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  Journal of Nanoscience Letters 2013, 3: 11
  Research Article
 
Aluminium-Gold nanocomposites prepared by pulsed laser ablation
  Rina Singh, R. K. Soni  
     
Physics Department, Indian Institute of Technology Delhi, New Delhi 110016, India
   
  Abstract  
  Bimetallic Au/Al nanocomposites are synthesized by Pulsed Laser Ablation in Liquid (PLAL) technique in pure water and in 0.0001 mM aqueous poly(N-vinyl-2-pirrolidone) solution. A two-step laser ablation method, involving ablation of pure Al followed by ablation of Au in solution containing Al nanoparticles, was used for the synthesis of nanocomposites in the polymer matrix and in water to study the effect of polymer addition on the size, size distribution and stability of the nanocomposites. Localized surface plasmon resonance (LSPR) absorption and morphology of the nanocomposites show that the nanocomposites formed in PVP solution have core-shell morphology, small particle size, long-term stability and weak oxidation effect. A novel approach for the synthesis of Au (core)-Al (shell) or Al (core)-Au (shell) bimetallic nanoparticles via laser ablation route is presented.
     
  Keywords  
  Laser ablation in liquid; Nanocomposites; Bimetallic nanoparticles; Localized surface plasmon resonance (LSPR)  
     
   
   
   
   
     

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