A5115599293- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Advanced materials and composites
- Luminescence Properties of Advanced Materials
- Advanced ceramic materials synthesis
- Metal and Thin Film Mechanics
- Aluminum Alloys Composites Properties
- MXene and MAX Phase Materials
- Neutrino Physics Research
- Boron and Carbon Nanomaterials Research
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Chalcogenide Semiconductor Thin Films
- Particle Detector Development and Performance
- Solid State Laser Technologies
- Intermetallics and Advanced Alloy Properties
- Phase-change materials and chalcogenides
- 2D Materials and Applications
- Photorefractive and Nonlinear Optics
- Inorganic Fluorides and Related Compounds
- Superconducting Materials and Applications
- Transition Metal Oxide Nanomaterials
- Atomic and Subatomic Physics Research
- Nuclear physics research studies
Wuhan University
2017-2024
University of Science and Technology of China
2023-2024
State Grid Corporation of China (China)
2024
Hefei National Center for Physical Sciences at Nanoscale
2023-2024
Institute of High Energy Physics
2021-2024
Beijing Shijingshan Hospital
2021-2024
Soochow University
2024
Xi'an Shiyou University
2017-2023
University of Münster
2022-2023
Henan University of Science and Technology
2022
Novel physical phenomena can emerge in low-dimensional nanomaterials. Bulk MoS2, a prototypical metal dichalcogenide, is an indirect bandgap semiconductor with negligible photoluminescence. When the MoS2 crystal thinned to monolayer, however, strong photoluminescence emerges, indicating direct transition this d-electron system. This observation shows that quantum confinement layered materials like provides new opportunities for engineering electronic structure of matter at nanoscale.
Multiband convergence has attracted significant interest due to its positive effects on further improving thermoelectric performance. However, the current research mainly focuses two- or three-band in lead chalcogenides through doping and alloying. Therefore, exploring a new strategy facilitate more-band instructive significance practical value research. Herein, we first propose high-entropy achieve four-band for optimizing Taking AgSbPbSnGeTe5 as an example, found that emergence of occurs...
We present a study of the decays B^{0,+} --> J/psi pi^+ pi^- pi^0 K^{0,+}, using 467 10^6 BBbar pairs recorded with BABAR detector. evidence for decay mode X(3872) omega, product branching fractions B(B^+ X(3872)K^+) B(X(3872) omega) =[0.6\pm0.2\stat \pm 0.1\syst ] 10^{-5}, and B(B^0 X(3872)K^0) =[0.6\pm0.3\stat 10^{-5}. A detailed mass distribution from favors negative-parity assignment.
We present a study of resonances in exclusive decays $B$ mesons to ${\overline{D}}^{(*)}{D}^{(*)}K$. report the observation $B\ensuremath{\rightarrow}{\overline{D}}^{(*)}{D}_{s1}^{+}(2536)$ where ${D}_{s1}^{+}(2536)$ is reconstructed ${D}^{*0}{K}^{+}$ and ${D}^{*+}{K}_{S}^{0}$ decay channels. also $B\ensuremath{\rightarrow}\ensuremath{\psi}(3770)K$ $\ensuremath{\psi}(3770)$ ${\overline{D}}^{0}{D}^{0}$ ${D}^{\ensuremath{-}}{D}^{+}$. In addition, we an enhancement for...
Abstract The Ge 2 Sb Te 5 alloy has served as the core material in phase-change memories with high switching speed and persistent storage capability at room temperature. However widely used, this composition is not suitable for embedded memories—for example, automotive applications, which require very working temperatures above 300 °C. Ge–Sb–Te alloys higher content, most prominently 1 (‘212’), have been studied alternatives, but their atomic structures structure–property relationships...
Binary chromium carbides display excellent wear resistance, extreme stiffness and oxidation resistance under high temperature. The influence of applied pressure on electronic structure, elastic behavior, Debye temperature hardness Cr7C3, Cr3C2 Cr23C6 have been investigated by the density functional theory (DFT) method. results reveal that lattice parameters formation enthalpy an inverse relationship with pressure, exhibited optimal structural stability. Moreover, Cr-C orbital hybridization...
