SERS-Active Pattern in Silver-Ion-Exchanged Glass Drawn by Infrared Nanosecond Laser

Ekaterina Babich; Vladimir Kaasik; Alexey Redkov; Thomas Maurer; Andrey Lipovskii

doi:10.3390/nano10091849

SERS-Active Pattern in Silver-Ion-Exchanged Glass Drawn by Infrared Nanosecond Laser

Nanomaterials (Basel). 2020 Sep 16;10(9):1849. doi: 10.3390/nano10091849.

Authors

Ekaterina Babich^{1

2}, Vladimir Kaasik^{1

2}, Alexey Redkov³, Thomas Maurer⁴, Andrey Lipovskii^{1

2}

Affiliations

¹ Institute of physics, nanotechnology and telecommunications, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia.
² Sector of optics of heterogeneous nanostructures and optical materials, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia.
³ Laboratory of structural and phase transformations in condensed media, Institute of Problems of Mechanical Engineering RAS, Bolshoy pr. V. O. 61, 199178 St. Petersburg, Russia.
⁴ Light, Nanomaterials, Nanotechnologies (L2n), Université de Technologie de Troyes & CNRS ERL 7004, rue Marie Curie 12, CS 42060, 10004 Troyes CEDEX, France.

Abstract

The irradiation of silver-to-sodium ion-exchanged glass with 1.06-μm nanosecond laser pulses of mJ-range energy results in the formation of silver nanoparticles under the glass surface. Following chemical removal of ~25-nm glass layer reveals a pattern of nanoparticles capable of surface enhancement of Raman scattering (SERS). The pattern formed when laser pulses are more than half-overlapped provides up to ~10⁵ enhancement and uniform SERS signal distribution, while the decrease of the pulse overlap results in an order of magnitude higher but less uniform enhancement.

Keywords: SERS; glass; ion-exchange; nanosecond laser; silver nanoparticles.

Abstract

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