title: Advances in atomic resolution in situ environmental transmission electron microscopy and 1A aberration corrected in situ electron microscopy.
abstract: Advances in atomic resolution in situ environmental transmission electron microscopy for direct probing of gas-solid reactions, including at very high temperatures (approximately 2000 degrees C) are described. In addition, recent developments of dynamic real time in situ studies at the Angstrom level using a hot stage in an aberration corrected environment are presented. In situ data from Pt/Pd nanoparticles on carbon with the corresponding FFT/optical diffractogram illustrate an achieved resolution of 0.11 nm at 500 degrees C and higher in a double aberration corrected TEM/STEM instrument employing a wider gap objective pole piece. The new results open up opportunities for dynamic studies of materials in an aberration corrected environment.
authors.affiliation: Department of Chemistry, University of York, Nanocentre, York YO10 5DD, United Kingdom. pgb500@york.ac.uk
authors.forename: Pratibha L
authors.initials: PL
authors.lastname: Gai
authors.forename: Edward D
authors.initials: ED
authors.lastname: Boyes
mesh_terms: D002244:Carbon / Q000737:chemistry; D008855:Microscopy, Electron, Scanning / Q000295:instrumentation*; D046529:Microscopy, Electron, Transmission / Q000295:instrumentation*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D044367:Phase Transition; D013696:Temperature; D017973:Tungsten Compounds / Q000737:chemistry
chemical_list: D017973:Tungsten Compounds; C002802:tungsten carbide; D002244:Carbon