Zonghoon Lee
YOU?
Author Swipe
View article: Wafer‐Scale Fabrication of Edge‐Contacted Nanosheet Transistors via Alloying‐Mediated Phase Engineering
Wafer‐Scale Fabrication of Edge‐Contacted Nanosheet Transistors via Alloying‐Mediated Phase Engineering Open
Edge contacts offer significant potential for scaling down 2D transistors due to their minimal contact resistance and reduced contact length. However, their intricate fabrication complicates reproducible large‐scale production and evaluati…
View article: Interfacial Control of Degradation Pathways in 2D Heterostructures
Interfacial Control of Degradation Pathways in 2D Heterostructures Open
In two‐dimensional (2D) electronic devices, heterointerfaces between dissimilar 2D materials are essential for mechanical support and electrical integration, yet they can alter interfacial electronic structure and reaction kinetics. The lo…
View article: Synthesis and properties of mirror-like large-grain graphite films
Synthesis and properties of mirror-like large-grain graphite films Open
Graphite films with large grain sizes have been reportedly obtained by using metal as catalysts, but the obtained graphite is mostly heavily wrinkled, thus containing defects that degrade its properties. We report the synthesis of mirror-l…
View article: Alkoxy Side Chain Engineering in Metal‐Free Covalent Organic Frameworks for Efficient Oxygen Reduction
Alkoxy Side Chain Engineering in Metal‐Free Covalent Organic Frameworks for Efficient Oxygen Reduction Open
Metal‐free covalent organic frameworks (COFs) gain significant attention as catalysts for the oxygen reduction reaction (ORR), a key process in energy conversion technologies like fuel cells and metal–air batteries. While substantial effor…
View article: Resolution Deterioration of Scanning Transmission Electron Microscope in a Windowed Gas Cell
Resolution Deterioration of Scanning Transmission Electron Microscope in a Windowed Gas Cell Open
Commercially available windowed gas cells for in situ scanning transmission electron microscopy (STEM) opened vast possibilities to study gas–solid interactions with high‐spatial resolution. Modern gas cell designs comprise efforts to main…
View article: Tunable Catalytic Vertex Wall Chemistry in Metal‐free Covalent Organic Frameworks for Enhanced Oxygen Reduction
Tunable Catalytic Vertex Wall Chemistry in Metal‐free Covalent Organic Frameworks for Enhanced Oxygen Reduction Open
Metal‐free covalent organic frameworks (COFs) have emerged as promising catalysts for the oxygen reduction reaction (ORR) because of their unique structural properties and notable stability. To enhance both catalytic activity and selectivi…
View article: Tunable Catalytic Vertex Wall Chemistry in Metal‐free Covalent Organic Frameworks for Enhanced Oxygen Reduction
Tunable Catalytic Vertex Wall Chemistry in Metal‐free Covalent Organic Frameworks for Enhanced Oxygen Reduction Open
Metal‐free covalent organic frameworks (COFs) have emerged as promising catalysts for the oxygen reduction reaction (ORR) because of their unique structural properties and notable stability. To enhance both catalytic activity and selectivi…
View article: Spectroscopic Signatures of Ultra‐Thin Amorphous Carbon with the Tuned Disorder Directly Grown on a Dielectric Substrate
Spectroscopic Signatures of Ultra‐Thin Amorphous Carbon with the Tuned Disorder Directly Grown on a Dielectric Substrate Open
The reduced structural complexity of atomically thin amorphous carbons makes it suitable for semiconductor technology. Inherent challenges arise from transfer processes subsequent to growth on metallic substrates, posing significant challe…
View article: Pressure enabled organic reactions via confinement between layers of 2D materials
Pressure enabled organic reactions via confinement between layers of 2D materials Open
Confinement of reactants within nanoscale spaces of low-dimensional materials has been shown to provide reorientation of strained reactants or stabilization of unstable reactants for synthesis of molecules and tuning of chemical reactivity…
View article: In situ observation of catalyst nanoparticle sintering resistance on oxide supports via gas phase transmission electron microscopy
In situ observation of catalyst nanoparticle sintering resistance on oxide supports via gas phase transmission electron microscopy Open
Oxide-supported metal catalysts are essential components in industrial processes for catalytic conversion. However, the performance of these catalysts is often compromised in high temperature reaction environments due to sintering effects.…
View article: In situ TEM investigation of nickel catalytic graphitization
In situ TEM investigation of nickel catalytic graphitization Open
With the increasing demand for production of graphitic materials for various applications, it becomes crucial to get a fundamental understanding of how graphene layers grow on metal catalysts. Here, we performed an in situ heating transmis…
View article: Mirror-like and large grain graphite film: Synthesis and properties
Mirror-like and large grain graphite film: Synthesis and properties Open
