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
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Author: Glosli, J.N.Creator Type: Personal
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Author: Philpott, M.R.Creator Type: Personal
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Author: Belak, J.Creator Type: Personal
Contributor
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Sponsor: United States. Department of Energy.Contributor Type: OrganizationContributor Info: USDOE, Washington, DC (United States)
Publisher
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Name: Lawrence Livermore National LaboratoryPlace of Publication: CaliforniaAdditional 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
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Name: Office of Scientific & Technical Information Technical ReportsCode: OSTI
Institution
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Name: UNT Libraries Government Documents DepartmentCode: 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