Ultrafast and nanoscale energy transduction mechanisms and coupled thermal transport across interfaces

A Giri, SG Walton, J Tomko, N Bhatt, MJ Johnson… - ACS …, 2023 - ACS Publications
The coupled interactions among the fundamental carriers of charge, heat, and
electromagnetic fields at interfaces and boundaries give rise to energetic processes that …

Probing functional structures, defects, and interfaces of 2D transition metal dichalcogenides by electron microscopy

R Luo, M Gao, C Wang, J Zhu… - Advanced Functional …, 2024 - Wiley Online Library
Abstract 2D transition metal dichalcogenides (TMDs) exhibit remarkable properties that are
strongly influenced by their atomic structures, as well as by various types of defects and …

Single-atom vibrational spectroscopy with chemical-bonding sensitivity

M Xu, DL Bao, A Li, M Gao, D Meng, A Li, S Du, G Su… - Nature Materials, 2023 - nature.com
Correlation of lattice vibrational properties with local atomic configurations in materials is
essential for elucidating functionalities that involve phonon transport in solids. Recent …

Direct visualization of localized vibrations at complex grain boundaries

ER Hoglund, DL Bao, A O'Hara, TW Pfeifer… - Advanced …, 2023 - Wiley Online Library
Grain boundaries (GBs) are a prolific microstructural feature that dominates the functionality
of a wide class of materials. The functionality at a GB results from the unique atomic …

Interfacial interaction and intense interfacial ultraviolet light emission at an incoherent interface

X Yan, Y Jiang, Q Jin, T Yao, W Wang, A Tao… - Nature …, 2023 - nature.com
Incoherent interfaces with large mismatches usually exhibit very weak interfacial interactions
so that they rarely generate intriguing interfacial properties. Here we demonstrate …

Correlated Quantum Phenomena of Spin–Orbit Coupled Perovskite Oxide Heterostructures: Cases of SrRuO3 and SrIrO3 Based Artificial Superlattices

SG Jeong, JY Oh, L Hao, J Liu… - Advanced Functional …, 2023 - Wiley Online Library
Unexpected, yet useful functionalities emerge when two or more materials merge
coherently. Artificial oxide superlattices realize atomic and crystal structures that are not …

Dynamic STEM-EELS for single-atom and defect measurement during electron beam transformations

KM Roccapriore, R Torsi, J Robinson, S Kalinin… - Science …, 2024 - science.org
This study introduces the integration of dynamic computer vision–enabled imaging with
electron energy loss spectroscopy (EELS) in scanning transmission electron microscopy …

Atomic-scale probing of heterointerface phonon bridges in nitride semiconductor

YH Li, RS Qi, RC Shi, JN Hu, ZT Liu… - Proceedings of the …, 2022 - National Acad Sciences
Interface phonon modes that are generated by several atomic layers at the heterointerface
play a major role in the interface thermal conductance for nanoscale high-power devices …

Nanoscale Localized Phonons at Al2O3 Grain Boundaries

J Yan, R Shi, J Wei, Y Li, R Qi, M Wu, X Li, B Feng… - Nano Letters, 2024 - ACS Publications
Nanoscale defects like grain boundaries (GBs) would introduce local phonon modes and
affect the bulk materials' thermal, electrical, optical, and mechanical properties. It is highly …

Thickness-dependent interface polarity in infinite-layer nickelate superlattices

C Yang, RA Ortiz, Y Wang, W Sigle, H Wang… - Nano Letters, 2023 - ACS Publications
The interface polarity plays a vital role in the physical properties of oxide heterointerfaces
because it can cause specific modifications of the electronic and atomic structure …