Ching‐Yu Chiang

Artificial Grain Boundaries Created by Freestanding Membrane Transfer Reveal Angle‐Dependent Ferroelectric Switching and Leakage in BaTiO 3

ABSTRACT Grain boundaries (GBs) strongly influence polycrystalline ferroelectrics, but their discrete effects are difficult to isolate because of nanoscale heterogeneity. Here, we use freestanding membrane transfer to fabricate artificial GBs with controlled, experimentally acces...

Electrostatic Regulation of Sulfur Spatial Evolution for Dimensionally Stable Lithium–Sulfur Batteries

ABSTRACT Lithium–sulfur (Li–S) batteries are promising for high‐energy storage but are limited by complex multistep sulfur redox reactions that induce polysulfide migration, sluggish conversion kinetics, and severe cathode swelling. Here, we report a boron nitride/carbon nanotube...

Synchrotron X-ray-informed machine learning for local hardness mapping in a Cu–Ni–Ti–Hf–Zr high-entropy shape-memory alloy

A supervised machine-learning framework was used to relate colocated synchrotron X-ray fluorescence (XRF), X-ray nanodiffraction (XND), thermodynamic descriptors, and nanoindentation measurements to local hardness in an as-cast Cu 15 Ni 35 Ti 25 Hf 12. 5Zr 12.5 high-entropy shape...