Structural Fingerprinting of Nanocrystals in the Transmission Electron Microscope: Utilizing Information on Projected Reciprocal Lattice Geometry, 2D Symmetry, and Structure Factors

INTRODUCTION The goal of this chapter is to outline two novel strategies for fingerprinting nanocrystals from structural information that is contained either in a precession electron diffraction (PED) pattern of a single nanocrystal (1,2) or in a fine-grained crystal powder electron diffraction ring (CPEDR) pattern with random orientation of the nanocrystallites (3-5). While structural fingerprinting from CPEDR patterns can be conveniently performed with a large primary beam diameter so that experimental data may be recorded for many nanocrystals at once, PED of individual nanocrystals requires the application of nanobeam diffraction techniques.