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SUMMARY:3D Nanoscale Imaging using Electron Tomography - Professor Paul Mi
 dgley (Materials Science and Metallurgy\, Cambridge)
DTSTART:20081110T160000Z
DTEND:20081110T170000Z
UID:TALK14289@talks.cam.ac.uk
CONTACT:11283
DESCRIPTION:Electron tomography has become an established tool for 3D visu
 alization and characterisation not only in the life sciences but also now 
 in the physical sciences\, and especially in the study of complex nanoscal
 e materials and structures. There is a need not only to study the morpholo
 gy of a structure but also its physical and chemical properties in three d
 imensions. As such\, electron tomography in materials science has develope
 d very quickly over the past few years using a wide range of imaging modes
  to capture this 3D information. These modes include STEM HAADF imaging fo
 r 3D visualization of morphology\, particle distribution and porosity\, th
 rough to weak-beam and STEM dark-field imaging to study 3D dislocation net
 works\, 4D plasmon imaging to discern different chemical species and elect
 ron holo-tomography to understand the 3D electrostatic potential distribut
 ion in semiconductor devices. In this talk\, I will highlight a number of 
 examples from across a broad range of materials that illustrates how elect
 ron tomography can provide high resolution 3D information that would be di
 fficult if not impossible to determine with any other technique.\n\nRefere
 nces\nArslan I.\, Yates T.J.V.\, Browning N.D. and Midgley PA (2005) ‘Em
 bedded Nanostructures revealed in Three Dimensions’ Science 309 2195-219
 8.\n\nBarnard J. S.\, Sharp J.\, Tong J. R. and Midgley P. A. (2006) ‘Hi
 gh-Resolution Three-Dimensional Imaging of Dislocations’\, Science\, 313
 \, 319\n\nGass M.H.\, Koziol K. K.\, Windle A.H. and Midgley P.A.\, (2006)
  ‘Four-Dimensional Spectral Tomography of Carbonaceous Nanocomposites’
  Nano Letters  6 (3) 376-379\n\nMidgley P.A. and Weyland M. (2003)\, ‘3D
  Electron Microscopy in the Physical Sciences: the Development of Z-contra
 st and EFTEM Tomography’\, Ultramicroscopy 96 413\n\nTwitchett-Harrison 
 AC\, Yates TJV\, Newcomb SB\, Dunin-Borkowski RE and Midgley PA. (2007) 
 ‘High-resolution three-dimensional mapping of semiconductor dopant poten
 tials’ Nano Letters 7 (7): 2020-2023\n\nWard EPW\, Yates TJV\, Fernandez
  JJ\, Vaughan DEW and Midgley PA (2007) ‘Three-Dimensional Nanoparticle 
 Distribution and Local Curvature of Heterogeneous Catalysts Revealed by El
 ectron Tomography’ J Phys Chem C 111\, 11501-11505\n\n
LOCATION:Harker 2 lecture room\, Department of Earth Sciences\, Downing Si
 te
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