A5100723969- Molecular Sensors and Ion Detection
- Spectroscopy and Chemometric Analyses
- Advanced Memory and Neural Computing
- Metal-Organic Frameworks: Synthesis and Applications
- Luminescence and Fluorescent Materials
- Education, Safety, and Science Studies
- Analytical Chemistry and Sensors
- Physical Unclonable Functions (PUFs) and Hardware Security
- Advanced Fiber Laser Technologies
- Sensor Technology and Measurement Systems
- Education and Learning Interventions
- Educational Research and Pedagogy
- Laser-Matter Interactions and Applications
- Semiconductor Lasers and Optical Devices
- DNA and Biological Computing
- Science Education and Pedagogy
- Target Tracking and Data Fusion in Sensor Networks
- Neural Networks and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Robotics and Sensor-Based Localization
- Educational Strategies and Epistemologies
- Remote Sensing and Land Use
- