Revealing the nanoparticles aspect ratio in the glass-metal nanocomposites irradiated with femtosecond laser.
We studied a femtosecond laser shaping of silver nanoparticles embedded in soda-lime glass. Comparing experimental absorption spectra with the modeling based on Maxwell Garnett approximation modified for spheroidal inclusions, we obtained the mean aspect ratio of the re-shaped silver nanoparticles as a function of the laser fluence. We demonstrated that under our experimental conditions the spherical shape of silver nanoparticles changed to a prolate spheroid with the aspect ratio as high as 3.5 at the laser fluence of 0.6 J/cm2. The developed approach can be employed to control the anisotropy of the glass-metal composites.
Institute of Photonics, University of Eastern Finland, P.O.Box 111 Joensuu, FI-80101 Finland.|Institute of Physics, Nanotechnology and Telecommunications, Peter the Great St. Petersburg Polytechnic University, 29 Polytechnicheskaya, St. Petersburg, 195251 Russia.
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Chervinskii
Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ UK.
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Drevinskas
Institute of Photonics, University of Eastern Finland, P.O.Box 111 Joensuu, FI-80101 Finland.|Department of Physics and Technology of Nanostructures, St. Petersburg Academic University, 8/3 Khlopina, St.-Petersburg, 194021 Russia.
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Karpov
Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ UK.
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Beresna
Institute of Physics, Nanotechnology and Telecommunications, Peter the Great St. Petersburg Polytechnic University, 29 Polytechnicheskaya, St. Petersburg, 195251 Russia.|Department of Physics and Technology of Nanostructures, St. Petersburg Academic University, 8/3 Khlopina, St.-Petersburg, 194021 Russia.
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Lipovskii
Institute of Photonics, University of Eastern Finland, P.O.Box 111 Joensuu, FI-80101 Finland.
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Svirko
Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ UK.|Advanced Laser Technologies Centre, Mendeleev University of Chemical Technology of Russia, 9 Miusskaya pl., Moscow, 125047 Russia.
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Kazansky