title: Quantitative high-resolution transmission electron microscopy of single atoms.
abstract: Single atoms can be considered as the most basic objects for electron microscopy to test the microscope performance and basic concepts for modeling image contrast. In this work high-resolution transmission electron microscopy was applied to image single platinum, molybdenum, and titanium atoms in an aberration-corrected transmission electron microscope. The atoms are deposited on a self-assembled monolayer substrate that induces only negligible contrast. Single-atom contrast simulations were performed on the basis of Weickenmeier-Kohl and Doyle-Turner form factors. Experimental and simulated image intensities are in quantitative agreement on an absolute intensity scale, which is provided by the vacuum image intensity. This demonstrates that direct testing of basic properties such as form factors becomes feasible.
authors.affiliation: Laboratorium für Elektronenmikroskopie, Karlsruher Institut für Technologie, 76128 Karlsruhe, Germany. gamm@kit.edu
authors.forename: Björn
authors.initials: B
authors.lastname: Gamm
authors.forename: Holger
authors.initials: H
authors.lastname: Blank
authors.forename: Radian
authors.initials: R
authors.lastname: Popescu
authors.forename: Reinhard
authors.initials: R
authors.lastname: Schneider
authors.forename: André
authors.initials: A
authors.lastname: Beyer
authors.forename: Armin
authors.initials: A
authors.lastname: Gölzhäuser
authors.forename: Dagmar
authors.initials: D
authors.lastname: Gerthsen