A5101436294- Graphene research and applications
- Advanced Photocatalysis Techniques
- Advanced Thermoelectric Materials and Devices
- 2D Materials and Applications
- Luminescence Properties of Advanced Materials
- Rare-earth and actinide compounds
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Topological Materials and Phenomena
- MXene and MAX Phase Materials
- Iron-based superconductors research
- Surface and Thin Film Phenomena
- Organic and Molecular Conductors Research
- Inorganic Chemistry and Materials
- Electrocatalysts for Energy Conversion
- Seismic Imaging and Inversion Techniques
- Hydraulic Fracturing and Reservoir Analysis
- Ammonia Synthesis and Nitrogen Reduction
- Inorganic Fluorides and Related Compounds
- Carbon and Quantum Dots Applications
- Machine Learning in Materials Science
- Advanced oxidation water treatment
- Transition Metal Oxide Nanomaterials
- Material Properties and Failure Mechanisms
- Covalent Organic Framework Applications
Henan Institute of Science and Technology
2024
Jiangsu University
2020-2024
Hefei National Center for Physical Sciences at Nanoscale
2024
University of Science and Technology of China
2023-2024
Beihang University
2019-2023
North University of China
2020
Chengdu University of Technology
2018-2019
Hunan University
2019
University of Illinois Urbana-Champaign
2010-2017
Electrons in graphene behave like Dirac fermions, permitting phenomena from high energy physics to be studied a solid state setting. A key question is whether or not these Fermions are critically influenced by Coulomb correlations. We performed inelastic x-ray scattering experiments on crystals of graphite, and applied reconstruction algorithms image the dynamical screening charge freestanding, sheet. found that polarizability fermions amplified excitonic effects, improving interactions...
The regulation of peroxymonosulfate (PMS) activation by photo-assisted heterogeneous catalysis is under in-depth investigation with potential as a replaceable advanced oxidation process in water purification, yet it remains significant challenge. Herein, we demonstrate strategy to construct polyethylene glycol (PEG) well-coupled dual-defect V
Abstract Layered IV-V-VI semiconductors have immense potential for thermoelectric (TE) applications due to their intrinsically ultralow lattice thermal conductivity. However, it is extremely difficult assess TE performance via experimental trial-and-error methods. Here, we present a machine-learning-based approach accelerate the discovery of promising candidates in this chalcogenide family. Based on dataset generated from high-throughput ab initio calculations, develop two highly...
2D magnetic semiconductors are intriguing for their great potential applications in spintronic nanodevices. Despite intensive research decades, intrinsically Janus scarce, and design guidelines remain elusive. Herein we propose new Cr2O2XY (X = Cl, Y Br/I) ferromagnets with asymmetric out-of-plane structural configurations from ab initio calculations. Abnormally, crystals Pmm2 structures derived pristine CrOX compounds dynamically metastable. By introducing novel phase transitions, generated...
We studied the Classical electromagnetically induced transparency (Cl-EIT) of a non-centrosymmetric metamaterial structure based on Dirac semimetal films (DSFs), which is polarization-insensitive and tunable. It composed square ring two U-shaped rings. By analyzing distribution intensity current, we find that Cl-EIT caused by destructive interference between resonators produce near-field coupling. As Fermi level DSFs increases, transparent window blueshifts has good linear relationship with...
A group of 56 novel stable IV-V-VI (IV=Si, Ge, Sn, Pb; V=As, Sb, Bi; VI=S, Se, Te) semiconductors has been predicted with ultralow lattice thermal conductivity between 0.28 and 2.02 W m<sup>-1 </sup>K<sup>-1</sup>, most which fall below 1 </sup>K<sup>-1</sup>.
Two-dimensional materials are considered to be promising for next-generation electronic and energy devices. However, the limited availability of 2D hinders their applications. Herein, we employed high-throughput computation discover new by cleaving bulk investigate electronic, thermoelectric, optoelectronic properties. Using our database containing 810 structures chalcogenides ABX3 (A or B = Al, Ga, In, Si, Ge, Sn, P, As, Sb, Bi; X S, Se, Te), identified 204 compounds experimental...
