Diffusion barrier
View article: Enhanced mechanical properties and corrosion resistance synergy of multi-layered aluminum sheets fabricated with interlayer
Enhanced mechanical properties and corrosion resistance synergy of multi-layered aluminum sheets fabricated with interlayer Open
This study systematically investigates the dual enhancement of mechanical properties and corrosion resistance in multi-layered aluminum sheets achieved through the introduction of an interlayer. The interlayer serves as an effective diffus…
View article: Mechanisms for the Formation of Active Sites in Single-Atom Alloys
Mechanisms for the Formation of Active Sites in Single-Atom Alloys Open
Reactive dopant atoms embedded in inert host metal surfaces define the active sites in single-atom alloys (SAAs), yet SAA synthesis remains challenging. To address this, we elucidate how dopant adatoms deposited on Cu and Ag surfaces becom…
View article: Permeation mechanism of gas molecules through polyimide barrier coatings with freeze- and oven-dried modified layered silicates
Permeation mechanism of gas molecules through polyimide barrier coatings with freeze- and oven-dried modified layered silicates Open
One effective strategy to improve the barrier performance of polymeric coating layers is the incorporation of layered silicate particles. This study investigates how the drying technology of silicates - specifically freeze drying versus ov…
View article: Mechanisms for the Formation of Active Sites in Single-Atom Alloys
Mechanisms for the Formation of Active Sites in Single-Atom Alloys Open
Reactive dopant atoms embedded in inert host metal surfaces define the active sites in single-atom alloys (SAAs), yet SAA synthesis remains challenging. To address this, we elucidate how dopant adatoms deposited on Cu and Ag surfaces becom…
View article: Probing the Impact of Vacancy Diffusion on Void Dynamics at the Lithium Metal–Solid Electrolyte Interface
Probing the Impact of Vacancy Diffusion on Void Dynamics at the Lithium Metal–Solid Electrolyte Interface Open
Lithium (Li) metal‐based solid‐state batteries (SSBs) are considered promising candidates for next‐generation energy storage due to their superior energy density and enhanced safety compared to conventional Li‐ion systems. However, their p…
View article: Hydrogen diffusion in TiCr$_2$H$_x$ Laves phases: A combined ab initio and machine-learning-potential study
Hydrogen diffusion in TiCr$_2$H$_x$ Laves phases: A combined ab initio and machine-learning-potential study Open
The kinetics of hydrogen diffusion in C15 cubic and C14 hexagonal TiCr$_2$H$_x$ (0 < $x$ <= 4) Laves-phase hydrogen storage alloys is investigated with density functional theory (DFT) and machine learning interatomic potentials (MLIPs). Ge…
View article: Hydrogen diffusion in TiCr$_2$H$_x$ Laves phases: A combined ab initio and machine-learning-potential study
Hydrogen diffusion in TiCr$_2$H$_x$ Laves phases: A combined ab initio and machine-learning-potential study Open
The kinetics of hydrogen diffusion in C15 cubic and C14 hexagonal TiCr$_2$H$_x$ (0 < $x$ <= 4) Laves-phase hydrogen storage alloys is investigated with density functional theory (DFT) and machine learning interatomic potentials (MLIPs). Ge…
View article: Long-Term Degradation Analysis of Perovskite Solar Cells over Three Years
Long-Term Degradation Analysis of Perovskite Solar Cells over Three Years Open
Power‐conversion efficiencies (PCEs) in perovskite solar cells (PSCs) have risen to levels that now rival established photovoltaic technologies. Yet translation to market hinges not on peak efficiency alone, but on rigorous demonstrations …
View article: Pillar arrays as tunable interfacial barriers for microphysiological systems
Pillar arrays as tunable interfacial barriers for microphysiological systems Open
We report on the design and fabrication of a circular pillar array as an interfacial barrier for microfluidic microphysiological systems (MPS). Traditional barrier interfaces, such as porous membranes and microchannel arrays, present limit…
View article: Circumventing Self‐Diffusion Enables High‐Rate Hard Carbon Anodes
Circumventing Self‐Diffusion Enables High‐Rate Hard Carbon Anodes Open
Hard carbons (HCs) are promising anode materials for sodium‐ion batteries (SIBs), yet their application faces a critical challenge that sluggish kinetics in low‐potential regions (<0.1 V) severely limit fast‐charging capability, and the or…
View article: Beyond Silver: Comparative Performance Analysis of Alternative Metallization Strategies in Silicon Solar Cells
