Tribology studies of organic thin films by scanning force microscopy

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The use of organic thin films as lubricants on solid surfaces is important in many modern technologies including magnetic storage and micromachines. Langmuir-Blodgett (LB) films and self-assembled monolayers (SAMs) are attractive candidates for lubricant layers and for model studies of lubrication because of their strong adsorption to the surface. The recent interest on the properties of LB films and SAMs has been also motivated by their potential applications in sensors, non-linear optical devices, lithography and microelectronics. Using the micro-contact printing method the authors prepared patterned SAMs consisting of methyl-terminated alkanethiols of different chain lengths. The samples were characterized using lateral ... continued below

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7 p.

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Bar, G.; Rubin, S.; Parikh, A.N.; Swanson, B.I. & Zawodzinski, T.A. June 1, 1996.

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Description

The use of organic thin films as lubricants on solid surfaces is important in many modern technologies including magnetic storage and micromachines. Langmuir-Blodgett (LB) films and self-assembled monolayers (SAMs) are attractive candidates for lubricant layers and for model studies of lubrication because of their strong adsorption to the surface. The recent interest on the properties of LB films and SAMs has been also motivated by their potential applications in sensors, non-linear optical devices, lithography and microelectronics. Using the micro-contact printing method the authors prepared patterned SAMs consisting of methyl-terminated alkanethiols of different chain lengths. The samples were characterized using lateral force microscopy (LFM) and the force modulation technique (FMT). In general, higher friction is observed over the short chain regions than over the long chain regions when a low or moderate load is applied to the SFM tip. For such cases the high friction (short chain) regions are also ``softer`` as measured by FMT. A high loads, a reversal of the image contrast is observed and the short chain regions show a lower friction than the long chain regions. This image contrast is reversible upon reduction of the applied load.

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7 p.

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OSTI as DE96010931

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  • Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 8-12 Apr 1996

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  • Other: DE96010931
  • Report No.: LA-UR--96-1406
  • Report No.: CONF-960401--48
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/251357 | External Link
  • Office of Scientific & Technical Information Report Number: 251357
  • Archival Resource Key: ark:/67531/metadc673318

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  • June 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • June 24, 2016, 10:01 p.m.

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Bar, G.; Rubin, S.; Parikh, A.N.; Swanson, B.I. & Zawodzinski, T.A. Tribology studies of organic thin films by scanning force microscopy, report, June 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc673318/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.