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IJPAP Vol.44(10) [October 2006] >

Title: Molecular diffusion and confinement effect: Neutron scattering study
Authors: Mukhopadhyay, R
Mitra, S
Keywords: Molecular diffusion
Neutron scattering
Quasi-elastic neutron scattering
Issue Date: Oct-2006
Publisher: CSIR
IPC CodeG21K1/00, G01N21/47
Abstract: Confined fluids generally have properties different from those of adsorbed layer or bulk phases. Diffusion, translational or rotational, is altered significantly on confinement. The molecular dynamics and its effect due to confinement in various environments as studied by Quasi-elastic Neutron Scattering (QENS) technique have been reported. QENS offers a unique possibility of analyzing spatial dimensions of atomic or molecular processes in their development over time. It is found that dynamics of a fluid confined in porous medium depending on the nature of the medium and interaction, can have a variety of modifications. The diffusivity of guest molecules embedded in zeolite or molecular sieves depends very much on the combination of the guest and host structures, shape and specific interactions.
Page(s): 732-740
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.44(10) [October 2006]

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