Dongyang Wan
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View article: Van der Waals/MCT Heterostructure Enabled High-Performance Uncooled Mid-Infrared Photodetectors via Synergistic Suppression of Dark Current and Interfacial Recombination
Van der Waals/MCT Heterostructure Enabled High-Performance Uncooled Mid-Infrared Photodetectors via Synergistic Suppression of Dark Current and Interfacial Recombination Open
Mid-wavelength infrared (MWIR) photodetection is crucial for applications such as night vision, remote sensing, spectral imaging and optical communication, yet its room-temperature operation faces a fundamental challenge of excessive dark …
View article: Van der Waals integrated single-junction light-emitting diodes exceeding 10% quantum efficiency at room temperature
Van der Waals integrated single-junction light-emitting diodes exceeding 10% quantum efficiency at room temperature Open
The construction of miniaturized light-emitting diodes (LEDs) with high external quantum efficiency (EQE) at room temperature remains a challenge for on-chip optoelectronics. Here, we demonstrate microsized LEDs fabricated by a dry-transfe…
View article: 2D Memory Selectors with Giant Nonlinearity Enabled by Van der Waals Heterostructures
2D Memory Selectors with Giant Nonlinearity Enabled by Van der Waals Heterostructures Open
The integration of one‐selector‐one‐resistor crossbar arrays requires the selectors featured with high nonlinearity and bipolarity to prevent leakage currents and any crosstalk among distinct cells. However, a selector with sufficient nonl…
View article: Evaluating changes in business distribution within urban rail transit hubs in Beijing via Point of Interest (POI) data analysis (2008–2020)
Evaluating changes in business distribution within urban rail transit hubs in Beijing via Point of Interest (POI) data analysis (2008–2020) Open
This paper, set against the backdrop of expanding urban rail networks and dynamic urban development, focuses on the distribution and evolution of commercial Points of Interests (POIs) within the central urban rail transit areas of Beijing.…
View article: Silver nanoparticle-induced enhancement of light extraction in two-dimensional light-emitting diodes
Silver nanoparticle-induced enhancement of light extraction in two-dimensional light-emitting diodes Open
Monolayer transition metal dichalcogenides (TMDCs) with direct bandgaps are considered promising candidates for building light-emitting diodes (LEDs). One crucial indicator of their performance is the brightness of electroluminescence (EL)…
View article: Observation of perfect diamagnetism and interfacial effect on the electronic structures in infinite layer Nd0.8Sr0.2NiO2 superconductors
Observation of perfect diamagnetism and interfacial effect on the electronic structures in infinite layer Nd0.8Sr0.2NiO2 superconductors Open
Nickel-based complex oxides have served as a playground for decades in the quest for a copper-oxide analog of the high-temperature superconductivity. They may provide clues towards understanding the mechanism and an alternative route for h…
View article: Effect of Space Configurational Attributes on Social Interactions in Urban Parks
Effect of Space Configurational Attributes on Social Interactions in Urban Parks Open
Urban parks are one of the most common spaces for social interactions in modern cities. The design of park spaces, especially space configuration, has significant influences on people’s social behaviors in parks. In this study, the associa…
View article: Observation of perfect diamagnetism and interfacial effect on the electronic structures in infinite layer Nd0.8Sr0.2NiO2 superconductors
Observation of perfect diamagnetism and interfacial effect on the electronic structures in infinite layer Nd0.8Sr0.2NiO2 superconductors Open
Nickel-based complex oxides have served as a playground for decades in the quest for a copper-oxide analog of the high-temperature (high- T c ) superconductivity. They may provide key points towards understanding the mechanism and an alter…
View article: Observation of perfect diamagnetism and interfacial effect on the electronic structures in Nd0.8Sr0.2NiO2 superconducting infinite layers
Observation of perfect diamagnetism and interfacial effect on the electronic structures in Nd0.8Sr0.2NiO2 superconducting infinite layers Open
Nickel-based complex oxides have served as a playground for decades in the quest for a copper-oxide analog of the high-temperature superconductivity. They may provide clues towards understanding the mechanism and an alternative route for h…
View article: The Design of CMOS-Compatible Plasmonic Waveguides for Intra-Chip Communication
The Design of CMOS-Compatible Plasmonic Waveguides for Intra-Chip Communication Open
A CMOS-compatible plasmonic waveguide with a metal or metal-like strip sandwiched in-between dielectrics has been proposed for intra-chip communication in the more-than-Moore era. A sequence of numerical models has been presented to evalua…
View article: Engineering covalently bonded 2D layered materials by self-intercalation
Engineering covalently bonded 2D layered materials by self-intercalation Open
