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

T. S. Sriram*, K. J. Wahl, Yip-Wah Chung, B. Bhushan, W. Rothschild

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

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 languageEnglish (US)
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - Dec 1 1990
EventJoint ASME/STLE Tribology Conference - Toronto, Ont, Can
Duration: Oct 7 1990Oct 10 1990

ASJC Scopus subject areas

  • Mechanical Engineering

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