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CW laser‐initiated formation of nano‐Si crystals in glass‐metal nanostructures
Author(s) -
Babich Ekaterina S.,
Redkov Alexey V.,
Melehin Vladimir G.,
Khlopin Dmitry,
Béal Jérémie,
Laux Frédéric,
Gérard Davy,
Lipovskii Andrey A.
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17094
Subject(s) - materials science , laser , silicon , surface plasmon resonance , nanocrystalline material , borosilicate glass , wavelength , raman scattering , optoelectronics , raman spectroscopy , nano , nanostructure , optics , irradiation , nanoparticle , nanotechnology , composite material , physics , nuclear physics
Local and controllable growth of nanocrystalline silicon (nano‐Si) in a commercial borosilicate glass is demonstrated. The nano‐Si was formed in the subsurface region of the glass via aluminothermic reaction in the course of the irradiation of a 2D array of aluminum nanodisks fabricated on the glass surface with CW low‐power 633 and 532 nm lasers. The thermoplasmonic nature of the nanodisks heating is demonstrated: at low incident intensity, the phenomenon takes place only if the plasmon resonance of the array and the laser wavelength is close enough. However, when the laser beam intensity at the sample surface exceeds 8 MW/cm 2 mutual position of the plasmon resonance and the laser wavelength weakly influences the phenomenon. The nano‐Si formation is studied with Raman scattering technique, and the average size of the silicon nanocrystals is evaluated.