In this paper, we investigate the effect of lube textures from the viewpoint of lubricant spreading. Lube textures, designating a patterned distribution of bonding strength between lubricant molecules and disk surface, were formed by irradiating ultraviolet rays through a stripe-patterned mask onto a magnetic disk surface which was partially coated with one-monolayer film of perfluoropolyether. Surface characteristics of the lube textures were evaluated by surface energies ascertained from contact angle measurements. Spreading of the lubricant film was measured by scanning microellipsometry on the striped lube textures in the directions parallel and perpendicular to the stripes. The thickness-dependent diffusion coefficients extracted from the spreading profiles show that lubricant spreading in the regime of film thickness less than 0.2 nm is faster along the stripes, indicating the possibility of controlling the behavior of lubricant films with lube textures.
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e-mail: zhang@is.nagoya-u.ac.jp
e-mail: mitsuya@nuem.nagoya-u.ac.jp
e-mail: n_fukuoka@nuem.nagoya-u.ac.jp
e-mail: fukuzawa@nuem.nagoya-u.ac.jp
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January 2005
Technical Papers
Spreading Characteristics of Monolayer Lubricant Films on Surfaces With Lube Textures
Hedong Zhang,
e-mail: zhang@is.nagoya-u.ac.jp
Hedong Zhang
Department of Complex Systems Science, Graduate School of Information Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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Yasunaga Mitsuya,
e-mail: mitsuya@nuem.nagoya-u.ac.jp
Yasunaga Mitsuya
Department of Micro-Nano Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Natsuko Fukuoka,
e-mail: n_fukuoka@nuem.nagoya-u.ac.jp
Natsuko Fukuoka
Department of Electronic-Mechanical Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Kenji Fukuzawa
e-mail: fukuzawa@nuem.nagoya-u.ac.jp
Kenji Fukuzawa
Department of Micro-Nano Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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Hedong Zhang
Department of Complex Systems Science, Graduate School of Information Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
e-mail: zhang@is.nagoya-u.ac.jp
Yasunaga Mitsuya
Department of Micro-Nano Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
e-mail: mitsuya@nuem.nagoya-u.ac.jp
Natsuko Fukuoka
Department of Electronic-Mechanical Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
e-mail: n_fukuoka@nuem.nagoya-u.ac.jp
Kenji Fukuzawa
Department of Micro-Nano Systems Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
e-mail: fukuzawa@nuem.nagoya-u.ac.jp
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division March 17, 2004; revised manuscript received August 15, 2004. Review conducted by: T. Kato.
J. Tribol. Jan 2005, 127(1): 164-170 (7 pages)
Published Online: February 7, 2005
Article history
Received:
March 17, 2004
Revised:
August 15, 2004
Online:
February 7, 2005
Citation
Zhang, H., Mitsuya, Y., Fukuoka, N., and Fukuzawa, K. (February 7, 2005). "Spreading Characteristics of Monolayer Lubricant Films on Surfaces With Lube Textures ." ASME. J. Tribol. January 2005; 127(1): 164–170. https://doi.org/10.1115/1.1843828
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