Dimensionality Dependent Materials Functionality

The "Dimensionality Dependent Materials Functionality" group is dedicated to advancing atomic frontier of quantum and energy materials (devices) through cutting-edge multi-modal transmission electron microscopy (TEM) techniques with unparalleled spatial and energy resolution. The primary research focus lies in the interface between atomic imaging and atomic fabrication, exploring how constituent atoms are assembled and interplay in low-dimensional materials and devices fabricated with atomic layer precision, particularly at interfaces, and how these specific atomic structures define their functional appearance. Additionally, we are interested in low dimensional materials, including 2D materials, 1D nanowires, and 0D single atoms, for catalytic and energy applications. Key multi-modal TEM methods involve quantitative STEM, core-loss EELS, vibrational EELS, 4DSTEM, cryogenic TEM, and AI-driven EM.  Our recent breakthroughs include novel symmetry-broken oxide interfaces and stacking-selective intercalation in epitaxial transition metal dichalcogenides. Our innovative research aims to unlock new functionalities and applications in the realm of quantum and energy materials, driving technological advances and expanding scientific knowledge.

Localized phenomena in Quantum matter Heterostructures

Quantum matter heterostructures refer to the combination of different quantum materials, such as complex oxide materials and transition metal dichalcogenides, into layered assemblies. more

Tailored Structural and Functional Properties in Low Dimensional Nanostructures

Low-dimensional nanostructures, characterized by their reduced dimensionality (one or two dimensions), exhibit unique properties absent in bulk materials due to quantum confinement effects and enhanced surface-to-volume ratios. more

Ordered States in Quantum Matter

Ordered states in quantum materials refer to the highly organized arrangements of lattice, spin, and charge that give rise to unique and often exotic physical properties. more

Low Dimensional Materials

Low dimensional materials, such as two-dimensional (2D) materials, one-dimensional (1D) nanowires, and zero-dimensional (0D) quantum dots, have unique structural and electronic properties that make them highly effective for energy and catalytic applications. more