A5013623351- Fullerene Chemistry and Applications
- Astronomical Observations and Instrumentation
- Optical Systems and Laser Technology
- Advanced Measurement and Detection Methods
- Spectroscopy and Laser Applications
- Graphene research and applications
- Image and Signal Denoising Methods
- Advanced Vision and Imaging
- Cancer Genomics and Diagnostics
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Advanced Fiber Laser Technologies
- Probabilistic and Robust Engineering Design
- Reliability and Maintenance Optimization
- Genomics and Phylogenetic Studies
- Boron and Carbon Nanomaterials Research
- Image Enhancement Techniques
- Advanced Chemical Physics Studies
- Simulation and Modeling Applications
- RNA and protein synthesis mechanisms
- Tribology and Lubrication Engineering
- Risk and Safety Analysis
- Advanced Chemical Sensor Technologies
- Laser Design and Applications
- Electron and X-Ray Spectroscopy Techniques
Ocean University of China
2021-2025
Beijing University of Civil Engineering and Architecture
2025
Shanghai Jiao Tong University
2006-2024
Ministry of Education of the People's Republic of China
2023
National University of Defense Technology
2023
Shenyang Jianzhu University
2023
Chinese Academy of Sciences
2014-2022
University of Science and Technology of China
2022
State Key Laboratory of Polymer Physics and Chemistry
2022
Changchun Institute of Applied Chemistry
2022
Elastomers play an irreplaceable role in industry and daily life; however, they are usually soft susceptible to damage. In this study, skin-like poly(urethane-urea) elastomers with high mechanical strength, stretchability, elasticity, excellent damage resistance, tolerance, healability fabricated by cross-linking polycaprolactone (PCL) chains hydrogen-bond arrays. The elastomer, which is denoted as PU-ASC, has a tensile strength of ∼72.6 MPa, recovery strain ∼500%, fracture energy ∼161 kJ...
Detecting low-frequency DNA mutations hotspots cluster is critical for cancer diagnosis but remains challenging. Quantitative PCR (qPCR) constrained by sensitivity, and allele-specific restricted throughput. Here we develop a long blocker displacement amplification (LBDA) coupled with qPCR ultrasensitive multiplexed variants detection. By designing oligos to perfectly match wildtype sequences while mispairing mutants, blockers enable 14-44 nt enrichment regions which 2-fold longer than...
This paper presents an underwater high-precision line laser three-dimensional (3D) scanning (LLS) system with rotary mode, which is composed of a low illumination camera and green projector. The 3D data acquisition can be realized in the range field view 50° (vertical) × 360° (horizontal). We compensate refraction reconstruction to reduce angle error caused by light on different media surfaces impact image quality. In order verify effect effectiveness compensation algorithm, we conducted...
In this paper, a new response approximation model for quadrant detector is proposed based on BP Neural Network by employing different training algorithms. A total of 1001 data points are gathered to train and test the network. Through optimal configuration, network with 1 hidden layer 8 neurons Log-sigmoid transfer functions in determined have optimum performance. Furthermore, Levenberg-Marquardt (LM) best algorithm while case more precise than others. Besides, it shows good ability suppress...
Defective BiVO 4 with oxygen vacancies was synthesized via hydrothermal method. Oxygen modulate band structure, enhance light absorption, and create internal electric fields to boost carrier separation.
Schematic illustration of Cu<sup>2+</sup>in solution detection using a SA/MWCNTs/Nafion modified PGE.
A novel TT-type resonator was proposed for the first time, to our knowledge, realize differential photoacoustic (PA) detection trace gas measurement. The special design of allows us install microphone at resonant center acoustic field maximize use absorption-induced PA signal. To meet requirement low consumption and easy integration, resonator-based cell fabricated as a fiber-coupled module with an inner volume only 1.1 ml. For validation, integrated spectroscopy (PAS) system acetylene...
Fixed wavelength modulation spectroscopy (FWMS) featured as that is modulated around a constant value instead of dynamic scanning ramp in the standard (WMS). To eliminate influence center drift on absorption measurement FWMS system, software-based proportional–integral–derivative (PID) controller developed to lock laser at methane line 1653.72 nm for CH4 detection this study. Moreover, two crucial parameters PID, gain and integral time, are optimized improve locking performance. As result,...
The geometric and electronic structures of titanium fulleride complexes have been studied at the gradient corrected density-functional theory level by using various ${\mathrm{C}}_{60}{\mathrm{Ti}}_{x}$ $(x=1,2)$ clusters. cluster with Ti atom binding on six-ring site $({\ensuremath{\eta}}^{6})$ fullerene is shown to be lower in energy than those adsorbed either five-ring $({\ensuremath{\eta}}^{5})$ or bridge $({\ensuremath{\eta}}^{2})$ sites. bond formation for has further examined...
