Current Research Projects:

1) Nanocrystals surfaces and interfaces (NSF): The goal of the project is to
determine the surface and interface energies and their correlation with atomic
structure of selected nanostructures.

Electron nanocrystallography (DOE): Develop methods for quantifying
and mapping crystal symmetry using scanning CBED, determination of polar
domains with nanometer resolution. Study of fundamental symmetry in
technological ferroelectric crystals

Atomic and electronic structure of high Tc superconductors (EFRC):
characterization of point, line, planar and volume defects in superconductors
and their local electronic structure

Defects in type-II compound semicoductor superlattices (Army):
Understanding interplay between composition, strain and defects and their
effects in III-V heterostructures

Semiconductor device structure (Intel)
Research highlights
Professor Jian-Min Zuo Research Group
University of Illinois, Urbana-Champaign
A diffraction based technique is developed for the determination of three-dimensional (3D)
nanostructures. The technique employs high resolution and low-dose scanning electron
nanodiffraction (SEND) to acquire 3D diffraction patterns, with the help of a special sample
holder for large angle rotation. Grains are identified in the 3D space based on the crystal
orientation and the reconstructed dark-field images from the recorded diffraction patterns.
Application to a nanocrystalline TiN thin-film shows that the 3D morphology of the columnar
TiN grains of tens of nm in diameter can be reconstructed using an algebraic iterative
algorithm under the specified prior conditions, together with their crystallographic
orientations. The principles can be extended to multi-phase nanocrystalline materials as
well. Thus, the 3D-SEND technique provides an effective and adaptive way to determine 3D
nanostructures. (IUCRj, Sept., 2016, doi:10.1107/S205225251600943X,