The application of scanning tunneling microscopy to study lubricant distribution of magnetic thin film rigid disk surfaces

T. S. Sriram; K. J. Wahl; Y. W. Chung; B. Bhushan

doi:10.1115/1.2920612

The application of scanning tunneling microscopy to study lubricant distribution of magnetic thin film rigid disk surfaces

T. S. Sriram, K. J. Wahl, Y. W. Chung, B. Bhushan

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A special imaging mode of the scanning tunneling microscope (STM) based on charge trapping was used to probe the uniformity of lubricant distribution on magnetic thin film rigid disks at resolutions of better than 35 nm. Electron beam deposited STM tips were used to achieve this resolution. Coupons from untested rigid disks and those subjected to wear in dry helium and humid air were examined. We also examined coupons of an untested disk on which a scratch mark was made with a ferrite pin. It was found that the lubricant layer was nonuniform in the scratched region.

Original language	English (US)
Pages (from-to)	245-248
Number of pages	4
Journal	Journal of Tribology
Volume	113
Issue number	2
DOIs	https://doi.org/10.1115/1.2920612
State	Published - Apr 1991

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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AU - Bhushan, B.

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AB - A special imaging mode of the scanning tunneling microscope (STM) based on charge trapping was used to probe the uniformity of lubricant distribution on magnetic thin film rigid disks at resolutions of better than 35 nm. Electron beam deposited STM tips were used to achieve this resolution. Coupons from untested rigid disks and those subjected to wear in dry helium and humid air were examined. We also examined coupons of an untested disk on which a scratch mark was made with a ferrite pin. It was found that the lubricant layer was nonuniform in the scratched region.

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The application of scanning tunneling microscopy to study lubricant distribution of magnetic thin film rigid disk surfaces

Abstract

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