, Color diagram.
Annotation In present work, the color features of the aqueous silver suspensions were investigated. Color systems CIE XYZ and CIELAB are considered. In the case of low concentrations of nanoparticles chromaticity coordinates were determined from the transmission spectra of the colloids. For high concentrations of nanoparticles, when the multiple scattering effects play a key role and the medium turns to be turbid, the color of nanoparticles was found using the Kubelka-Munk relation. Experimental data is compared with that calculated from the Mie theory. Color features of a planar array of non-interacting silver nanoparticles are discussed for the first time.

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