|
Statut |
Confirmé |
|
Série |
SEM-BESSON |
|
Domaines |
cond-mat |
|
Date |
Lundi 16 Juin 2008 |
|
Heure |
10:30 |
|
Institut |
IMPMC |
|
Salle |
Salle de conférence, Bâtiment 15, 140 rue de Lourmel, 75015 Paris |
|
Nom de l'orateur |
Torre |
|
Prenom de l'orateur |
Renato |
|
Addresse email de l'orateur |
torre [at] lens [dot] unifi [dot] it |
|
Institution de l'orateur |
LENS and Dip. di Fisica , Università di Firenze, Italy |
|
Titre |
Time-resolved non-linear spectroscopy in complex liquids: the water case |
|
Résumé |
The interpretation and understanding of liquid proprieties remains a challenge in materials science. In particular when the intermolecular potential is characterized by specific features, as anisotropic and/or long range interactions, the liquid state shows local dynamic aggregation and structuring phenomena. This is the distinguishing characteristic of complex liquids. Typical examples are the hydrogen-bonded liquids, glass-formers, polymers or liquid-crystals.
During the last years, researchers have undertaken a steady effort in order to improve the knowledge of liquid matter, both from experimental and theoretical points of view. New spectroscopic techniques, based on non-linear optical phenomena, have been realized and applied to the study of complex liquids.
In this talk, I will introduce a couple of state-of-art experimental studies based on non-linear optical spectroscopy in the time-domain on liquid water. The first is an optical Kerr effect investigation of relaxation and vibration dynamics of bulk water in its supercooled phase. The second is the study of acoustic propagation and thermal diffusion in the supercooled water by transient grating spectroscopy.
Very recently, we started a new research on the water dynamic confined in silica nano-pores. I would like to show you some new results on it.
|
|
Numéro de preprint arXiv |
|
|
Commentaires |
|
|
Fichiers attachés |
|
