Macro- To nanoscale wear prevention via molecular adsorption

David B. Asay, Michael T. Dugger, James A. Ohlhausen, Seong Kim

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

As the size of mechanical systems shrinks from macro- to nanoscales, surface phenomena such as adhesion, friction, and wear become increasingly significant. This paper demonstrates the use of alcohol adsorption as a means of continuously replenishing the lubricating layer on the working device surfaces and elucidates the tribochemical reaction products formed in the sliding contact region. Friction and wear of native silicon oxide were studied over a wide range of length scales from macro- to nanoscales using a ball-on-flat tribometer (millimeter scale), sidewall microelectromechanical system (MEMS) tribometer (micrometer scale), and atomic force microscopy (nanometer scale). In all cases, the alcohol vapor adsorption successfully lubricated and prevented wear. Imaging time-of-flight secondary ion mass spectrometry analysis of the sliding contact region revealed that high molecular weight oligomeric species were formed via tribochemical reactions of the adsorbed linear alcohol molecules. These tribochemical products seemed to enhance the lubrication and wear prevention. In the case of sidewall MEMS tests, the lifetime of the MEMS device was radically increased via vapor-phase lubrication with alcohol.

Original languageEnglish (US)
Pages (from-to)155-159
Number of pages5
JournalLangmuir
Volume24
Issue number1
DOIs
StatePublished - Jan 1 2008

Fingerprint

Macros
alcohols
Alcohols
Wear of materials
microelectromechanical systems
MEMS
Adsorption
sliding contact
tribometers
adsorption
vapor phase lubrication
Lubrication
friction
Vapors
Friction
Surface phenomena
Silicon oxides
lubrication
Secondary ion mass spectrometry
silicon oxides

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Asay, David B. ; Dugger, Michael T. ; Ohlhausen, James A. ; Kim, Seong. / Macro- To nanoscale wear prevention via molecular adsorption. In: Langmuir. 2008 ; Vol. 24, No. 1. pp. 155-159.
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Asay, DB, Dugger, MT, Ohlhausen, JA & Kim, S 2008, 'Macro- To nanoscale wear prevention via molecular adsorption', Langmuir, vol. 24, no. 1, pp. 155-159. https://doi.org/10.1021/la702598g

Macro- To nanoscale wear prevention via molecular adsorption. / Asay, David B.; Dugger, Michael T.; Ohlhausen, James A.; Kim, Seong.

In: Langmuir, Vol. 24, No. 1, 01.01.2008, p. 155-159.

Research output: Contribution to journalArticle

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