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RESEARCH PAPERS

Measurement of Adhesion Force and Elongation of Molecularly Thin Lubricant by Using Transient Response of SPM Cantilever

[+] Author and Article Information
Yasuji Ohshima

Aichi Konan College, Liberal Arts Department, 172, Omatsubara, Takaya-cho, Konan 483-8086, Japan

Yasunaga Mitsuya

Nagoya University, Department of Micro System Engineering, Furo-cho Chikusa-ku Nagoya 464-8603, Japan

Yusuke Iwase

Matsushita Electric Industrial Co., Ltd., Lighting Company, Production System Development Group, 1-1 Saiwai-cho, Takatsuki, Osaka 569-1143, Japan

J. Tribol 126(4), 738-744 (Nov 09, 2004) (7 pages) doi:10.1115/1.1759340 History: Received March 21, 2003; Revised January 14, 2004; Online November 09, 2004
Copyright © 2004 by ASME
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References

Figures

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Schematic diagram of experimental apparatus
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Fringe pattern on cantilever surface
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Comparison between cantilever and silicon plate surfaces: (a) cantilever surface; and (b) silicon plate surface.
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Comparison of fringe patterns between cantilever and silicon plate surfaces: (a) cantilever surface; and (b) silicon plate surface.
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Image processing for fringes on silicon plate surface: (a) original image; (b) after background noise elimination; (c) after median filtering; and (d) peak detection.
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Peak detection using least squares method
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Travel of probe and inclination of cantilever
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Comparisons of travel and inclination curves: (a) cantilever surface and SLSM; and (b) silicon plate surface and LSM.
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Separation models: (a) instantaneous separation; and (b) Finite-time separation accompanying lubricant bridging.
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Typical discrepancy between experiment and regression
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Comparison of force profiles during separation: (a) step; (b) non-linear; and (c) linear.
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Calculated result and identification procedure
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Relationship between lubricant elongation and elapsed time to first peak
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Relationship between lubricant elongation and height of first peak
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Comparisons between experiments and simulations: (a) νp=61 μm/s; (b) νp=118 μm/s; and (c) νp=232 μm/s.
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Relationship between retracting velocity and contact force
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Relationship between retracting velocity and lubricant elongation

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