Journal of Materials Science

, Volume 18, Issue 7, pp 1999–2010 | Cite as

Imaging of polyethylene films by diffraction contrast

  • V. P. Chacko
  • W. W. Adams
  • E. L. Thomas


The technique of crystalline diffraction contrast imaging of lamellae in spherulitic and oriented thin films of polyethylene is illustrated for both conventional transmission and scanning transmission electron microscopY. Bright-field “ghost” imaging permits real space crystallography of the specimen and reveals the occurrence of variable chain inclination in a given lamellar preparation. N beam annular dark-field scanning transmission microscopy is useful for distinguishing between curved lamellae and mosaic blocks as well as for the direct imaging of the amorphous regions between lamellae.


Ghost Real Space Amorphous Region Scanning Transmission Electron microscopY Direct Imaging 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Chapman and Hall Ltd. 1983

Authors and Affiliations

  • V. P. Chacko
    • 1
  • W. W. Adams
    • 1
  • E. L. Thomas
    • 1
  1. 1.Polymer Science and Engineering DepartmentUniversity of MassachusettsAmherstUSA

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