Sound propagation and relaxation processes in the isotropic phase of cholesteryl miristate

Dispersion of the sound speed in water-organic solutions

“…It is necessary to mention the previous works [3][4][5][6], in which it has been shown that stable liquid molecular complexes with sizes of 100− 200 nm spontaneously arise in aqueous solutions of polar organics, the density of which differs from the density of the surrounding liquid. It has been shown in [7][8][9][10][11][12] that anomalous light scattering is associated with the formation of a nanodroplet phase in waterorganic mixtures.…”

“…The refractive index of γ-picoline at a wavelength of λ = 589.3 nm is 1.5, so it should be expected that in the concentration range for which an anomalous light scattering peak is recorded, a nanodroplet phase enriched in γ-picoline can be observed, and the phase contrast, in this case, will be high enough to study these nanodroplets with a phase microscope, [7][8][9][10]; we are currently experimenting with. In addition, in [12][13][14][15] + is due to an increase in the isothermal compressibility β Т with an increase in the water content. This, in turn, may be due to the appearance of stable supramolecular structures (nuclei of the nanodroplet phase) with a decrease in the concentration of γ-picoline; this phase, in accordance with the model presented in [7][8][9][10], causes anomalous scattering in an aqueous solution of γ-picoline at its concentration of 0.06 ppm in solution; henceforth, we will call this concentration the critical concentration.…”