A5101875139- Advanced Chemical Physics Studies
- Catalytic Processes in Materials Science
- Graphene research and applications
- Orbital Angular Momentum in Optics
- Ammonia Synthesis and Nitrogen Reduction
- Spectroscopy and Laser Applications
- Hydrogen Storage and Materials
- Quantum, superfluid, helium dynamics
- Fuel Cells and Related Materials
- ZnO doping and properties
- Molecular Junctions and Nanostructures
- 2D Materials and Applications
- Near-Field Optical Microscopy
- Microfluidic and Bio-sensing Technologies
- Solar Radiation and Photovoltaics
- Copper-based nanomaterials and applications
- Electrocatalysts for Energy Conversion
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Solar and Space Plasma Dynamics
- Advanced biosensing and bioanalysis techniques
- Metamaterials and Metasurfaces Applications
- Advanced battery technologies research
- MXene and MAX Phase Materials
- Quantum and electron transport phenomena
Chinese Academy of Sciences
2015-2025
Dalian Institute of Chemical Physics
2015-2025
University of Chinese Academy of Sciences
2023-2024
Dalian University of Technology
2022
Space Engineering University
2020-2021
Shenzhen Institutes of Advanced Technology
2020
Anhui University of Finance and Economics
2020
University of Science and Technology of China
2018-2019
Dalian University
2016-2018
Shanghai Institute of Ceramics
2017
Criegee intermediates (CIs) are potentially significant oxidants and a major source of OH radicals in the troposphere. The
Chemical reactions are generally assumed to proceed from reactants products along the minimum energy path (MEP). However, straying MEP-roaming-has been recognized as an unconventional reaction mechanism and found occur in both ground first excited states. Its existence highly states is however not yet established. We report a dissociation channel produce electronically fragments, S(
We generate a new type of perfect optical vortex called the polygonal (PPOV) by combining Bessel-Gauss beam with high-order cross-phase (HOCP) at plane spatial light modulator (SLM). This is first time that HOCP applied to Fourier an field (POV) instead directly acting on itself. Experimentally, symmetrical PPOV generated, and capability asymmetric distribution demonstrated. Furthermore, we discuss influence parameters PPOV. On this basis, show novel function can adjust energy vertices while...
Increasing demand for practical applications is forcing more in-depth research into optical vortices (OVs): from the generation and measurement to shaping multi-singularity manipulation of OVs. Herein, we propose a new type phase structure called high-order cross-phase (HOCP), which can be employed modulate OVs implement polygonal simultaneously at far-field. Theoretically, investigate propagation characteristics modulated by HOCP. In experiments, achieve via HOCPs. On this basis, discuss...
The reaction of anti-CH3CHOO with H2O is a crucial atmospheric process, resulting in the end products CH3COOH + through dissociation intermediate hydroxyethyl hydroperoxide (CH3CH(HO)OOH, HEHP). Based on an accurate full-dimensional PES, we have obtained detailed dynamics information for this quasi-classical trajectory simulations. We report two mechanisms product channel: one involving direct mechanism transition state and other intriguing OH roaming mechanism. pathway proceeds via HEHP...
A first dynamical study based on an accurate full-dimensional neural network PES for the CH 2 OO + H O reaction.
The exquisite features of molecular photochemistry are key to any complete understanding the chemical processes governed by potential energy surfaces (PESs). It is well established that multiple dissociation pathways relate nonadiabatic transitions between coupled PESs. However, little detail known about how single PES determines reaction outcomes. Here we perform detailed experiments on HNCO photodissociation, acquiring state-specific correlations NH (a1Δ) and CO (X1Σ+) products. reveal a...
We constructed a new, accurate twelve-dimensional potential energy surface (PES) for ammonia dissociative chemisorption (DC) on rigid Fe(111) using the fundamental invariant-neural network fitting to large number of density functional theory data points. The DC dynamics simulations were carried out by quasi-classical trajectory (QCT) approach. At very low collision energies, molecules experienced rebounds due deep pre-transition-state adsorption well and finally decomposed around global...