Beyond Silver: Comparative Performance Analysis of Alternative Metallization Strategies in Silicon Solar Cells Open
The photovoltaic industry’s reliance on silver (Ag) for silicon solar cell metallization faces critical challenges due to Ag scarcity, cost volatility, and sustainability concerns. This study systematically evaluates advanced metallization…
View article: XPS Investigation of Diffusion-Bonded Homogeneous Cu-Cu and Heterogeneous Cu-Al Junctions
XPS Investigation of Diffusion-Bonded Homogeneous Cu-Cu and Heterogeneous Cu-Al Junctions Open
Diffusion bonding is an excellent technology, and it is expected to open new fields of application. To further develop diffusion bonding technology, it is necessary to investigate the inter-diffusion phenomena that occur at the atomic leve…
View article: Decoupling Electronic and Crystal Structure Effects to Overcome the Capacity‐Stability Trade‐Off for High‐Performance Aqueous Zinc‐Ion Batteries
Decoupling Electronic and Crystal Structure Effects to Overcome the Capacity‐Stability Trade‐Off for High‐Performance Aqueous Zinc‐Ion Batteries Open
Aqueous zinc‐ion batteries (ZIBs) with high capacity and long cycling stability are largely hindered by sluggish Zn 2+ diffusion kinetics and irreversible cathode dissolution. Herein, electron delocalization is manipulated in vanadium oxid…
View article: Diffusion Barriers for Electrodes in Resistance Spot Welding of Aluminum Alloys—Investigation of Coating Characteristics Using Nanoindentation and SEM Analysis
Diffusion Barriers for Electrodes in Resistance Spot Welding of Aluminum Alloys—Investigation of Coating Characteristics Using Nanoindentation and SEM Analysis Open
Resistance spot welding of aluminum alloys causes the electrode materials to degrade rapidly. This is due to diffusion processes occurring between the sheet materials and the copper electrodes at process temperatures of up to 600 °C. This …
View article: Unveiling Dominant Processes of Na Cluster Formation and Na‐Ion Diffusion in Hard Carbon Nano‐Pore: A DFT‐MD Study
Unveiling Dominant Processes of Na Cluster Formation and Na‐Ion Diffusion in Hard Carbon Nano‐Pore: A DFT‐MD Study Open
The pore filling by Na cluster formation in designated hard carbon (HC) anodes has been reported as a major origin of the extended plateau capacity for Na‐ion battery. However, there is a lack of thorough insight into the mechanism of Na c…
View article: Elemental distribution at diffusion bonding interface of FeAlSi thermoelectric material and Cu
Elemental distribution at diffusion bonding interface of FeAlSi thermoelectric material and Cu Open
Thermoelectric generation is a promising technology for the realization of a carbon–neutral society. Many kinds of semiconductors are developed as high-efficiency thermoelectric materials. For example, some types of silicide semiconductors…
View article: Coherent Interface Growth of PCuAg‐Si Anode for Long‐Term Cycling Stability in All‐Solid‐State Batteries
Coherent Interface Growth of PCuAg‐Si Anode for Long‐Term Cycling Stability in All‐Solid‐State Batteries Open
Sulfide all solid‐state batteries (ASSBs) with Si‐based anode offers a promising route to high energy density of Energy Storage Devices. Nevertheless, the unstable interface of ASSBs remains a critical challenge, especially causing issues …
View article: Kinetics of thermal oxidation of silicon
Kinetics of thermal oxidation of silicon Open
This article reviews findings from the 2000s that led a reevaluation of the conventional understanding of the silicon thermal oxidation, prompted by the discovery of the so-called layer-by-layer oxidation phenomenon. Since the work of Deal…
View article: Mobile chemical cage: Revealing the origin of anomalous lithium diffusion in liquid $Li_{17}Pb_{83}$ alloy
Mobile chemical cage: Revealing the origin of anomalous lithium diffusion in liquid $Li_{17}Pb_{83}$ alloy Open
The high-temperature performance of liquid $Li_{17}Pb_{83}$, a key fusion reactor material, is governed by its atomic-scale dynamics. Using ab initio molecular dynamics, we discover that lithium diffusion is not free but confined within ca…
View article: First-Principles Study of Rare-Earth Doping Effects on Nitrogen Adsorption and Diffusion in Chromium
First-Principles Study of Rare-Earth Doping Effects on Nitrogen Adsorption and Diffusion in Chromium Open
To address the premature corrosion failure of chromium-based coatings in harsh environments (e.g., high temperatures, chloride-containing solutions), this work systematically investigates how rare-earth (RE, i.e., Ce and La) elements regul…