Hydrogen gas produced by electrolysis has been considered as an excellent alternative to fossil fuels. Developing non-noble metal catalysts with high electrocatalytic activities is effective way reduce the cost of hydrogen production. Recently, black phosphorus (BP) based materials have reported good potential electrocatalysts for evolution reaction (HER). Herein, we systematically study catalytic performance monolayer BP (phosphorene) and several chemically modified phosphorenes (N/S/C/O...
We present a refined and improved study of the influence screening on effective fine structure constant graphene, ${\ensuremath{\alpha}}^{*}$, as measured in graphite using inelastic x-ray scattering. This followup to our previous [J. P. Reed et al., Science 330, 805 (2010)] was carried out with two times better energy resolution, five momentum an experimental setup lower background. compare results random-phase approximation (RPA) calculations evaluate relative importance interlayer...
Black phosphorus has attracted great research interest due to its numerous applications in electronic devices, optoelectronic energy storage, and so on. Compared with the majority of two-dimensional materials, black possesses a unique property---its strong in-plane anisotropy. All properties reported far, including effective mass, electron mobility, light absorption, thermal conductivity, on, have shown anisotropy basal plane. This property renders not achievable other materials. In this...
LaAlO3 powders are prepared by coprecipitation of La(OH)3 and Al(OH)3, followed solid state reaction method or molten salt synthesis method. The crysatlline phase evolution, micro morphology luminescence properties the calcined products systematically studied XRD, SEM/EDX fluorescence spectroscopy. results show that with high purity could be obtained at 1000°C/3h help melton Na2SO4, however, impurities exist in under same calcination condition. as sub-micrometer doped Eu3+ ion two dominant...
Water electrolysis via hydrogen evolution reaction (HER) is a promising approach in the production of hydrogen. In spite its unique physical and chemical properties, there are few reports about black arsenic (b-As) as catalyst for HER. Our first-principles calculations show that doping could play an important role affecting catalytic properties b-As. Among different dopants studied, O atom most likely to be embedded into b-As lattice. The OAs atoms or clusters tune Fermi level, increase...
Three new stable semiconducting Ge–Sb–Te monolayers exhibit high visible-light absorbance (10 5 –10 6 cm −1 ) and photovoltaic efficiency (26–30% at 0.1 μm), considerably larger than the currently dominant commercial semiconductor Si.
Electron correlation in graphene is unique because of the interplay between Dirac cone dispersion π electrons and long-range Coulomb interaction. Because zero density states at Fermi level, random phase approximation predicts no metallic screening long distance low energy, so one might expect that should be a poorly screened system. However, empirically weakly interacting semimetal, which leads to question how electron correlations take place different length scales. We address this by...
Building of an acid-chromic luminescent lanthanide metallogel for time-dependent information encryption and anti-counterfeiting.
Abstract Novel two-dimensional thermoelectric materials have attracted significant attention in the field of due to their low lattice thermal conductivity. A comprehensive understanding microscopic structures is crucial for driving further optimization properties and developing novel functional materials. Here, by using situ scanning tunneling microscopy, we report atomic layer evolution surface reconstruction on cleaved material KCu 4 Se 3 first time. We clearly revealed each layer,...
Journal of Materials Informatics (JMI) is an international peer-reviewed, open access journal. The journal provides a platform for presentation, publication, and exchange materials informatics research, seeking to break down barriers among science engineering, data artificial intelligence. also venue presenting innovative approaches overcome the difficulties in unraveling complexity associated with numerous factors including noise, uncertainty, small amount, achieve quantum jump from knowledge.
We give a brief summary of the current status electron many-body problem in graphene. claim that graphene has intrinsic dielectric properties which should dress interactions among quasiparticles, and may explain why observation electron–electron renormalization effects been so elusive recent experiments. argue strength Coulomb be characterized by an effective fine structure constant given α⋆(k, ω)≡2.2/(k, ω), where (k, ω) is dynamical function. At long wavelengths, appears to have its...
The purpose of seismic facies analysis is to deduce the sedimentary geological bodies by analyzing characteristics response. traditional uses multi-attribute and clustering for quantitative interpretation. But selection attribute disturbed easily. At same time, data contains a lot redundant information, so direct use these date will not only slows down calculation but also affects results operation. In order solve this problem, technique based on combination sparse autoencoder (SAE) K-means...