Reorganizing and shaping of embedded near-coalescence silver nanoparticles with off-resonance femtosecond laser pulses.

@article{Baraldi2013ReorganizingAS,
  title={Reorganizing and shaping of embedded near-coalescence silver nanoparticles with off-resonance femtosecond laser pulses.},
  author={Giovanna Baraldi and Jos{\'e} Gonzalo and J. Solis and Jan Siegel},
  journal={Nanotechnology},
  year={2013},
  volume={24 25},
  pages={255301}
}
We demonstrate that 2D distributions of non-spherical near-coalescence silver nanoparticles (NPs) embedded in an ultrathin dielectric film can be reorganized, shaped and aligned by exposure to ultrashort laser pulses. As-grown samples prepared by pulsed laser deposition show a broad absorption band with a surface plasmon resonance (SPR) at 650 nm, which can be blue-shifted down to 440 nm and transformed to show polarization anisotropy. In situ white light probing of the spectral sample… CONTINUE READING

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