A5100369087- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Nuclear physics research studies
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum, superfluid, helium dynamics
- Black Holes and Theoretical Physics
- Advanced NMR Techniques and Applications
- Physics of Superconductivity and Magnetism
- Health disparities and outcomes
- Ferroelectric and Piezoelectric Materials
- Electronic and Structural Properties of Oxides
- Multiferroics and related materials
- Graphene research and applications
- Suicide and Self-Harm Studies
- Atomic and Molecular Physics
- High-pressure geophysics and materials
- Mental Health Treatment and Access
- Thermal Radiation and Cooling Technologies
- Advanced Chemical Physics Studies
- Intergenerational Family Dynamics and Caregiving
- Peptidase Inhibition and Analysis
- Medical Imaging Techniques and Applications
- Superconducting Materials and Applications
- Advanced Radiotherapy Techniques
Hubei University of Automotive Technology
2025
Sun Yat-sen University
2005-2025
Peking University
2015-2024
Fudan University
2024
Zhongshan Hospital
2024
First Hospital of Xi'an
2024
Xian Central Hospital
2024
First Affiliated Hospital of Hebei Medical University
2024
Hebei Medical University
2024
Beijing Jishuitan Hospital
2022-2024
The inherent trade-off between permeability and selectivity has constrained further improvement of passive linear force-electric conversion performance in nanofluidic pressure sensors. To overcome this limitation, a 3D membrane with high mechanical strength utilizing aramid nanofibers/carbon nanofiber (ANF/CNF) dual crosslinking is developed. Due to the abundant surface functional groups CNF ANF, large-scale integrated exhibits advantages flux, porosity, short ion transport path,...
We perform a coupled-channel study of the possible deuteron-like molecules with two heavy flavor quarks, including systems ${D}^{(*)}{D}^{(*)}$ double charm, ${\overline{B}}^{(*)}{\overline{B}}^{(*)}$ bottom, and ${D}^{(*)}{\overline{B}}^{(*)}$ both charm within one-boson-exchange potential model. In our study, we take into account $S\mathrm{\text{\ensuremath{-}}}D$ mixing which plays an important role in formation loosely bound deuteron, particularly, effect space. According to results,...
Owing to the broken translational symmetry at dislocations, a strain gradient naturally exists around dislocation cores and can significantly influence electrical mechanical properties. We use aberration corrected scanning transmission electron microscopy directly measure flexoelectric polarization (∼28 μC cm^{-2}) in SrTiO_{3}. The charges interact with nonstoichiometric thus impact activities. Our findings help us understand properties of dislocations perovskite, providing new insights...
A novel nanostructure comprised of Sb<sub>2</sub>O<sub>3</sub>/Sb@graphene NPs anchored on a carbon sheet network is reported, with excellent cycling stability, long cycle life and good rate capability as sodium ion battery anode.
After constructing the possible ${J}^{P}={0}^{\ensuremath{-}}$, ${0}^{+}$, ${1}^{\ensuremath{-}}$, and ${1}^{+}$ $QQ\overline{q}\overline{q}$ tetraquark interpolating currents in a systematic way, we investigate two-point correlation functions extract corresponding masses with QCD sum rule approach. We study $QQ\overline{q}\overline{q}$, $QQ\overline{q}\overline{s}$, $QQ\overline{s}\overline{s}$ systems various isospins $I=0$, $1/2$, 1. Our numerical analysis indicates that of doubly...
Recently, the LHCb Collaboration reported three ${P}_{c}$ states in $J/\ensuremath{\psi}p$ channel. We systematically study mass spectrum of hidden charm pentaquark framework an extended chromomagnetic model. For $nnnc\overline{c}$ with $I=1/2$, we find that (i) lowest state is ${P}_{c}(4327.0,1/2,1/{2}^{\ensuremath{-}})$ [We use ${P}_{c}(m,I,{J}^{P})$ to denote pentaquark], which corresponds ${P}_{c}(4312)$. Its dominant decay mode ${\mathrm{\ensuremath{\Lambda}}}_{c}{\overline{D}}^{*}$....
How do protons and neutrons bind to form nuclei? This is the central question of ab initio nuclear structure theory. While answer may seem as simple fact that forces are attractive, full story more complex interesting. In this work we present numerical evidence from lattice simulations showing nature near a quantum phase transition, zero-temperature transition driven by fluctuations. Using effective field theory, perform Monte Carlo for systems with up twenty nucleons. For even equal numbers...
Stacking order has a strong influence on the coupling between two layers of twisted bilayer graphene (BLG), which in turn determines its physical properties. Here, we report investigation interlayer epitaxially grown single-crystal 30°-twisted BLG Cu(111) at atomic scale. The stacking and morphology is controlled by rationally designed two-step growth process, that is, thermodynamically nucleation kinetically growth. crystal structure (30°-tBLG) determined to have quasicrystal-like symmetry....
In this work, we systematically study the mass spectrum of fully heavy tetraquark in an extended chromomagnetic model, which includes both color and interactions. Numerical results indicate that energy level is mainly determined by interaction, favors color-sextet $\ket{(QQ)^{6_{c}}(\bar{Q}\bar{Q})^{\bar{6}_{c}}}$ configuration over color-triplet $\ket{(QQ)^{\bar{3}_{c}}(\bar{Q}\bar{Q})^{3_{c}}}$ one. The interaction mixes two configurations gives small splitting. ground state always...
