Nano Express

Nanoscale Research Letters

, Volume 4, Issue 11, pp 1380-1383

Open Access This content is freely available online to anyone, anywhere at any time.

Laser-Induced, Polarization Dependent Shape Transformation of Au/Ag Nanoparticles in Glass

  • G. SeifertAffiliated withInstitut für Physik, Fachgruppe Optik, Martin-Luther-Universität Halle-Wittenberg Email author 
  • , A. StalmashonakAffiliated withInstitut für Physik, Fachgruppe Optik, Martin-Luther-Universität Halle-Wittenberg
  • , H. HofmeisterAffiliated withMax-Planck-Institut für Mikrostrukturphysik
  • , J. HaugAffiliated withInstitut für Physik, Fachgruppe ANM, Martin-Luther-Universität Halle-Wittenberg
  • , M. DubielAffiliated withInstitut für Physik, Fachgruppe ANM, Martin-Luther-Universität Halle-Wittenberg

Abstract

Bimetallic, initially spherical Ag/Au nanoparticles in glass prepared by ion implantation have been irradiated with intense femtosecond laser pulses at intensities still below the damage threshold of the material surface. This high-intensity laser processing produces dichroism in the irradiated region, which can be assigned to the observed anisotropic nanoparticle shapes with preferential orientation of the longer particle axis along the direction of laser polarization. In addition, the particle sizes have considerably been increased upon processing.

Keywords

Alloy nanoparticles Glass Laser irradiation Femtosecond laser processing Dichroism