View article: Mobile chemical cage: Revealing the origin of anomalous lithium diffusion in liquid $Li_{17}Pb_{83}$ alloy
Mobile chemical cage: Revealing the origin of anomalous lithium diffusion in liquid $Li_{17}Pb_{83}$ alloy Open
The high-temperature performance of liquid $Li_{17}Pb_{83}$, a key fusion reactor material, is governed by its atomic-scale dynamics. Using ab initio molecular dynamics, we discover that lithium diffusion is not free but confined within ca…
View article: Role of Wadsley Defects and Cation Disorder to Enhance MoNb12O33 Diffusion
Role of Wadsley Defects and Cation Disorder to Enhance MoNb12O33 Diffusion Open
Wadsley-Roth (WR) niobates have emerged as high-rate anode materials that can combine rapid ionic diffusion with good electronic conductivity. WR compounds have been defect-enhanced by limited annealing, however, such materials often conta…
View article: Role of Wadsley Defects and Cation Disorder to Enhance MoNb12O33 Diffusion
Role of Wadsley Defects and Cation Disorder to Enhance MoNb12O33 Diffusion Open
Wadsley-Roth (WR) niobates have emerged as high-rate anode materials that can combine rapid ionic diffusion with good electronic conductivity. WR compounds have been defect-enhanced by limited annealing, however, such materials often conta…
View article: Charge lateral diffusion in MIS-HEMTs and its influence on stress and recovery conditions with single and bilayer insulators
Charge lateral diffusion in MIS-HEMTs and its influence on stress and recovery conditions with single and bilayer insulators Open
This study investigates the impact of charge trapping and diffusion on the electrical characteristics of gallium nitride (GaN) metal–insulator-semiconductor high electron mobility transistors (MIS-HEMTs) with single layer and bilayer of ga…
View article: Optimizing the annealing process of sol–gel hybrid coating technology for corrosion barrier protection of Al
Optimizing the annealing process of sol–gel hybrid coating technology for corrosion barrier protection of Al Open
Corrosion, commonly associated with ferrous materials, also affects aluminum alloys. Given the degradation that corrosion can inflict on aluminum structures, this study focuses on optimizing nanostructured sol–gel silica-zirconia coatings …
View article: Revealing Valence‐Dependent Inductive Effects of Titanium on Phase Transition Behavior toward P2/Tunnel Heterostructure in Sodium‐Ion Battery
Revealing Valence‐Dependent Inductive Effects of Titanium on Phase Transition Behavior toward P2/Tunnel Heterostructure in Sodium‐Ion Battery Open
P2‐type layered oxides are acknowledged as highly promising cathode possibilities for sodium‐ion batteries (SIBs); nonetheless, they generally experience significant capacity degradation and slow Na⁺ diffusion kinetics. While P2/tunnel com…
View article: Structural Configuration Effects of Freestanding TiO2 Nanotube Arrays on Power Conversion Efficiency in Dye-Sensitized Solar Cells
Structural Configuration Effects of Freestanding TiO2 Nanotube Arrays on Power Conversion Efficiency in Dye-Sensitized Solar Cells Open
Dye-sensitized solar cells (DSSCs) are known for their excellent low-light performance, cost-effectiveness, and flexibility. The photoanode has a crucial role in enhancing the overall performance of DSSCs and can be modified with different…
View article: Surface-Tension-Governed Nanoconfinement for Tunable Hydrogen-Isotope Transport
Surface-Tension-Governed Nanoconfinement for Tunable Hydrogen-Isotope Transport Open
Interfacial forces and nanoconfined environments play crucial roles in transport phenomena within low-dimensional materials. In this study, we propose a photothermally regulated surface-tension mechanism for hydrogen-isotope fractionation,…
View article: Characterisation of thermal diffusion of copper ions in silver
Characterisation of thermal diffusion of copper ions in silver Open
To offer the number of signals required in modern day semiconductor devices, lead frames connect the central die inside a chip package to the outside. A widely used material for lead frames of semiconductor devices is copper. A drawback of…
View article: Atomic scale of ruthenium silicidation and diffusion behaviors by in-situ transmission electron microscope investigation
Atomic scale of ruthenium silicidation and diffusion behaviors by in-situ transmission electron microscope investigation Open
Transition metal silicides possess high thermal stability and good electrical conductivity, making them widely used in various engineering fields. Ruthenium silicide, a narrow-bandgap semiconductor, combines low chemical reactivity with a …