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Off-axis PLD: A novel technique for plasmonic engineering of silver nanoparticles

C. L.VEENAS1, K. M. NISSAMUDEEN1, S. L. SMITHA1, V. BIJU1, K.G.GOPCHANDRAN2,*

Affiliation

  1. Department of Optoelectronics, University of Kerala, Thiruvananthapuram-695 581, India
  2. Department of Physics, University of Kerala, Thiruvananthapuram-695 581, India

Abstract

Silver nanoparticles of different sizes were prepared by implementing pulsed laser deposition technique by varying the laser energy density and deposition time. The synthesized samples are characterized by UV-visible absorption spectra, Mie plot studies, SEM and AFM. By implementing the off-axis PLD technique for a laser energy density of 12 J/cm2 and ablation time 30 minutes, a sharp SPR band is observed indicating high monodispersity and smaller particle size. The morphology shows nanocrystalline nature of silver particles with well defined boundaries. An attempt has also been made to understand the influence of chloride addition on the plasmonic character of the nanoparticles..

Keywords

Silver nanoparticles, Pulsed laser ablation, Surface plasmon resonance.

Submitted at: Feb. 15, 2009
Accepted at: Feb. 24, 2009

Citation

C. L.VEENAS, K. M. NISSAMUDEEN, S. L. SMITHA, V. BIJU, K.G.GOPCHANDRAN, Off-axis PLD: A novel technique for plasmonic engineering of silver nanoparticles, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 2, pp. 114-122 (2009)