55 citations · 106 across the 5 of their papers we have counts for
4 papers · 1 filter
Three-dimensional atom-by-atom measurement of interface diffusion dynamics
Doojin Park, Hyesung Jo, Yongmin Kwon +7
Diffusion at interfaces governs how materials and devices form, evolve and function. It is usually measured through smooth concentration profiles and bulk transport coefficients, w…
Atomic-scale 3D structural dynamics and functional degradation of Pt alloy nanocatalysts during the oxygen reduction reaction
Chaehwa Jeong, Juhyeok Lee, Hyesung Jo +6
Pt-based electrocatalysts are the primary choice for fuel cells due to their superior oxygen reduction reaction (ORR) activity. To enhance ORR performance and durability, extensive…
Revealing the Three-Dimensional Arrangement of Polar Topology in Nanoparticles
Chaehwa Jeong, Juhyeok Lee, Hyesung Jo +8
In the early 2000s, low dimensional systems were predicted to have topologically nontrivial polar structures, such as vortices or skyrmions, depending on mechanical or electrical b…
Revealing 3-dimensional core-shell interface structures at the single-atom level
Hyesung Jo, Dae Han Wi, Taegu Lee +12
Nanomaterials with core-shell architectures are prominent examples of strain-engineered materials, where material properties can be designed by fine-tuning the misfit strain at the…