electron microscopy

Thursday, August 17, 2017 - 2:00pm - 2:45pm
Andrew Maiden (University of Sheffield)
Relative to the rapid pace set in the X-ray and visible light regimes, developing electron ptychography into a useful, routine method for electrons has so far been a slow journey. The path has been hampered by hurdles such as inelastic and dynamical scattering, instrument instabilities and limited beam coherence, as well as by the sub-nanometer resolutions that electron microscopists expect. Today, however, the route is being cleared using advances from the X-ray and visible light regions of the spectrum, and momentum is beginning to build.
Friday, November 18, 2011 - 8:30am - 9:30am
Peter Doerschuk (Cornell University)
Single-particle cryo electron microscopy provides
images of biological macromolecular complexes with
spatial sampling on the order of 1-2 Angstrom.
Combining on the order of 100,000 such images can result
in 3-D reconstructions of the electron scattering
intensity of the complex with a spatial resolution as
fine as 4-5 Angstrom. Due to damage in the imaging
process, each complex is imaged only once and therefore
having a homogeneous ensemble of complexes is
important. Algorithms and results will be presented
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