Molecular dynamics simulation of mechanical deformation of ultra-thin amorphous carbon films Metadata

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Title

  • Main Title Molecular dynamics simulation of mechanical deformation of ultra-thin amorphous carbon films

Creator

  • Author: Glosli, J.N.
    Creator Type: Personal
  • Author: Philpott, M.R.
    Creator Type: Personal
  • Author: Belak, J.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: California
    Additional Info: Lawrence Livermore National Lab., CA (United States)

Date

  • Creation: 1995-04-01

Language

  • English

Description

  • Content Description: Amorphous carbon films approximately 20nm thick are used throughout the computer industry as protective coatings on magnetic storage disks. The structure and function of this family of materials at the atomic level is poorly understood. Recently. we simulated the growth of a:C and a:CH films 1 to 5 nm thick using Brenner`s bond-order potential model with added torsional energy terms. The microstructure shows a propensity towards graphitic structures at low deposition energy (<leV) and towards higher density and diamond-like structures at higher deposition energy (>20eV). In this paper we present simulations of the evolution of this microstructure for the dense 20eV films during a simulated indentation by a hard diamond tip. We also simulate sliding, the tip across the surface to study dynamical processes like friction, energy transport and microstructure evolution during sliding.
  • Physical Description: 7 p.

Subject

  • STI Subject Categories: 36 Materials Science
  • Keyword: Amorphous State
  • Keyword: Density
  • Keyword: Computerized Simulation
  • Keyword: Magnetic Disks
  • STI Subject Categories: 99 Mathematics, Computers, Information Science, Management, Law, Miscellaneous
  • Keyword: Deposition
  • Keyword: Microstructure
  • Keyword: Protective Coatings
  • Keyword: Carbon

Source

  • Conference: Spring meeting of the Materials Research Society (MRS), San Francisco, CA (United States), 17-21 Apr 1995

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE95016591
  • Report No.: UCRL-JC--119515
  • Report No.: CONF-950412--37
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 102465
  • Archival Resource Key: ark:/67531/metadc618958

Note

  • Display Note: OSTI as DE95016591
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