A5053075776- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Hydraulic Fracturing and Reservoir Analysis
- Magnetic and transport properties of perovskites and related materials
- Geomechanics and Mining Engineering
- Silicon Carbide Semiconductor Technologies
- Geoscience and Mining Technology
- Advanced Condensed Matter Physics
- Natural Fiber Reinforced Composites
- Rock Mechanics and Modeling
- Sulfur Compounds in Biology
- ZnO doping and properties
- Sulfur-Based Synthesis Techniques
- Plasmonic and Surface Plasmon Research
- Acoustic Wave Resonator Technologies
- Smart Materials for Construction
- Drilling and Well Engineering
- Ga2O3 and related materials
- Wood Treatment and Properties
- Radio Frequency Integrated Circuit Design
- Multiferroics and related materials
- Reservoir Engineering and Simulation Methods
- Optical Coatings and Gratings
- Click Chemistry and Applications
- GaN-based semiconductor devices and materials
Dalian Jiaotong University
2025
Suzhou Institute of Nano-tech and Nano-bionics
2021-2024
Chinese Academy of Sciences
2022-2024
Brown University
1996-2024
Chang'an University
2021-2024
China University of Mining and Technology
2018-2023
Jiangsu Normal University
2022
Yunnan University
2021
China Building Materials Academy
2010-2017
Colorado School of Mines
2013-2016
An actively reconfigurable broadband terahertz (THz) metamaterial functional device based on the phase-change material vanadium dioxide (VO 2 ) and two-dimensional graphene is theoretically proposed demonstrated. The has excellent tolerance under oblique incidence. When VO in metallic state, Fermi energy of fixed at 0.1 eV, designed acts as a THz absorber transverse magnetic (TM) polarization mode. absorptance bandwidth exceeds 0.55 with complete absorption intensity more than 90%. In this...
A method using a low-temperature Si (LT-Si) buffer layer is developed to grow SiGe epilayer with low density of dislocations on substrate by molecular-beam epitaxy. In this method, LT-Si used release the stress layer. The samples have been investigated x-ray double-crystal diffraction and transmission electron microscopy. results indicate that effective suppress threading dislocations.
Abstract High and efficient deliverability of stimulated reservoir volume through a hydraulic fracturing treatment relies on three segments: fluid flow from matrix to the interface between fracture media, fluid-rock interaction at fracture-matrix interface, conductivity network. Thus, fluids salt exchange network are critical worth detailed investigation. Moreover, imbibition as an important EOR mechanism has been extensively studied but focus was mostly given capillary effect. However, for...
In this work, we carried out computational studies to predict the cycloaddition efficiency of strained alkynes with 2H-pyran-2-one and its three sulfur-containing analogues: 2H-pyran-2-thione, 2H-thiopyran-2-one, 2H-thiopyran-2-thione. It was predicted that decreased aromaticity substrate would yield higher reactivity. Experimental confirmed calculation results, 2H-pyan-2-thiones were found be most reactive substrates. This reaction proceeded effectively in aqueous buffers cellular...
We performed dry oxidation on n-type silicon carbide (SiC), followed by annealing in diluted N2O, and subsequently fabricated MOS structures. The study aimed to investigate the impact of different times trap charges near SiC/SiO2 interface reliability gate dielectric. Capacitance-voltage (C-V) current-voltage (I-V) measurements revealed that increasing time with N2O effectively reduces density electron traps interface, mitigates drift flat-band voltage enhances oxide breakdown field...
Reactive sulfane sulfur species such as persulfides (RSSH) and H2S2 are important redox regulators closely linked to H2S signaling. However, the study of these is still challenging due their instability, high reactivity, lack suitable donors produce them. Herein we report a unique compound, 2H-thiopyran-2-thione sulfine (TTS), which can specifically convert HSOH, then in presence excess H2S. Meanwhile, reaction product (TT) be oxidized reform TTS by biological oxidants. The mechanism studied...
Abstract Hydrocarbon production decline behaviors in low permeability reservoirs and conventional are significantly different; such a way that high initial rate is usually observed for short period tight formation wells, then the well productivity drops dramatically. The rapid shale wells has strong relationship with loss of rock matrix reservoir conductivity, resulting from dissipation pore pressure during depletion. This paper presents experimental studies stress-dependent compaction its...
Rock burst is a typical dynamic disaster in deep underground coal mining. Based on the support problems of roadways fully mechanized caving face 401111 Hujiahe Coal Mine suffering from rock Shaanxi Province China, failure law and influencing factors surrounding roadway are analyzed. The results show that deformation shows characteristics elastic, plastic transformation, rheology, expansion. At same time, it has roadway, such as fast speed, long duration, asymmetric deformation, large loose...
In this work we studied the reactions of benzothiazole sulfones and sulfoxides toward reactive sulfur species. The reaction thiols with produces sulfinic acids (RSO2H), which can further react sulfane sulfurs to form thiosulfonic (RSO2SH). This was used design fluorescent sensors for hydrogen polysulfides. sulfenic (RSOH), undergo fast intramolecular cyclization be thiol-triggered sensors.
A mid-infrared broadband absorber with high visible light transmittance is proposed in this paper. The composed of layered ITO nanorod arrays increasing angles fabricated by oblique angle deposition technique. experimental results show that the average reaches 80% 400-800 nm band and integrated absorption 82.9% 3-5 µm band, when QCM thickness first layer film 100 θ 10°, heights second to fifth layers nanorods are all 330 nm, their 55°, 68°, 80°, 87°, respectively. attributed gradient...
The traditional intelligent algorithms for the selected harmonic elimination pulse-width modulation (SHEPWM) of multilevel converters provide low convergent rate and accuracy solutions when solving quarter-wave symmetry nonlinear equations. To obviate this problem obtain a better modulating performance, an improved imperialist competition algorithm is proposed. proposed enhances global search ability by using moving imperialists. Also, novel type particles, named independent countries, are...
An unprecedented intramolecular [4 + 2] tetrazine-olefin cycloaddition with α,β-unsaturated substrates was discovered. The reaction produces unique coumarin-dihydropyridazine heterocycles that exhibited strong fluorescence large Stokes shifts and excellent photo- pH-stability. This property can be used for analysis. rate of found to solvent dependent determined using experimental data a kinetic modeling software (COPASI) as well DFT calculations (k 1 = 0.64 ± 0.019 s-1 4.1 s-1,...
Abstract Permeability in tight sands and shale formations is a critical property that determines well performance, completion methods field development strategies. Obtaining reliable permeability values these reservoirs challenging. Ultra low very strong stratification or heterogeneity the require conducting long duration tests at multiple locations to obtain complete reservoir characterization. Because of characteristics, existing tools work for conventional may not deliver results. The...