Author/Authors :
Fioretto، نويسنده , , D. and Comez، نويسنده , , L. and Gallina، نويسنده , , M.E. and Morresi، نويسنده , , Ateka A. and Palmieri، نويسنده , , L. and Paolantoni، نويسنده , , M. and Sassi، نويسنده , , P. and Scarponi، نويسنده , , F.، نويسنده ,
Abstract :
We report depolarized light scattering measurements of water–glucose solutions in a wide spectral range from 0.01 to 1000 cm−1, performed by the combined use of a double monocromator and a multipass Fabry–Perot interferometer. For the first time evidence is given of a low frequency relaxation process related to the glucose dynamics well separated from that of water. This low frequency process has a different origin with respect to the broad relaxation feature detected by dielectric spectroscopy and is interpreted in terms of Stokes–Einstein–Debye rotational diffusion of single glucose molecules.
