A5030488812- Advanced Chemical Physics Studies
- Fullerene Chemistry and Applications
- Atomic and Molecular Physics
- Graphene research and applications
- Carbon Nanotubes in Composites
- Boron and Carbon Nanomaterials Research
- Molecular Junctions and Nanostructures
- Synthesis and Properties of Aromatic Compounds
- Mass Spectrometry Techniques and Applications
- Surface and Thin Film Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Surface Chemistry and Catalysis
- Quantum and electron transport phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Spectroscopy and Quantum Chemical Studies
- Catalytic Processes in Materials Science
- Eicosanoids and Hypertension Pharmacology
- Advancements in Battery Materials
- Semiconductor Quantum Structures and Devices
- Metal-Organic Frameworks: Synthesis and Applications
- Astrophysics and Star Formation Studies
- Hydrocarbon exploration and reservoir analysis
- Crystallography and molecular interactions
- Semiconductor Lasers and Optical Devices
- Quantum, superfluid, helium dynamics
Yangzhou University
2018-2025
Harbin Medical University
2025
Fourth Affiliated Hospital of Harbin Medical University
2025
Boston College
2021-2024
University of California, Berkeley
2011-2024
Natera (United States)
2024
Northern Jiangsu People's Hospital
2021-2023
Tianjin University of Science and Technology
2023
Tianjin Medical University
2022
State Administration of Traditional Chinese Medicine of the People's Republic of China
2022
The use of boron nitride (BN) as a substrate for graphene nanodevices has attracted much interest since the recent report that BN greatly improves mobility charge carriers in compared to standard SiO2 substrates. We have explored local microscopic properties on using scanning tunneling microscopy. find substrates result extraordinarily flat layers display Moiré patterns arising from relative orientation and lattices. Gate-dependent dI/dV spectra exhibit spectroscopic features are sharper...
Surface effects usually become negligible on the micrometer or sub-micrometer scale due to lower surface-to-bulk ratio compared nanomaterials. In lead halide perovskites, however, their "soft" nature renders them highly responsive external field, allowing for extended depth affected by surface. Herein, taking advantage of this unique feature perovskites we demonstrate a methodology property manipulation perovskite thin films based secondary grain growth, where tuning surface induces internal...
Rational engineering of metal–organic frameworks (MOFs) with maximum exposed highly active facets for photocatalytic CO2 reduction is desirable yet remains greatly challenging. Herein, ultrathin Ti-MOF NH2-MIL-125 nanosheets are successfully fabricated through a facile and efficient approach relying on the precursors directly. Importantly, surfaces dominated by {110} facet, which has more sites than {001} {111}. In contrast conventional catalysts {001}, {110}, {111} facets, nanosheet...
Twisted bilayer graphene (tBLG) forms a quasicrystal whose structural and electronic properties depend on the angle of rotation between its layers. Here we present scanning tunneling microscopy study gate-tunable tBLG devices supported by atomically-smooth chemically inert hexagonal boron nitride (BN). The high quality these allows identification coexisting moir\'e patterns super-superlattices produced graphene-graphene graphene-BN interlayer interactions. Furthermore, examine additional...
Rechargeable Mg batteries are a promising energy storage technology to overcome the limitations inherent Li ion batteries. A critical challenge in advancing is lack of suitable cathode materials. In this work, we report design that incorporates S functionality into two-dimensional metal-organic-frameworks (2D-MOFs). This new material enables good
Large-scale $R$-matrix-with-pseudostates calculations for electron collisions with argon atoms, using a recently developed parallel version of our B-spline $R$-matrix code, are reported. The were carried out in the semirelativistic $\mathit{jK}$-coupling scheme. They intended to provide converged (with respect number coupled states) results electron-impact excitation individual target states dominant configurations $3{p}^{5}4s$, $3{p}^{5}4p$, $3{p}^{5}3d$, and $3{p}^{5}5s$ incident energies...
Abstract Helium has a unique phase diagram and below 25 bar it does not form solid even at the lowest temperatures. Electrostriction leads to formation of layer helium around charged impurities much lower pressures in liquid superfluid helium. These so-called ‘Atkins snowballs’ have been investigated for several simple ions. Here we He n C 60 + complexes with exceeding 100 via electron ionization nanodroplets doped . Photofragmentation these is measured by merging tunable narrow-bandwidth...
The $B$-spline $R$-matrix-with-pseudostates (BSR) method is employed to treat electron collisions with nitrogen atoms. Predictions for elastic scattering, excitation, and ionization are presented all transitions between the lowest 21 states of in energy range from threshold 120 eV. structure description has been further improved compared a previous BSR calculation by Tayal Zatsarinny [J. Phys. B 38, 3631 (2005)]. This change model, together inclusion large number pseudostates close-coupling...
The present work combines experimental and theoretical studies of the collision between keV ion projectiles clusters pyrene, one simplest polycyclic aromatic hydrocarbons (PAHs). Intracluster growth processes induced by collisions lead to formation a wide range new molecules with masses larger than that pyrene molecule. efficiency these is found strongly depend on mass velocity incoming projectile. Classical molecular dynamics simulations entire process—from impact (nuclear scattering)...
