A5004047857- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Spectroscopy and Laser Applications
- Laser-Matter Interactions and Applications
- Advanced Chemical Physics Studies
- Laser-induced spectroscopy and plasma
- Laser-Plasma Interactions and Diagnostics
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- Mass Spectrometry Techniques and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Atomic and Molecular Physics
- Laser Design and Applications
- Advanced Fiber Laser Technologies
- ZnO doping and properties
- Air Quality and Health Impacts
- Minerals Flotation and Separation Techniques
- Spectroscopy and Quantum Chemical Studies
- Air Quality Monitoring and Forecasting
- Clay minerals and soil interactions
- Gas Sensing Nanomaterials and Sensors
- Geometry and complex manifolds
- Coal and Its By-products
Huazhong University of Science and Technology
2025
Tongji Hospital
2025
Dalian University
2017-2025
Dalian University of Technology
2017-2025
Shanghai Institute of Optics and Fine Mechanics
2025
Fudan University
2024
Zhejiang University of Technology
2024
Anhui Institute of Optics and Fine Mechanics
2014-2023
Chinese Academy of Sciences
2014-2023
Guangzhou University
2023
We demonstrate a technique that uses high-order harmonic generation in molecules to probe nuclear dynamics and structural rearrangement on subfemtosecond time scale. The chirped nature of the electron wavepacket produced by laser ionization strong field gives rise similar chirp photons emitted upon electron-ion recombination. Use this light allows information about be gained with 100-attosecond temporal resolution, from excitation an 8-femtosecond pulse, single shot. Measurements molecular...
Controlled synthesis of Au nanoparticles with adjustable sizes (10−50 nm) and narrow size distributions (<10% in standard deviation) was realized by reducing hydrochloroauric acid α-cyclodextrin (α-CD) an alkaline aqueous solution, which very simple "green". It revealed that a proper pH essential to the formation stable dispersions nonaggregated higher would lead welding into one-dimensional (1D) wires or three-dimensional (3D) aggregates. Moreover, 1D assembly α-CD-capped nanochains readily...
Controlled synthesis of well-defined planar Au nanodendrites with a symmetric single-crystalline structure consisting trunks and side branches grown along the 211 directions was realized by reducing chloroauric acid in aqueous mixed solutions dodecyltrimethylammonium bromide (DTAB) beta-cyclodextrin (beta-CD). It has been revealed that formation supramolecular complexes DTAB beta-CD due to host-guest interaction is indispensable for fabrication these unique nanodendrites, proper CD-to-DTAB...
As a saturable absorption material, the heterostructure with van der Waals structure has been paid much attention in material science. In general, heterogeneous combination is able to neutralize, or even exceed, individual material's advantages some aspects. this paper, which describes magnetron sputtering deposition method, tapered fiber coated by MoS2-WS2 heterostructure, and absorber (SA) fabricated. The modulation depth of prepared SA measured be 19.12%. Besides, theoretical calculations...
We describe a complete technological system at Imperial College London for Attosecond Science studies. The comprises few-cycle, carrier envelope phase stabilized laser source which delivers sub 4 fs pulses to vibration-isolated attosecond vacuum beamline. beamline is used the generation of isolated in extreme ultraviolet (XUV) kilohertz repetition rates through laser-driven high harmonic gas targets. incorporates: interferometers producing pulse sequences pump-probe studies; facility...
Oxalic acid and dimethylamine are the most common organic base in atmosphere, recognized as significant precursor species atmospheric new particle formation.
Controllable self-assembly of uniform star-shaped PbS nanocrystals with six symmetric ⟨100⟩-oriented horns into highly ordered structures including close-packed arrays and patterned was realized by evaporation-induced assembly routes. First, large-area three-dimensional (3D) two-dimensional (2D) hexagonal (hcp) nanostars were assembled on clean Si substrate drop coating vertical deposition, respectively. Then, using monolayer colloidal crystals (MCC) inverted MCC (IMCC) as the template, a...
The temperature effects could contribute to the variation of relative populations isomers, thus dependence thermodynamic properties is an important parameter understand roles specific nucleation mechanisms at various atmospheric temperatures.
Ammonia and amines are important common trace atmospheric species that can enhance new particle formation (NPF) in the Earth's atmosphere. However, synergistic effect of these two bases involving nucleation is still lacking. We studied most stable geometric structures thermodynamics quaternary (NH3)(CH3NH2)(H2SO4) m(H2O) n ( m = 1-3, 0-4) clusters at PW91PW91/6-311++G(3df,3pd) level theory for first time. find proton transfer from H2SO4 molecule to CH3NH2 easier than NH3 free or hydrated...
Herein, through a morphology-inherited annealing treatment of hollow Fe-doped MOF-5 octahedron as the self-sacrificing template, we report synthesis concave ZnFe2O4 octahedral nanocages sensing materials, which exhibited high performance, including unprecedented excellent sensitivity, good selectivity, and cyclic stability at ultralow working temperature (120 °C).
Strong third-order harmonic (TH) emission is observed with a conversion efficiency higher than 10(-3) from plasma channel formed by self-guided femtosecond laser pulses propagating in air. The main characteristics of TH various conditions and the phase-matching condition between fundamental wave are investigated. An optimized found, under which maximized. Our experimental results show that radiation ultraviolet wavelength range makes major attribution to emission, whereas effects self-phase...
Abstract BACKGROUND: Fusarium head blight caused by Gibberella zeae is an important disease of wheat and barley because it reduces grain yield quality results in the contamination with mycotoxins. Recent studies have shown that carbendazim resistance field strains G. not mutation β‐tubulin gene (β 1 tub ), which case other filamentous fungi, but fungicide greatly increased deletion β . The aim present study was to clarify function its role artificial operation. RESULTS: Deletion reduced...
Exploration of the low-lying structures atomic or molecular clusters remains a fundamental problem in nanocluster science. Basin hopping is typically employed conjunction with random motion, which perturbation local minimum structure. We have combined two different sampling technologies, "random sampling" and "compressed sampling", to explore potential energy surface clusters. used method study water, nitrate/water, oxalate/water cluster systems at MP2/aug-cc-pVDZ level theory. An isomer...
Bimetallic sulfides coated by carbon hollow dodecahedrons were synthesized from bimetallic ZIFs as precursors and exhibited enhanced electrochemical performance supercapacitors.
China has initiated various dedicated policies on clean energy substitution for polluting fossil-fuels since the early 2010s to alleviate severe carbon emissions and environmental pollution accelerate transformation. Using autoregressive integrated moving average (ARIMA) regression, we project potentials of substituting coal oil with different production sectors in toward year 2030. Based projections, a dynamic multi-sectoral computable general equilibrium model, CHINAGEM, is employed...
The cantilever-enhanced fiber-optic photoacoustic (PA) sensor (FOPAS) has the advantages of intrinsic safety, small size, and high sensitivity. However, resonance frequency FOPAS is easily affected by temperature, which leads to gas concentration measurement errors. Herein, with tracking presented improve stability detection. A gold-plated silicon wafer reflects excitation light double-enhance second harmonic (2f) PA signal resulting from absorption. excited incident on cell wall, solid...