A search for charmonium and other new states is performed in a study of exclusive initial-state-radiation production $D\overline{D}$ events from electron-positron annihilations at center-of-mass energy 10.58 GeV. The data sample corresponds to an integrated luminosity $384\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ was recorded by the BABAR experiment PEP-II storage ring. mass spectrum shows clear evidence $\ensuremath{\psi}(3770)$ plus structures near 3.9, 4.1, $4.4\text{...
We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element $|{V}_{\mathrm{cb}}|$ and form-factor slope ${\ensuremath{\rho}}^{2}$ in $\overline{B}\ensuremath{\rightarrow}D{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ decays based on $460\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ events recorded at $\ensuremath{\Upsilon}(4S)$ resonance with BABAR detector. are selected which hadronic decay second $B$ meson is fully...
A precise measurement of the cross section for process e+e−→K+K−(γ) from threshold to an energy 5 GeV is obtained with initial-state radiation (ISR) method using 232 fb−1 data collected BABAR detector at e+e− center-of-mass energies near 10.6 GeV. The uses effective ISR luminosity determined e+e−→μ+μ−(γ)γISR same set. corresponding lowest-order contribution hadronic vacuum polarization term in muon magnetic anomaly found be aμKK,LO=(22.93±0.18stat±0.22syst)×10−10. charged kaon form factor...
Enhanced crystal nucleation in a Sc–Sb–Te phase-change material has enabled subnanosecond switching memory devices, making cache-type nonvolatile feasible. However, the microscopic mechanisms remain to be further explored. In this work, we present systematic ab initio study of relevant parent compounds, namely, Sc2Te3 and Sb2Te3. Despite similar bond lengths angles amorphous phases two displays much more ordered network without homopolar bonds. As result, local structural order is dominated...
In order to improve the upconversion (UC) luminescence of lanthanide-doped nanoparticles (NPs), different sized Y2O3:Tm3+, Yb3+ NPs were synthesized using Pechini type sol-gel method, and their surfaces coated with thickness SiO2 or TiO2 shells Stöber method. The results indicate that large-sized have more intense UC intensities than small-sized NPs. core-shell structures can enhance intensities. Comparing intensity noncoated NPs, SiO2-coated for sintering time 60 min coating 30, 60, 90, 120...
In order to improve the solubility of doped nanoparticles in solutions, Y(2)O(3):Tm(3+)/Yb(3+) were synthesized using Pechini-type sol-gel method, and their surfaces modified with amino or carboxylic functional groups ligand-capped ligand-exchanging methods. The characterized by transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy zeta potential (ζ), photoluminescence was studied fluorescence spectrophotometry. results indicate that upconversion amine-...
With the rapid development of modern science and industrial technology, single metals or alloys are restricted by working conditions cost. It is challenging to meet requirements for current applications. Copper (Cu)–steel bimetal composites, composed copper steel, have performances two low They drawn extensive attention worldwide been developed many scholars years. The new preparations studies promote copper–steel composites literatures also reported different applications composites. Up...
Chromium-carbide-based cermets have been widely exploited for a number of applications, particularly in petroleum engineering, the metallurgical industry, and aerospace areas, due to their unique properties, such as high hardness melting point, excellent oxidation, wear resistance at elevated temperatures. However, defects bulk Cr3C2-Ni are greater brittleness lower strength room temperature. In order increase extend service life this material, researchers carried out many explorations...
We present results from an analysis of ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{+}{\ensuremath{\rho}}^{\ensuremath{-}}$ decays using $(383.6\ifmmode\pm\else\textpm\fi{}4.2)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected by the BABAR detector at PEP-II asymmetric-energy $B$ factory SLAC. The measurements branching fraction, longitudinal polarization fraction ${f}_{L}$, and $CP$-violating parameters ${S}_{\mathrm{long}}$ ${C}_{\mathrm{long}}$ are as...