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Nonlinear Responses and Optical Limiting Behavior of Ag Nano-Particles

[+] Author Affiliations
M. H. Majles Ara, S. Salmani

Tarbiat Moallem University, Tehran, Iran

Z. Dehghani, E. Saievar Iranizad

Tarbiat Modares University, Tehran, Iran

Paper No. MicroNano2008-70174, pp. 257-260; 4 pages
doi:10.1115/MicroNano2008-70174
From:
  • 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems
  • 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems
  • Clear Water Bay, Kowloon, Hong Kong, June 3–5, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4294-0 | eISBN: 0-7918-3819-6
  • Copyright © 2008 by ASME

abstract

Ag nano-particles have been synthesized and the formation and microstructure of Ag particles, were monitored by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Visible spectrum and z-scan technique. XRD pattern confirmed the cubic structure of the synthesized material. The UV-Visible spectrum of this material shows an absorption peak about 200 nm wavelengths. Optical limiting (OL) property of Ag nano-particles is studied. The nonlinear refractive indices of Ag nano-particles were defined by the z-scan technique using CW He-Ne laser (λ = 632.8 nm) at different incident intensities. The results reveal that the new complex exhibits strong nonlinear optics refraction effect such as self-focusing and the magnitude of n2 was measured in order of 10−7 (cm2 /W) with a negative sign.

Copyright © 2008 by ASME
Topics: Nanoparticles

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