Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Macroscopic electrical field distribution and field-induced surface stresses of needle-shaped field emitters

    Access Status
    Fulltext not available
    Authors
    Loo Chin Moy, Charles
    Ranzi, G.
    Petersen, T.
    Ringer, S.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Loo Chin Moy, C. and Ranzi, G. and Petersen, T. and Ringer, S. 2011. Macroscopic electrical field distribution and field-induced surface stresses of needle-shaped field emitters. Ultramicroscopy. 111 (6): pp. 397-404.
    Source Title
    Ultramicroscopy
    DOI
    10.1016/j.ultramic.2011.01.024
    ISSN
    0304-3991
    School
    Curtin Sarawak
    URI
    http://hdl.handle.net/20.500.11937/50501
    Collection
    • Curtin Research Publications
    Abstract

    One major concern since the development of the field ion microscope is the mechanical strength of the specimens. The macroscopic shape of the imaging tip greatly influences field-induced stresses and there is merit in further study of this phenomenon from a classical perspective. Understanding the geometrical, as opposed to localized electronic, factors that affect the stress might improve the quality and success rate of atom probe experiments. This study uses macroscopic electrostatic principles and finite element modelling to investigate field-induced stresses in relation to the shape of the tip. Three two-dimensional idealized models are considered, namely hyperbolic, parabolic and sphere-on-orthogonal-cone; the shapes of which are compared to experimental tips prepared by electro-polishing. Three dimensional morphologies of both a nano-porous and single-crystal aluminium tip are measured using electron tomography to quantitatively test the assumption of cylindrical symmetry for electro-polished tips. The porous tip was prepared and studied to demonstrate a fragile specimen for which such finite element studies could determine potential mechanical failure, prior to any exhaustive atom probe investigation.

    Related items

    Showing items related by title, author, creator and subject.

    • State and origin of the present-day stress field in sedimentary basins: New results from the World Stress Map Project.
      Tingay, Mark; Muller, B.; Reinecker, J.; Heidbach, O. (2006)
      The present-day stress field provides fundamental insight into the forces driving plate tectonics and intra-plate deformation. Furthermore, knowledge of the in situ state of stress is essential in petroleum and mining ...
    • State and origin of present-day stress fields in sedimentary basins
      Tingay, Mark (2009)
      The present-day stress field provides fundamental insight into the forces driving plate tectonics and intra-plate deformation. Furthermore, knowledge of the present-day stress field is essential in petroleum, geothermal ...
    • Test Design and Sample Preparation Procedure for Experimental Investigation of Hydraulic Fracturing Interaction Modes
      Sarmadivaleh, Mohammad; Rasouli, V. (2014)
      Hydraulic fracturing is a complex operation which is influenced by several factors including the formation properties, state of stresses in the field, injecting fluid and pumping rate. Before carrying out the expensive ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.