Fangmin Guo
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View article: Simultaneous/same-frequency/bidirectional terahertz vortex beam and beam-splitting generator
Simultaneous/same-frequency/bidirectional terahertz vortex beam and beam-splitting generator Open
We proposed what we believe to be a novel simultaneous bidirectional terahertz vortex beam generator and beam splitter at the same frequency without changing external conditions. This metasurface consists of a five-layer structure, includi…
View article: Overcoming the Damping–Elasticity Paradox via 3D‐Printed NiTiSn Nanocomposite
Overcoming the Damping–Elasticity Paradox via 3D‐Printed NiTiSn Nanocomposite Open
Developing high damping alloys (HDAs) with large elastic strain has attracted growing attention due to the increasing demand for energy absorption with overload reliability and reusability. However, damping capacity inherently conflicts wi…
View article: LGM-Pose: A Lightweight Global Modeling Network for Real-time Human Pose Estimation
LGM-Pose: A Lightweight Global Modeling Network for Real-time Human Pose Estimation Open
Most of the current top-down multi-person pose estimation lightweight methods are based on multi-branch parallel pure CNN network architecture, which often struggle to capture the global context required for detecting semantically complex …
View article: Superelastic stability of nanocrystalline Ni47Ti50Fe3 shape memory alloy
Superelastic stability of nanocrystalline Ni47Ti50Fe3 shape memory alloy Open
NiTi shape memory alloys have been widely explored because of their superelasticity. However, the application of conventional coarsed NiTi SMAs is limited by low superelastic stress and poor superelastic stability due to their low yield st…
View article: Optimal Microstructure of Silicon Monoxide as the Anode for Lithium-Ion Batteries
Optimal Microstructure of Silicon Monoxide as the Anode for Lithium-Ion Batteries Open
Because of its metastable nature, silicon monoxide (SiO) consists of Si nanodomains in an amorphous matrix of SiO2. The microstructure of SiO, including SiO2, Si domains, and interphase (SiOx) between domains, was modified via an annealing…
View article: Selective Laser Melting of 60NiTi Alloy with Superior Wear Resistance
Selective Laser Melting of 60NiTi Alloy with Superior Wear Resistance Open
In this work, the selective laser melting (SLM) 60NiTi alloy was successfully fabricated. Through designing an orthogonal experiment of parameters optimization including laser power (P) and scanning speed (v), the optimal parameters window…
View article: The Effect of Wall Thickness and Scanning Speed on the Martensitic Transformation and Tensile Properties of Selective Laser Melted NiTi Thin-Wall Structures
The Effect of Wall Thickness and Scanning Speed on the Martensitic Transformation and Tensile Properties of Selective Laser Melted NiTi Thin-Wall Structures Open
In this study, we analyzed the coupling effect of laser scanning speed and wall thickness on the phase transformation behavior and tensile properties of selective laser melted NiTi thin-wall structures. It is demonstrated that either scann…
View article: <i>In situ</i> and <i>operando</i> investigation of the dynamic morphological and phase changes of a selenium-doped germanium electrode during (de)lithiation processes
<i>In situ</i> and <i>operando</i> investigation of the dynamic morphological and phase changes of a selenium-doped germanium electrode during (de)lithiation processes Open
An in situ formed, super-ionically conductive, and inactive network in high capacity anode particles can improve the performance of Li-ion batteries.
View article: Insights into Structural Evolution of Lithium Peroxides with Reduced Charge Overpotential in Li−O<sub>2</sub> System
Insights into Structural Evolution of Lithium Peroxides with Reduced Charge Overpotential in Li−O<sub>2</sub> System Open
Reducing charge–discharge overpotential is of great significance to enhance the efficiency and cyclability of Li−O 2 batteries. Here a dramatically reduced charge overpotential (0.4 V) via a rational design of cathode architecture, which f…
View article: Stabilizing the Interface between Sodium Metal Anode and Sulfide-Based Solid-State Electrolyte with an Electron-Blocking Interlayer
Stabilizing the Interface between Sodium Metal Anode and Sulfide-Based Solid-State Electrolyte with an Electron-Blocking Interlayer Open
Sulfide-based Na-ion conductors are promising electrolytes for all-solid-state sodium batteries (ASSSBs) because of high ionic conductivity and favorable formability. However, no effective strategy has been reported for long-duration Na cy…
View article: BCC-Phased PdCu Alloy as a Highly Active Electrocatalyst for Hydrogen Oxidation in Alkaline Electrolytes
BCC-Phased PdCu Alloy as a Highly Active Electrocatalyst for Hydrogen Oxidation in Alkaline Electrolytes Open
Anion-exchange membrane fuel cells hold promise to greatly reduce cost by employing nonprecious metal cathode catalysts. More efficient anode catalysts are needed, however, to improve the sluggish hydrogen oxidation reaction in alkaline el…
View article: Insights into the Performance Degradation of Oxygen-Type Manganese-Rich Layered Oxide Cathodes for High-Voltage Sodium-Ion Batteries
Insights into the Performance Degradation of Oxygen-Type Manganese-Rich Layered Oxide Cathodes for High-Voltage Sodium-Ion Batteries Open
The cost of batteries is becoming as important as the energy density for large-scale electrochemical energy storage application. Sodium manganese-rich layered oxides (P-type and O-type) are thus one of the promising cathode materials for r…
View article: On Disrupting the Na<sup>+</sup>-Ion/Vacancy Ordering in P2-Type Sodium–Manganese–Nickel Oxide Cathodes for Na<sup>+</sup>-Ion Batteries
On Disrupting the Na<sup>+</sup>-Ion/Vacancy Ordering in P2-Type Sodium–Manganese–Nickel Oxide Cathodes for Na<sup>+</sup>-Ion Batteries Open
An investigation of the electrochemical and structural properties of layered P2-Na0.62Mn0.75Ni0.25O2 is presented. The effect of changing the Mn:Ni ratio (3:1) from what is found in Na0.67Mn0.67Ni0.33O2 (2:1) and consequently the introduct…
View article: Localized Symmetry Breaking for Tuning Thermal Expansion in ScF<sub>3</sub> Nanoscale Frameworks
Localized Symmetry Breaking for Tuning Thermal Expansion in ScF<sub>3</sub> Nanoscale Frameworks Open
The local symmetry, beyond the averaged crystallographic structure, tends to bring unusual performances. Negative thermal expansion is a peculiar physical property of solids. Here, we report the delicate design of the localized symmetry br…