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|Title:||Synthesis, characterization, and nonlinear optical properties of copper nanoparticles|
|Authors:||Huang, H.H. |
|Source:||Huang, H.H.,Yan, F.Q.,Kek, Y.M.,Chew, C.H.,Xu, G.Q.,Ji, W.,Oh, P.S.,Tang, S.H. (1997-01-22). Synthesis, characterization, and nonlinear optical properties of copper nanoparticles. Langmuir 13 (2) : 172-175. ScholarBank@NUS Repository.|
|Abstract:||In this paper, copper nanoparticles were prepared by the reduction of copper(II) acetate in water and 2-ethoxyethanol using hydrazine under reflux. The synthesized nanoparticles exhibit a distinct absorption peak in the region 572-582 nm. The average size variation from 6.6 to 22.7 nm in ethoxyethanol and from 15.5 to 30.2 nm in water was achieved by the addition of various amounts of a protective polymer (polyN-vinylpyrrolidone)). The nonlinear optical properties of the copper colloids were first measured using the Z-scan technique. The χ(3)/α0 values obtained were found to be of the magnitude of 10-11-10-12 esu cm, which are in good agreement with the reported values obtained for copper nanoparticles embedded in glass.|
|Appears in Collections:||Staff Publications|
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