A5049045904- Advanced Chemical Physics Studies
- Spectroscopy and Laser Applications
- Atmospheric Ozone and Climate
- Quantum, superfluid, helium dynamics
- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Spectroscopy and Quantum Chemical Studies
- Atmospheric chemistry and aerosols
- Water Quality Monitoring and Analysis
- Molecular Spectroscopy and Structure
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Antenna Design and Analysis
- Laser-induced spectroscopy and plasma
- Atmospheric and Environmental Gas Dynamics
- Thermal Radiation and Cooling Technologies
- Atomic and Molecular Physics
- Various Chemistry Research Topics
- Black Holes and Theoretical Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Image Processing Techniques and Applications
- Water Quality Monitoring Technologies
- Air Quality Monitoring and Forecasting
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
Taiyuan University of Science and Technology
2019-2024
State Key Laboratory of Molecular Reaction Dynamics
2015-2016
Dalian University
2014-2016
Dalian Institute of Chemical Physics
2014-2016
Dalian University of Technology
2014-2016
University of Chinese Academy of Sciences
2015-2016
Chinese Academy of Sciences
2014
Henan Normal University
2010-2011
A palm-sized laser spectrometer has been developed for detecting trace gases based on tunable diode absorption spectroscopy in combination with a novel double-layer toroidal cell. With the benefit of homemade electronic system and compact optical design, physical dimensions sensor are minimized to 24 × 15× 16 cm3. cell, 84 reflections 2 layers an effective path length 8.35 m, was used enhance signals gaseous species. designed implementing distributed feedback (DFB) controller, analog lock-in...
We developed a type of toroidal multi-pass cell with multi-layer patterns based on the off-axis model. The effective path length original is extended several roundtrips in comparison single-layer pattern, since inner surface more efficiently utilized. light pattern has been achieved by using simple ring surface, which easy to fabricate. exact analytical equations for design were derived vector calculations. A series numerical ray tracing simulations presented, and maximum theoretical optical...
Abstract A photoacoustic spectroscopy sensor for nitrogen dioxide (NO 2 ) detection was presented based on a high‐power broadband blue diode laser emitting at 446 nm. An optical chopper replaced by transistor logic modulation signal generated the generator to reduce mechanical noise. The limit of NO system reached 46 ppt Allan variance analysis benefit reflection‐enhanced. continuous in atmosphere 48 h implemented collaboration with an adaptive Kalman filter lessening noise measurement....
Abstract In this paper, an ultra-wideband solar absorber consisting of a four-layer structure Al 2 O 3 -TiN-Al -Ti is proposed. The proposed achieves average absorption 97.85% in the wavelength range 250–2000 nm (49.96% improvement over reference planar structure), and its bandwidth 90% even as high 1742 nm. As result symmetrical design structure, has polarization insensitivity wide-angle characteristics. particular, large process tolerance structural parameters degree universality for other...
A highly sensitive photoacoustic detection system using a differential Helmholtz resonator (DHR) combined with Herriott multipass cell is presented, and its implementation to sub-ppm level carbon dioxide (CO2) demonstrated. Through the utilization of erbium-doped optical fiber amplifier (EDFA), laser power was amplified 150 mW. Within cell, total 22 reflections occurred, contributing an impressive 33.6 times improvement in sensitivity. The normalized noise equivalent absorption coefficient...
Thin copper plate is widely used in architecture, transportation, heavy equipment, and integrated circuit substrates due to its unique properties. However, it challenging identify surface defects strips arising from various manufacturing stages without direct contact. A laser ultrasonic inspection system was developed based on the Lamb wave (LW) produced by a pulse. An all-fiber heterodyne interferometer applied for measuring signal combination with an automatic scanning system, which makes...
State-to-state quantum dynamics calculations for the H + LiH (v = 0-1, j 0) → H2 Li reactions are performed based on an ab initio ground electronic state potential energy surface (PES). Total and product state-resolved integral differential cross sections rate constants calculated. The present total 0, reaction found to be in agreement with previous literature results. Product reveal that products preferred formed their rovibrational excited states. show intensity of forward scattering...
Two new potential energy surfaces are established for the ground and first excited electronic states of LiH2(+) system, which important astrophysics-related H(+) + LiH(+) LiH reactions. The ab initio points calculated using complete active space self-consistent field multireference configuration interaction method with aug-cc-pVQZ basis set. At each state, more than 40000 calculated. spectroscopic constants diatoms topographical characters examined in detail, showing good agreement available...
Quasi-classical trajectory theory is used to study the reaction of O(3P) with H2 (D2) based on ground 3A'' potential energy surface (PES). The cross section O+H2→OH+H in excellent agreement previous result. Vector correlations, product rotational alignment parameters ⟨P2(j' · k)⟩ and several polarized-dependent differential sections are further calculated for reaction. polarization distribution exhibits different characteristics that can be ascribed motion paths PES, arising from various...
State-to-state quantum dynamic calculations for the proton transfer reaction Ne + H2+ (v = 0–2, j 0) are performed on most accurate LZHH potential energy surface, with product Jacobi coordinate based time-dependent wave packet method including Coriolis coupling. The J 0 probabilities title agree well previous results in a wide range of collision 0.2-1.2 eV. Total integral cross sections reasonable agreement available experiment data. Vibrational excitation reactant is much more efficient...
We present here a double-optimizations-of-buffer-region (DOBR) microiterative scheme for high-efficiency energy minimizations of large, flexible systems in combined quantum-mechanical/molecular-mechanical (QM/MM) calculations. In the DOBR scheme, an entire system is divided into three regions: core, buffer, and outer regions. The core region includes QM atoms MM within cutoff distance R1 to (denoted by MM1 atoms), buffer consists another R2 atoms. Each microcycle involves two steps: First,...
In the work, accurate converged theoretical simulations of Ne+HD+(v=1) reaction are presented with time-dependent wave packet (TDWP) method using potential energy surface by Lv (J. Chem. Phys. 2010, 132, 014303). particular, effect intramolecular substitution and translational collision on reactive dynamics is investigated in detail to discern mechanisms. Total state-to-state integral cross sections (ICSs) differential (DCSs) two channels derived compared over a wide range energies up 1.2...