The space between a two-dimensional (2D) material overlayer and metal surface can be regarded as nanoreactor, in which molecule adsorption reaction may occur. In this work, we present CO intercalation under hexagonal boron nitride (h-BN) on Ru(0001) at room temperature, observed using X-ray photoelectron spectroscopy, ultraviolet scanning tunneling microscopy. Critical factors influencing the interfacial process have been investigated, including partial pressure, h-BN coverage, oxygen...
The dissociation of ammonia on an effective catalyst is practical importance in producing clean hydrogen. In this work, accurately fitted full-dimensional potential energy surface (PES) for the dissociative chemisorption NH3 rigid Ni(111) was developed based fundamental invariant-neural network method. With aid PES full 12 dimensions, extensive quasi-classical trajectory calculations were carried out to investigate dynamics. ground vibrational state most favored at normal incidence and...
Interaction of hexagonal boron nitride (h-BN) with gases is great importance for its properties and applications. In the present work, structural changes h-BN overlayers on Pt(111) in oxidative atmospheres including O2 NO2 have been investigated by using low energy electron microscopy, Auger spectroscopy, X-ray photoelectron spectroscopy (XPS), near ambient pressure XPS. We find that islands can be intercalated oxygen 10-6 Torr at 200 °C, while intercalation full layer around °C requires...
Surface-Enhanced Raman Spectroscopy attracts great interests for its ability to detect a variety of molecules at trace level. However, the commonly used noble metal substrates suffer from high cost, poor biocompatibility and inferior stability. Some oxides have potential substitute much effort has been made improve their performance. In this paper, MoO2 nanocones were prepared self-assembled into hollow spheres. The structure exhibits an enhancement factor (EF) 3 × 107 limit detection (LOD)...
The CH2OO + H2O reaction is an important atmospheric process that leads to the formation of formic acid (HCOOH) and water via intermediate hydroxymethyl hydroperoxide (HOCH2OOH, HMHP). We investigated intricacies this by employing quasiclassical trajectory calculations on accurate, full-dimensional ab initio potential energy surface (PES). In addition direct mechanism transition state (TS), interesting roaming was found play predominant role in producing HCOOH. This pathway featured as near...
Gaseous nitrogen has a wide variety of applications in industry. Currently, is produced by energy-intensive cryogenic fractional distillation liquefied air, pressure swing adsorption (PSA), and membranes. In this paper, novel process was proposed experimentally verified for production nitrogen. process, oxygen air extracted through dense oxygen–permeable membrane, which then reacted with methane. By optimizing the methane flow rate, can produce nearly pure as well syngas (a mixture CO H2)....
The dissociative chemisorption of N2 is the rate-limiting step for ammonia synthesis in industry. Here, we investigated role initially vibrational excitation and rotational its reactivity on Fe(111) surface, based a recently developed six-dimensional potential energy surface. Six-dimensional quantum dynamics study was carried out to investigate effect incidence below 1.6 eV, due significant effects this reaction. excitations at high energies were revealed by quasiclassical trajectory...
We present observations and analysis of an X1.8 non-eruptive solar flare on 2012 October 23, which is characterized by extremely large late-phase peak seen in the warm coronal extreme-ultraviolet (EUV) emissions ($\sim$ 3 MK), with intensity over 1.4 times that main peak. The driven a failed eruption magnetic flux rope (MFR), whose strong squeeze force acting overlying structures gives rise to intense early heating loops. Based differential emission measure (DEM) analysis, it found loops...
Abstract We present observations and analysis of an X1.8 noneruptive solar flare on 2012 October 23, which is characterized by extremely large late-phase peak seen in the warm coronal extreme-ultraviolet (EUV) emissions (∼3 MK), with intensity over 1.4 times that main peak. The driven a failed eruption magnetic flux rope, whose strong squeeze force acting overlying structures gives rise to intense early heating loops. Based differential emission measure analysis, it found loops experience...