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- Bae, Sung Chul
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How confined lubricants diffuse during shear
- Author(s)
- Mukhopadhyay, A, Bae, Sung Chul, Zhao, J, Granick, Steve
- Issued Date
- 2004-12
- Citation
- PHYSICAL REVIEW LETTERS, v.93, no.23, pp.236105
- Abstract
- The translational diffusion of a fluorescent dye embedded at a dilute concentration in a confined fluid was compared at rest and during shear. The fluid, octamethylcyclotetrasiloxane (OMCTS), was confined between step-free muscovite mica to thickness 3-4 layers. Fluorescence correlation spectroscopy showed that the time scales of intensity-intensity autocorrelation functions were essentially the same during shear and at rest, except they were faster during shear by a factor of 2 to 5. This dynamical probe of how liquids order in molecularly thin films fails to support the hypothesis that shear produced a melting transition.
- Publisher
- AMERICAN PHYSICAL SOC
- ISSN
- 0031-9007
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