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TECHNICAL PAPERS

Two-Dimensional Measurements of Lubricant Spreading on Diamond-Like-Carbon Surface Using Image Processing on Fringe Patterns Formed by Michelson Interferometry

[+] Author and Article Information
Yasunaga Mitsuya, Hedong Zhang, Sakiko Ishida

Nagoya University, Department of Electronic-Mechanical Engineering, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

J. Tribol 123(1), 188-195 (Jul 25, 2000) (8 pages) doi:10.1115/1.1327582 History: Received March 23, 2000; Revised July 25, 2000
Copyright © 2001 by ASME
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References

Yanagisawa, M., 1990, “Surface Migration and Lubrication Characteristics of Liquid Lubricants on Magnetic Thin Film Disks,” STLE SP-29, Tribology & Mechanics of Magnetic Storage Systems, Vol. VII, pp. 101–106.
Novotony,  V. J., and Baldwinson,  M. A., 1991, “Lubricant Dynamics in Sliding and Flying,” J. Appl. Phys., 10, No. 10, pp. 5647–5652.
Ishii,  M., and Kawakubo,  Y., 1997, “Simultaneous Measurement of Pin Wear and Change in Lubricant Thickness on Thin-Film Magnetic Disks,” IEEE Trans. Magn., 33, No. 6, pp. 4560–4565.
Tyndall,  G. W., Karis,  T. E., and Jhon,  M. S., 1999, “Spreading Profiles of Molecularly Thin Perfluoropolyether Films,” Tribol. Trans., 42, No. 3, pp. 463–470.
Karis,  T. E., and Tyndall,  G. W., 1999, “Calculation of Spreading Profiles for Molecularly-Thin Films from Surface Energy Gradients,” J. Non-Newtonian Fluid Mech., 82, Nos. 2–3, pp. 287–302.
Ma,  X., Jhon,  M. S., Brauer,  C. L., Gui,  J., and Marchon,  B., 1999, “Monte Carlo Simulation of Liquid Spreading on a Solid Surface,” Phys. Rev. E, 60, No. 5, pp. 5795–5801.
Min,  B. G., Choi,  J. W., Brown,  H. R., Yoon,  D. Y., O’Conner,  T. M., and Jhon,  M. S., 1995, “Spreading Characteristics of Thin Liquid Films of Perfluoropolyalkylethers on Solid Surfaces. Effects of Chain-End Functionality and Humidity,” Tribol. Lett., 1, pp. 225–232.
Meeks,  S. W., 2000, “A Combined Ellipsometer, Reflectometer, Scatterometer and Kerr Effect Microscope for Thin Film Disk Characterization,” Proc. SPIE, 3966, pp. 385–392.
Klein,  D. L., and Verens,  G. H., 1999, “Measurements of Thin Film Disks by Surface Reflectance Analysis,” Proc. SPIE, 3619, pp. 18–26.
Mitusya, Y., Mitsui, A., Kawabe, Y., and Lunde, L., 1996, “Three-Dimensional Measurement of Head Flying Height and Attitude Using Image Processing of Fringe Patterns Formed by Michelson Laser Interferometry,” Trans. ASME, 118 , No. 3, pp. 564–570.
Mitsuya,  Y., Chihara,  K., and Yoshioka,  M., 1999, “Novel Measurements of Flying Height and Attitudes Using Michelson Laser Interferometry,” IEEE Trans. Magn., 35, No. 5, pp. 2338–2340.
Toney,  M. F., and Mate,  C. M., 1998, “Calibrating ESCA and Ellipsometry Measurements of Perfluoropolyether Lubricant Thickness,” IEEE Trans. Magn., 34, No. 4, pp. 1774–1776.
Ma,  X., Gui,  J., Smoliar,  L., Grannen,  K., Marchon,  B., Jhon,  M. S., and Brauer,  C. L., 1999, “Spreading of Perfluoropolyalkylether Films on Amorphous Carbon Surfaces,” J. Chem. Phys., 110, No. 6, pp. 3129–3137.

Figures

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Methodology of measurement
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Example of fringes formed over the boundary between lubricant and disk
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Effects of fringe following technique: (a) fringes obtained without fringe following technique; (b) fringes obtained with fringe following technique.
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Error-map and noise suppression effects: (a) error-map; (b) noise suppression utilizing error-map.
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Front-surface reflection
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Relationship between actual and observed thicknesses
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Spreading profiles of PFPE Zdol
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Back-surface reflection
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Reduction in sensitivity for back surface reflection
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Comparison between front and back-surface reflections: (a) front-surface reflection; (b) back-surface reflection.
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Spreading profiles of PFPE Zdol

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