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Laser induced surface processing with gold nanoparticle arrays embedded in a transparent matrix

Askari, A. A ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1142/S1793292013500033
  3. Publisher: 2013
  4. Abstract:
  5. Gold nanoparticles are widely used as high efficient photon-thermal energy converters in a broad range of applications. This paper presents a theoretical investigation on using the optothermal properties of gold nanoparticle arrays to generate nanoscale molten and rubbery regions on the surface of an amorphous polymeric film. Nanoparticles are assumed to be embedded in a transparent silica layer and illuminated with a 7.5 ns pulsed laser at 532 nm. Simulation results are presented for systems with single gold nanoparticles, dimers and chains. Both electromagnetic and thermal interaction between nanoparticles are found to be important factors in determining the result of surface processing. This effect allows us to control the shape and spatial characteristics of the phase transmitted regions with various parameters such as particles size, incident light fluence, polarization and direction, interparticle distance and chain length
  6. Keywords:
  7. Electromagnetic interaction ; Phase transition ; Electromagnetic interactions ; Energy converters ; Gold Nanoparticles ; Gold-nanoparticle arrays ; High efficient ; Incident light ; Interparticle distances ; Laser induced ; Nano scale ; Optothermal response ; Particles sizes ; Silica layers ; Spatial characteristics ; Surface processing ; Theoretical investigations ; Thermal interaction ; Transparent matrix ; Electromagnetism ; Metal nanoparticles ; Phase transitions ; Gold
  8. Source: Nano ; Volume 8, Issue 1 , January , 2013 ; 17932920 (ISSN)
  9. URL: http://www.worldscientific.com/doi/abs/10.1142/S1793292013500033