Details

Autor(en) / Beteiligte

• Bove, L E
• Dreyfus, C
• Torre, R
• Pick, R M

Titel

Observation of nanophase segregation in LiCl aqueous solutions from transient grating experiments

Ist Teil von

• The Journal of chemical physics, 2013-07, Vol.139 (4), p.044501-044501

Ort / Verlag

United States: American Institute of Physics

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Transient grating experiments performed on supercooled LiCl, RH2O solutions with R > 6 reveal the existence of well resolved, short time, extra signal which superposes to the normal signal observed for the R = 6 solution and for homogenous glass forming systems. This extra signal shows up below 190 K, its shape and the associated timescale depend only on temperature, while its intensity increases with R. We show that the origin of this signal is a phase separation between clusters with a low solute concentration and the remaining, more concentrated, solution. Our analysis demonstrates that these clusters have a nanometer size and a composition which are rather temperature independent, while increasing R simply increases the density of these clusters.