Signatures of the slow β-relaxation of D-sorbitol as observed by macroscopic dielectric relaxation and solvation dynamics over a wide range of temperatures are compared. The latter technique senses the local dielectric relaxation in the immediate vicinity of a chromophore, which is present only at very low concentrations. The conformity of locally sensitized and macroscopically averaged results for the glassy state indicates that the secondary relaxation is a spatially uniform feature. If the β-process were spatially confined it should not be detectable by solvation probes.
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of Non-Crystalline Solids|
|Publication status||Published - Dec 1 1998|
ASJC Scopus subject areas
- Ceramics and Composites
- Electronic, Optical and Magnetic Materials