A stimulated low-frequency Raman scattering signal with frequencies of about 31.17 and 43.5 GHz caused by the presence of natural vibrational frequencies of the studied tobacco mosaic virus particles is detected in a suspension of the tobacco mosaic virus at the suspension particle concentrations of about 1012 and 2.0 × 1012 cm–3. A change in the suspension temperature at a given concentration of virus particles leads to a significant change in the observed stimulated low-frequency Raman scattering spectrum. The detected coherent signal of the first Stokes component with a frequency shift of about 43.5 GHz is in good agreement with our estimates of the natural vibrational frequencies of cylindrical nanoparticles in a liquid medium.
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This work was supported by the Ministry of Science and Higher Education of the Russian Federation (subsidy identifier 075-15-2020-912 for the organization and development of world-class research centers).
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Bunkin, A.F., Davydov, M.A., Fedorov, A.N. et al. Mode Switching of the Natural Low-Frequency Oscillations of the Tobacco Mosaic Virus when the Temperature of Its Aqueous Suspension Changes. Jetp Lett. 113, 733–737 (2021). https://doi.org/10.1134/S0021364021110047
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DOI: https://doi.org/10.1134/S0021364021110047