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Quasi-elastic Laser Scattering QELS

Quasi-elastic Laser Scattering (QELS) provides a versatile tool for monitoring in situ the frequency of thermally induced capillary waves at the Uquid/hquid junction [26, 27]. Unlike the previous techniques based on an absorption/fluores-cence signal arising from molecular probes at the interface, QELS is not sensitive to specific molecules but to the interfacial tension of the molecular junc-... [Pg.139]

Time-resolved quasi-elastic laser scattering (QELS) experiments [306, 307] allow the measurement of the dispersion law (the relation between the frequency of capillary waves, co, and their wavelength, In/k). To derive the dispersion law theoretically, one must consider the dynamics of the two degrees of freedom - the position of the surface, z = (x, y, t), and the fluid velocity. In the limit of small viscosity, such a theory [291] gives... [Pg.119]

See other pages where Quasi-elastic Laser Scattering QELS is mentioned: [Pg.239]    [Pg.248]    [Pg.229]    [Pg.238]    [Pg.139]    [Pg.533]    [Pg.239]    [Pg.248]    [Pg.229]    [Pg.238]    [Pg.139]    [Pg.533]    [Pg.244]    [Pg.59]    [Pg.59]    [Pg.158]    [Pg.490]    [Pg.160]    [Pg.140]    [Pg.537]   


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Elastic scattering

Laser scattering

QELS

QELS = quasi-elastic scattering

Quasi-elastic

Quasi-elastic laser scattering

Quasi-elastic scattering

Scatter elastically

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