Nanoporous materials are of great interest in many applications, such as catalysis, separation, and energy storage. The performance these is closely related to their pore sizes, which inefficient determine through the conventional measurement gas adsorption isotherms. Nuclear magnetic resonance (NMR) relaxometry has emerged a technique highly sensitive porosity materials. Nonetheless, streamlined methods estimate size from NMR remain elusive. Previous attempts have been hindered by inverting...
With recent breakthroughs and advances in synthetic chemistry, carbon nanobelts (CNBs) have become an emerging hot topic chemistry materials science. Owing to their unique molecular structures, CNBs intriguing properties with applications materials, host–guest optoelectronics, so on. Although a considerable number of diverse forms been synthesized, no systematic nomenclature is available yet for this important family macrocycles. Moreover, little known about the detailed isomerism CNBs,...
Helium adsorbed on $\mathrm{C}_{60}{}^{+}$ and $C_{70}{}^{+}$ exhibits phenomena akin to helium graphite. Mass spectra suggest that commensurate layers form when all carbon hexagons pentagons are occupied by one He each, but the solvation shell does not close until 60 atoms $\mathrm{C}_{60}{}^{+}$, or 62 $\mathrm{C}_{70}{}^{+}$. Molecular dynamics simulations of ${\mathrm{C}}_{60}\mathrm{He}_{n}{}^{+}$ at 4 K show phase is solid. added ${\mathrm{C}}_{60}\mathrm{He}_{32}{}^{+}$ will displace...
We report highly selective covalent bond modifications in collisions between keV alpha particles and van der Waals clusters of ${\mathrm{C}}_{60}$ fullerenes. Surprisingly, $\mathrm{C}_{119}{}^{+}$ $\mathrm{C}_{118}{}^{+}$ are the dominant molecular fusion products. use dynamics simulations to show that $\mathrm{C}_{59}{}^{+}$ $\mathrm{C}_{58}{}^{+}$ ions---effectively produced prompt knockout processes with ${\mathrm{He}}^{2+}$---react rapidly form dumbbell $\mathrm{C}_{118}{}^{+}$. Ion...
Two novel cycloarene families, generalized kekulenes and clarenes, are proposed. Their structures, stability spectroscopic properties comprehensively studied using DFT calculations.
With increasing coverage, self-assembly of the fullerene derivative phenyl-C61-butyric acid methyl ester (PCBM) on Au(111) undergoes a transition from substrate-controlled to hydrogen-bond-controlled. At low coverages, PCBM nucleates exclusively at fcc areas “herringbone” reconstruction (left image). higher double rows molecules connected through hydrogen bonds are formed (right ML: monolayer. Supporting information for this article is available WWW under...
This work explores the electronic energy of CdSe nanoparticles as a function nanoparticle (NP) size and capping ligand. Differential pulse voltammetry was used to determine valence band edge NPs that are capped with three different ligands (aniline, thiophenol, phenylphosphonic acid), experimental values compared DFT calculations. These results show how position size-dependent behavior bands can be modulated by chemical nature The computations underscore highest lying filled states change...
The $B$-spline $R$-matrix (BSR) with pseudostates method is employed to treat electron collisions carbon atoms. Predictions for elastic scattering, excitation, and ionization are presented incident energies between threshold 60 eV. structure description further improved compared a previous BSR calculation by Zatsarinny et al. [Phys. Rev. A 71, 042702 (2005)]. This change in the model, together inclusion of large number close-coupling expansion, has major influence on theoretical predictions,...
Physisorption and storage of molecular hydrogen on single-walled carbon nanotube (SWCNT) various diameters chiralities are studied by means classical dynamics (MD) simulations a force field validated using DFT-D2 CCSD(T) calculations. A nonrigid model is implemented with stretching (C-C) valence angle potentials (C-C-C) formulated as Morse Harmonic cosine potentials, respectively. Our results evidence that the standard Lennard-Jones potential fails to describe H2-H2 binding energies....
Lanthanide‐based metal–organic compounds and architectures are promising systems for sensing, heterogeneous catalysis, photoluminescence, magnetism. Herein, the fabrication of interfacial 2D lanthanide‐carboxylate networks is introduced. This study combines low‐ variable‐temperature scanning tunneling microscopy (STM) X‐ray photoemission spectroscopy (XPS) experiments, density functional theory (DFT) calculations addressing their design electronic properties. The bonding ditopic linear...
Density functional theory calculations were used to investigate the mechanism of acetylene hydrochlorination separately catalyzed by un-doped B<sub>12</sub>N<sub>12</sub> and carbon-doped BN fullerene (B<sub>12−n</sub>N<sub>11+n</sub>C (<italic>n</italic> = 0, 1)).
A detailed experimental and theoretical investigation of the dynamics leading to fragmentation doubly ionized molecular thiophene is presented. Dissociation double-ionized molecules was induced by S $2p$ core photoionization ionic fragments were detected in coincidence with Auger electrons from core-hole decay. Rich observed electron-ion-ion maps exhibiting ring breaks accompanied hydrogen losses and/or migration. The probabilities various dissociation channels seen be very sensitive...
Predicting and understanding the relative stability of exohedral fullerenes is an important aspect fullerene chemistry, since experimentally formed structures do not generally follow rules that govern addition reactions or making pristine fullerenes. First-principles theoretical calculations are limited applicability due to large number possible isomeric forms, for example, more than 50 billion C60X8. Here we propose a simple model, exclusively based on topological arguments, allows one...