Journal
OPTICAL MATERIALS
Volume 73, Issue -, Pages 384-387Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2017.08.026
Keywords
Silver nanoparticles; Curcumin; Non linear optical study; Open aperture Z-scan method
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Funding
- Higher Education Department of Kerala through FLAIR National Internship
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Metal nanoparticles have considerable applications in assorted fields like medicine, biology, photonics, metallurgy etc. Optical applications of Silver nanoparticles are of significant interest among researchers nowadays. In this paper, we report a single step chemical reduction of silver nanoparticles with Cur cumin both as a reducing and stabilising agent at room temperature. Structural, plasmonic and non linear optical properties of the prepared nanoparticles are explored using Scanning Electron Microscope, Transmission Electron Microscope, UV absorption spectrometry, Spectroflurometry and Z scan. UV-Vis absorption studies affirm the Surface Plasmon Resonance (SPR) absorption and spectrofiurometric studies announce the emission spectrum of the prepared silvernanoparticles at 520 nm. SEM and TEM images uphold the existence of uniform sized, spherical silvernanoparticles. Nonlinear optical studies are accomplished with the open aperture z scan technique in the nanosecond regime. The nonlinearity is in virtue of saturable absorption, two-photon absorption and excited state absorption. The marked nonlinearity and optical limiting of the Curcumin reduced silvernanoparticles enhances its photonic applications. (C) 2017 Elsevier B.V. All rights reserved.
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