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SUMMARY:Extrapolating from 50 years of dislocation imaging: Reaching into 
 the core - Prof. A. Howie\, SMF Group\, Cavendish Laboratory
DTSTART:20070524T150000Z
DTEND:20070524T160000Z
UID:TALK7114@talks.cam.ac.uk
CONTACT:Stephen Walley
DESCRIPTION:The earliest TEM observations of dislocations fifty years ago 
 established the diffraction contrast imaging and structure imaging techniq
 ues still used today after many improvements. Menter’s structure imaging
  method now routinely offers Angstrom-scale resolution of dislocations ali
 gned with the viewing axis. Many impressive results have followed but ther
 e are grounds to suspect that current structure imaging is insensitive to 
 deviations from this idealised 2-d situation such as the presence of kinks
  on the dislocation line. Some suggestions will be made to address this pr
 oblem.
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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