Advancing Quantitative Electron MicroscopyQuantitative understanding of electron microscopy (EM) signals is critical to develop new EM techniques that can determine the atomic to nanoscale structure that directly relates to the important properties of a wide range of new materials. We currently... | LEARN MORE
Structural Heterogeneity and Deformation in Metallic lassesThis is an integrated experimental and computational study of the correlation between nanoscale structural heterogeneities and deformation behavior of metallic glasses (MGs). We use 4-dimensional scanning transmission electron microscopy (4D-STEM)... | LEARN MORE
Novel Methods for the Design and Fabrication of Complex Disordered SolidsWe develop an ab initio molecular dynamics (AIMD) and hybrid reverse Monte Carlo (HRMC) simulation algorithm, augmented by ab initio based energy constraints, that couples with experimental input and feedback, including fluctuation microscopy and nuclear... | LEARN MORE
Ultra Wide Band Gap III-Nitride Semiconductor Materials and DevicesWe develop an understanding of synthesis, structure, and electronic properties of technologically important ultra-wide band gap III-Nitride AlGaN alloy semiconductor interfaces. This project is in collaboration with Prof. Siddharth Rajan in Electrical... | LEARN MORE
4D-STEM for Highly Heterogeneous MaterialsFour-dimensional scanning transmission electron microscopy (4D-STEM), enabled by the new-generation pixelated fast STEM detectors, has started revolutionizing the way we acquire electron microscopy data. We advance this new capability to study the... | LEARN MORE
What we do
The design, discovery, and synthesis of new materials will require atomic scale control, and new characterization tools and techniques will be critical. Within the last decade, advances in (scanning) transmission electron microscopy (S/TEM) have allowed for the imaging of materials with unprecedented resolution. Based on these advances, the next phase of electron microscopy will be to develop new characterization techniques to solve the eminent problems in materials science, and to extract information, such as about materials 3D structure and functionality, from the atomic to meso scale.