Graphite films with large grain sizes have been reportedly obtained by using metal as catalysts, but the obtained graphite is mostly heavily wrinkled, thus containing defects that degrade its properties. We report the synthesis of mirror-l…
View article: In Situ Tensile and Fracture Behavior of Ultra-thin Amorphous Carbon in TEM
In Situ Tensile and Fracture Behavior of Ultra-thin Amorphous Carbon in TEM Open
The wide application of amorphous solids is limited by their brittle behavior.Although amorphous solids have been reported to show plasticity at the nanoscale, studies have so far been limited to metallic and oxide glasses [1][2][3][4][5].…
View article: Growth of diamond in liquid metal at 1 atmosphere pressure
Growth of diamond in liquid metal at 1 atmosphere pressure Open
Natural diamonds were (and are) formed (some, billions of years ago) in the Earth’s upper mantle in metallic melts in a temperature range of 900–1400°C and at pressures of 5–6 GPa1,2; indeed, diamond is thermodynamically stable under high …
View article: In Situ Transmission Electron Microscopy of Temperature-dependent Carbon Nanofiber and Carbon Nanotube Growth from Ethanol Vapor
In Situ Transmission Electron Microscopy of Temperature-dependent Carbon Nanofiber and Carbon Nanotube Growth from Ethanol Vapor Open
We report the in situ transmission electron microscopy (TEM) experiments to directly observe Ni catalysed CNFs/CNTs growth from alcohol precursor at near atmospheric pressure using a homebuilt bubbler system for the introduction of ethanol…
View article: In Situ Transmission Electron Microscopy of Temperature-dependent Carbon Nanofiber and Carbon Nanotube Growth from Ethanol Vapor
In Situ Transmission Electron Microscopy of Temperature-dependent Carbon Nanofiber and Carbon Nanotube Growth from Ethanol Vapor Open
We report the in situ transmission electron microscopy (TEM) experiments to directly observe Ni catalysed CNFs/CNTs growth from alcohol precursor at near atmospheric pressure using a homebuilt bubbler system for the introduction of ethanol…
View article: Morphologically Controlled Synthesis of Reduced-Dimensional ZnO/Zn(OH)<sub>2</sub> Nanosheets
Morphologically Controlled Synthesis of Reduced-Dimensional ZnO/Zn(OH)<sub>2</sub> Nanosheets Open
Conventional two-dimensional materials either have natural layered structures or are produced, with large surface areas, via physical or chemical synthesis. However, to form a two-dimensional material from a non-layered material, a method …
View article: Atomic transistors based on seamless lateral metal-semiconductor junctions with a sub-1-nm transfer length
Atomic transistors based on seamless lateral metal-semiconductor junctions with a sub-1-nm transfer length Open
The edge-to-edge connected metal-semiconductor junction (MSJ) for two-dimensional (2D) transistors has the potential to reduce the contact length while improving the performance of the devices. However, typical 2D materials are thermally a…
View article: In-Situ Formation of Co Particles Encapsulated by Graphene Layers
In-Situ Formation of Co Particles Encapsulated by Graphene Layers Open
The process of encapsulating cobalt nanoparticles using graphene layers is mainly direct pyrolysis. The encapsulation structure of hybrids prepared in this way improves the catalyst stability, which greatly reduces the leaching of non-meta…
View article: Homoepitaxial Diamond Grown in a Liquid Metal Solvent
Homoepitaxial Diamond Grown in a Liquid Metal Solvent Open
A single-crystal diamond substrate (SCDS) with a (100) surface orientation was submerged in liquid gallium containing a small amount of dissolved silicon, and exposed to a mixture of methane and hydrogen at 1 atm and 900 ºC. New growth dia…
View article: Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence
Unconventional assemblies of bisacylhydrazones: The role of water for circularly polarized luminescence Open
Understanding the precise molecular arrangement of chiral supramolecular polymers is essential not only to comprehend complex superstructures like proteins and DNA but also for the development of next‐generation optoelectronic materials, i…
View article: Correction: Thermally driven phase transition of cobalt hydroxide sheets <i>via</i> cobalt oxides to cobalt nanoparticles
Correction: Thermally driven phase transition of cobalt hydroxide sheets <i>via</i> cobalt oxides to cobalt nanoparticles Open
Correction for ‘Thermally driven phase transition of cobalt hydroxide sheets via cobalt oxides to cobalt nanoparticles’ by Aram Yoon et al. , Nanoscale Horiz. , 2022, https://doi.org/10.1039/d2nh00218c.
View article: In Situ Scanning Transmission Electron Microscopy Study of MoS<sub>2</sub> Formation on Graphene with a Deep-Learning Framework
In Situ Scanning Transmission Electron Microscopy Study of MoS<sub>2</sub> Formation on Graphene with a Deep-Learning Framework Open
Atomic-scale information is essential for understanding and designing unique structures and properties of two-dimensional (2D) materials. Recent developments in in situ transmission electron microscopy (TEM) and scanning transmission elect…