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  Journal of Nanoscience Letters 2013, 3: 17
  Research Article
Factors affecting surface plasmon resonance of silver nanoparticle films grown by pulsed laser deposition
  B. Tirumala Raoa, Shweta Vermaa, Mohan Gangradeb, V. Ganesanb, L. M. Kukrejaa  
a Laser Materials Processing Division, Raja Ramanna Centre for Advanced Technology, Indore, India
b UGC-DAE Consortium for Scientific Research, Indore, India

  Silver films were grown in vacuum and helium ambience using pulsed laser deposition (PLD) and their optical responses were studied. Effect of different PLD process parameters for obtaining surface plasmon resonance (SPR) excitation in the optical response of the grown films was determined. Plasmon resonance characteristics of the grown nanoparticle films were greatly influenced by substrate temperature, target to substrate distance and number of laser pulses in PLD. Room temperature grown films were associated with red shifted SPR wavelength in comparison to those grown at high temperatures. Films which have shown strong plasmon resonance in the optical response consisted of densely packed nanoparticles. By varying the process parameters the plasmon resonance wavelength was tuned between 440-600 nm.
  Pulsed laser deposition; Silver nanoparticles; Optical response; Surface plasmon resonance  

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