INFLUENCE OF THERMAL ACTIVATION ON THE ENHANCMENT OF RAMAN SCATTERING SPECTRA OF DIELECRIC MICROSPHERES IN A METALLIC SHELL
https://doi.org/10.56304/S2079562926010422
EDN: RABCQI
Abstract
In this study, the enhancement of Raman scattering spectra (RS) of individual dielectric (polystyrene) microspheres, coated with a thin (10 nm) metallic shell, deposited on silver-coated cover glasses, was investigated. It was found that laser irradiation with a power of 10–20 μW induces thermal activation, which leads to a sharp increase in the intensity of RS spectra, as well as their modification. This effect is irreversible, indicating structural changes in the metallic shell. After thermal activation, it becomes possible to record spectra at significantly lower excitation powers, which substantially enhances the sensitivity of the method.
About the Authors
M. S. Shestopalova
Shemyakin–Ovchinnikov Institute of Bioorganic chemistry, Russian Academy of Sciences;
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
A. K. Sarychev
Institute of Theoretical and Applied Electrodynamics, Russian Academy of Sciences
Russian Federation
Russian Federation
A. V. Ivanov
Institute of Theoretical and Applied Electrodynamics, Russian Academy of Sciences
Russian Federation
Russian Federation
I. V. Bykov
Institute of Theoretical and Applied Electrodynamics, Russian Academy of Sciences
Russian Federation
Russian Federation
V. A. Oleinikov
Shemyakin–Ovchinnikov Institute of Bioorganic chemistry, Russian Academy of Sciences;
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
K. E. Mochalov
Shemyakin–Ovchinnikov Institute of Bioorganic chemistry, Russian Academy of Sciences
Russian Federation
Russian Federation
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Review
For citations:
Shestopalova M.S., Sarychev A.K., Ivanov A.V., Bykov I.V., Oleinikov V.A., Mochalov K.E. INFLUENCE OF THERMAL ACTIVATION ON THE ENHANCMENT OF RAMAN SCATTERING SPECTRA OF DIELECRIC MICROSPHERES IN A METALLIC SHELL. Nuclear Physics and Engineering. 2026;17(3):521-525. (In Russ.) https://doi.org/10.56304/S2079562926010422. EDN: RABCQI
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