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Author

Bae, Sung Chul
Multiscale Optical Imaging Lab
Research Interests
  • Multiscale optical imaging, laser spectroscopy, laser microscopy, laser sensing, soft matter physics, surface and interfacial science, laser Matter Interaction

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Using light to study boundary lubrication: spectroscopic study of confined fluids

Cited 11 times inthomson ciCited 11 times inthomson ci
Title
Using light to study boundary lubrication: spectroscopic study of confined fluids
Author
Bae, Sung ChulWong, Janet S.Kim, MinsuJiang, ShanHong, LiangGranick, Steve
Keywords
Confined fluid; Confocal; Fluorescence; Raman; Spectroscopy
Issue Date
200804
Publisher
ROYAL SOC
Citation
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, v.366, no.1869, pp.1443 - 1454
Abstract
Several instrumental developments to examine the spectroscopic response of molecularly thin fluids confined between mica sheets are described. They are predicated on using a redesigned surface forces apparatus where dielectric coatings, transparent to light at needed optical wavelengths, retain the ability to measure interferometric thickness at other optical wavelengths. Examples of recent measurements are presented using confocal laser Raman spectroscopy to evaluate how molecules orient as well as to perform chemical imaging. Other examples are presented using confocal fluorescence recovery after photobleaching to evaluate translational diffusion of confined polymer melts. The advantage of separating the mechanical average (force and friction) from direct information about structure and mobility at the molecular level is stressed.
URI
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DOI
http://dx.doi.org/10.1098/rsta.2007.2167
ISSN
1364-503X
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