For the first time, stimulated Brillouin scattering (SBS) spectra have been measured for a suspension of dielectric nanoparticles in water. We observed anomalous dependence of SBS spectra on the concentration of polystyrene nanospheres (74 nm diameter). The nonlinear five-fold increase in the SBS threshold was determined for the nanosphere concentration range of 10 9 to 10 15 cm −3 .
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Bunkin et al. (2018) studied this question.
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