Nuclear relaxation of liquids in confinements.
We study theoretically the effects of geometrical confinement on the dipolar relaxation of a non-interacting liquid in porous media. Application to the 1H relaxation of methylcyclohexane liquid in porous silica glasses is given. The case of an interacting liquid is considered by molecular dynamics simulations. Geometrical confinement and surface interaction lead to similar frequency behaviour of relaxation rates according to the layering of local density and anisotropy of the molecular mobility.
Korb
J P
JP
Laboratoire de Physique de la Matière Condensée, Ecole Polytechnique, CNRS, Palaiseau, France.
Delville
A
A
Xu
S
S
Jonas
J
J
D005139:Eyeglasses; D009682:Magnetic Resonance Spectroscopy; D016062:Porosity; D012822:Silicon Dioxide; D012996:Solutions
D012996:Solutions; D012822:Silicon Dioxide