Purpose Noise abatement is one of the key techniques for Partial Discharge (PD) on-line measurement and monitoring. However, how to enhance efficiency PD signal noise suppression a challenging work. Hence, this study aims improve abatement. Design/methodology/approach In approach, time–frequency characteristics had been obtained based on fast kurtogram S-transform spectrum, these were used optimize parameters matching over-complete dictionary. Subsequently, self-adaptive selection atoms was...
In the wavelength modulation spectroscopy (WMS) gas detection system, laser diode is usually stabilized at a constant temperature and driven by current injection. So, high-precision controller indispensable in every WMS system. To eliminate drift influence improve sensitivity response speed, sometimes needs to be locked absorption center. this study, we develop an ultra-high stability level of 0.0005 °C, based on which new locking strategy proposed successfully lock CH4 center 1653.72 nm...
A novel self-calibrated method is proposed for wavelength modulation spectroscopy (WMS) system to improve the long-term stability gas detection. In method, absorption-induced 2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">nd</sup> harmonic normalized by an absorption-independent pulse signal. Since and signal are demodulated same lock-in amplifier, they completely homologous regardless of optical path or circuitry. As a result, influence on...
The chemical interaction between titanium and ${\mathrm{C}}_{60}$ in coevaporated titanium-fulleride films has been investigated by x-ray photoelectron spectroscopy, (XPS), absorption spectroscopy (XAS), emission spectroscopy. Two with different Ti concentrations ($x=2.1$ 3.6) a pure film were chosen this study. C $1s$ XPS analyses show binding-energy shift line-broadening effect. XAS study of ${\mathrm{Ti}}_{2.1}{\mathrm{C}}_{60}$ shows small change the ${\ensuremath{\pi}}^{*}$ resonance,...
We detect a significant angle-dependence in the core level and valence line shapes of photoelectron spectra single crystal ${\mathrm{K}}_{3}{\mathrm{C}}_{60}$. This allows identification bulk surface components data, us to explain anomalous observed for this system. The states near Fermi are associated with sample. There is strong evidence an insulating layer, which we ascribe intermolecular electron correlations. These results simplify interpretation previous, apparently conflicting observations.
Vibronic coupling in solid ${\mathrm{C}}_{60}$ has been investigated with a combination of resonant photoemission spectroscopy (RPES) and inelastic x-ray scattering (RIXS). Excitation as function energy within the lowest unoccupied molecular orbital resonance yielded strong oscillations intensity dispersion RPES, component RIXS. Reconciling these two observations establishes that vibronic this core hole excitation leads to predominantly localization excited vibrations on molecule femtosecond...
In this paper, we propose a new method to improve the position measurement accuracy for Laguerre-Gaussian beams on quadrant detector (QD). First, error effects of diameter and gap size are taken into account, compensation factor is introduced conventional formula. Then, in order reduce number parameters, concept effective radius proposed. Thus, analytical expression obtained with best fit using least square method. It verified by simulation that approach can maximum 97.4% when beam 0.95 mm;...
Abstract Detecting low‐frequency DNA mutations hotspots cluster is critical for cancer diagnosis but remains challenging. Quantitative PCR (qPCR) constrained by sensitivity, and allele‐specific restricted throughput. Here we develop a long blocker displacement amplification (LBDA) coupled with qPCR ultrasensitive multiplexed variants detection. By designing oligos to perfectly match wildtype sequences while mispairing mutants, blockers enable 14–44 nt enrichment regions which 2‐fold longer...
In view of the problems low pre-screening efficiency, a weak Raman signal, and strong fluorescence interference in detection microplastics by traditional spectroscopy, set rapid system research methods for microplastics, including imaging technology, differential spectroscopy confocal microscopic are constructed this paper. A 784/785 nm dual-wavelength laser was used as excitation light source microplastics. The sediment coastal waters Qingdao Shilaoren taken object. Polycarbonate...
The bonding between titanium atoms and ${\mathrm{C}}_{60}$ has been examined by means of resonant inelastic x-ray scattering. Using the symmetry-selection rules in scattering process symmetry orbitals involved bond formation was determined. It found that lowest unoccupied states are due to hybridization highest occupied orbital Ti orbitals. A comparison experimental theoretical results indicates six-ring site. method can be used probe metal organic molecules general.