2D metal carbides and nitrides (MXene) are promising candidates for electromagnetic (EM) shielding, saturable absorption, thermal therapy, photocatalysis owing to their excellent EM absorption. The plasmon resonances in metallic MXene micro/nanostructures may play an important role enhancing the absorption; however, contribution has not been determined due lack of a precise understanding its behavior. Here, use high-spatial-resolution electron energy-loss spectroscopy measure dispersion...
Abstract Ab initio calculations have an essential role in our fundamental understanding of quantum many-body systems across many subfields, from strongly correlated fermions 1–3 to chemistry 4–6 and atomic molecular 7–9 nuclear physics 10–14 . One the primary challenges is perform accurate for where interactions may be complicated difficult chosen computational method handle. Here we address problem by introducing approach called wavefunction matching. Wavefunction matching transforms...
There has been important experimental progress in the sector of heavy baryons past several years. We study strong decays $S$-wave, $P$-wave, $D$-wave, and radially excited charmed using $^{3}P_{0}$ model. After comparing calculated decay pattern total width with available data, we discuss possible internal structure quantum numbers those observed recently.
Objective: Depression is a common mental disorder in older adults. We examined the prevalence and risk factors for depression adults Beijing area. Method: used data from cross-sectional survey conducted July 2006 Beijing. As part of national Chinese adults, 2002 were interviewed. The 15-item Geriatric Scale was to assess depression. Demographics as well other personal information also collected. Results: Among 13.01% categorized depressed. Prevalence rates rural urban 26.63% 10.79%,...
We reinvestigate the possibility of $X(3872)$ as a $D{\overline{D}}^{*}$ molecule with ${J}^{PC}={1}^{++}$ within framework both one-pion-exchange model and one-boson-exchange model. After careful treatment $S$-$D$ wave mixing, mass difference between neutral charged $D({D}^{*})$ mesons coupling pair to ${D}^{*}{\overline{D}}^{*}$, loosely bound molecular state emerges quite naturally large isospin violation in its flavor function. For example, isovector component is 26.24% if binding energy...
Objectives To determine the association between sensory impairment and dementia in Chinese older adults. Design Cross‐sectional. Setting Older adults 31 provinces of China. Participants Individuals aged 65 (N = 250,752). Measurements Psychiatrists ascertained based on International Classification Diseases, 10th Revision . Sensory was measured as only hearing impairment, vision combined (combined impairment). Hearing defined greater than 40 dB loss better ear according to standard World...
Background Electric bike (E-bike)-related deaths have been increasing rapidly in China and such injuries may be partly attributable to unsafe riding practice. Objectives To describe potentially behaviours among electric bikers (E-bikers) investigate factors influencing these practices China. Methods In September 2012, a cross-sectional observation study including speed measurement component was conducted Wuzhong (an urban district) Zhangjiagang (a rural of Suzhou, Jiangsu Province, Hand-held...
Oxide-based resistive switching devices, including ferroelectric tunnel junctions and resistance random access memory, are promising candidates for the next-generation non-volatile memory technology. In this work, we propose a ferroionic junction to realize giant electroresistance. It functions as at low state Schottky high state, due interface engineering through field-induced migration of oxygen vacancies. An extremely large electroresistance with ON/OFF ratios 5.1×107 room temperature...
How does nuclear binding emerge from first principles? Our current best understanding of forces is based on a systematic low-energy expansion called chiral effective field theory. However, recent {\it ab initio} calculations structure have found that not all theory interactions give accurate predictions with increasing density. In this letter we address the reason for problem and steps toward solution. Using lattice simulations, deduce minimal interaction can reproduce ground state...
We extend the chromomagnetic model by further considering effect of color interaction. The effective mass parameters between quark pairs (${m}_{qq}$ or ${m}_{q\overline{q}}$) are introduced to account for both masses and interaction two quarks. Using experimental hadrons, pair determined light light-heavy pairs. Then heavy ($cc$, $cb$, $bb$) estimated based on simple assumption. calculate all doubly triply heavy-quark baryons. newly discovered charmed baryon...
Abstract The fast development of high-resolution electron microscopy (EM) demands a background-noise-free substrate to support the specimens, where atomically thin graphene membranes can serve as an ideal candidate. Yet preparation robust and ultraclean EM grids remains challenging. Here we present polymer- transfer-free direct-etching method for batch fabrication through membrane tension modulation. Loading samples on such enables detection single metal atoms atomic-resolution imaging iron...
The introduction of dislocations is a recently proposed strategy to tailor the functional and especially electrical properties ceramics. While several works confirm clear impact on conductivity, some studies raise concern in particular when expanding dislocation arrangements beyond geometrically tractable bicrystal interface. Moreover, lack complete classification pertinent characteristics complicates systematic discussion hampers design dislocation-modified conductivity. We proceed by...
In 2012, we investigated the possible molecular states composed of two charmed mesons [Phys.Rev. D 88, 114008 (2013), arXiv:1211.5007 [hep-ph](2012)]. The $D^*D$ system with quantum numbers $I(J^P)=0(1^+)$ was found to be a good candidate loosely bound state. This state is very close threshold binding energy around 0.47 MeV. prediction confirmed by new LHCb observation $T_{cc}^+$ [see Franz Muheim's talk at European Physical Society conference on high physics 2021].
We perform a systematic study of the possible loosely bound states composed two charmed baryons or baryon and an anticharmed within framework one-boson-exchange model. consider not only $\ensuremath{\pi}$ exchange but also $\ensuremath{\eta}$, $\ensuremath{\rho}$, $\ensuremath{\omega}$, $\ensuremath{\phi}$, $\ensuremath{\sigma}$ exchanges. The $S\ensuremath{-}D$ mixing effects for spin triplets are taken into account. With derived effective potentials, we calculate binding energies rms radii...