Estimation of Size and Concentration of Silver Nanoparticles in Aqueous Suspensions From Extinction Spectra

Author(s) S.Z. Malynych
Affiliations V.E. Lashkaryov Institute for Physics of Semiconductors NAS of Ukraine, 41, Nauky Avenue, 03028, Kyiv, Ukraine
Issue Volume 2, Year 2010, Number 4
Dates Received 26 November 2010, in final form 29 December 2010
Citation S.Z. Malynych, J. Nano- Electron. Phys. 2 No4, 94 (2010)
PACS Number(s) 81.07.Bc, 78.67.Bf
Key words Silver nanoparticles (4) , Colloid (11) , Extinction spectra, Localized surface plasmon resonance.
The size and concentration of silver nanoparticles suspended in water can be easily determined from their extinction spectra. This is due to the strong correlation of the localized surface plasmon resonances which are excited by electromagnetic radiation inside nanoparticles with size and shape of metal nanoparticles. Calibration curve obtained from Mie theory calculations for silver nanoparticles suspended in water is presented. A comparison with published experimental data is also discussed.