Two-dimensional (2D) materials1–5 offer a unique platform from which to explore the physics of topology and many-body phenomena. New properties can be generated by filling the van der Waals gap of 2D materials with intercalants6, 7; howeve…
View article: Experimental study on deformation of heavy metal contaminated expansive soil under cyclic loading
Experimental study on deformation of heavy metal contaminated expansive soil under cyclic loading Open
Heavy metal pollution has received widespread attention at home and abroad as an important environmental engineering problem, and the research on the deformation characteristics of heavy metal contaminated expansive soil under cyclic loadi…
View article: Research on Strength and Microstructure Characteristics of Cement Solidified Cadmium Contaminated Expansive Soil
Research on Strength and Microstructure Characteristics of Cement Solidified Cadmium Contaminated Expansive Soil Open
Depending on the laboratory test of consolidation expansive soil polluted by heavy metal Cd, we can use cement to cure expansive soil artificially polluted by cadmium nitrate in different concentration. The paper discussed how the heavy me…
View article: New Family of Plasmonic Photocatalysts without Noble Metals
New Family of Plasmonic Photocatalysts without Noble Metals Open
Efficient photocatalysis is important for sustainable energy. Recently, an unconventional photocatalyst based on intrinsic plasmon, called intrinsic plasmonic photocatalyst (IPP), seems promising for higher efficiency in hydrogen evolution…
View article: Experimental Study on Physical and Mechanical Properties of Expansive Soil Polluted by Heavy Metals
Experimental Study on Physical and Mechanical Properties of Expansive Soil Polluted by Heavy Metals Open
With the rapid development of economy, heavy metal pollution has brought serious harm to the engineering construction in expansive soil area. The Experimental study are to further reveal its physical and mechanical properties, and better g…
View article: The Analytical Solution for Consolidation of Vertical Drain with Vacuum Preloading Based on Equivalent Annular Drain
The Analytical Solution for Consolidation of Vertical Drain with Vacuum Preloading Based on Equivalent Annular Drain Open
Based on the equivalent annular band-shaped drain, and considering the vacuum preloading and the variation of radial permeability coefficient of the smeared soil zone, the mathematical model is established. An analytic method is used to de…
View article: One-dimensional Z-scheme TiO<SUB align="right">2/WO<SUB align="right">3 composite nanofibres for enhanced photocatalytic activity of hydrogen production
One-dimensional Z-scheme TiO<sub>2/WO<sub>3 composite nanofibres for enhanced photocatalytic activity of hydrogen production Open
TiO2/WO3 composite nanofibres were fabricated by electrospinning and calcine. The as-prepared composite nanofibes were characterised by scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, X-ray d…
View article: One-dimensional Z-scheme TiO<SUB align="right">2/WO<SUB align="right">3 composite nanofibres for enhanced photocatalytic activity of hydrogen production
One-dimensional Z-scheme TiO<sub>2/WO<sub>3 composite nanofibres for enhanced photocatalytic activity of hydrogen production Open
TiO2/WO3 composite nanofibres were fabricated by electrospinning and calcine. The as-prepared composite nanofibes were characterised by scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, X-ray d…
View article: Oxygen Electromigration and Energy Band Reconstruction Induced by Electrolyte Field Effect at Oxide Interfaces
Oxygen Electromigration and Energy Band Reconstruction Induced by Electrolyte Field Effect at Oxide Interfaces Open
Electrolyte gating is a powerful means for tuning the carrier density and exploring the resultant modulation of novel properties on solid surfaces. However, the mechanism, especially its effect on the oxygen migration and electrostatic cha…
View article: Mo-Terminated Edge Reconstructions in Nanoporous Molybdenum Disulfide Film
Mo-Terminated Edge Reconstructions in Nanoporous Molybdenum Disulfide Film Open
The catalytic and magnetic properties of molybdenum disulfide (MoS2) are significantly enhanced by the presence of edge sites. One way to obtain a high density of edge sites in a two-dimensional (2D) film is by introducing porosity. Howeve…
View article: Large polaron evolution in anatase TiO2 due to carrier and temperature dependence of electron-phonon coupling
Large polaron evolution in anatase TiO2 due to carrier and temperature dependence of electron-phonon coupling Open
The electronic and magneto transport properties of reduced anatase TiO2 epitaxial thin films are analyzed considering various polaronic effects. Unexpectedly, with increasing carrier concentration, the mobility increases, which rarely happ…
View article: The Mechanism of Electrolyte Gating on High-<i>T</i><sub><i>c</i></sub> Cuprates: The Role of Oxygen Migration and Electrostatics
The Mechanism of Electrolyte Gating on High-<i>T</i><sub><i>c</i></sub> Cuprates: The Role of Oxygen Migration and Electrostatics Open
Electrolyte gating is widely used to induce large carrier density modulation on solid surfaces to explore various properties. Most of past works have attributed the charge modulation to electrostatic field effect. However, some recent repo…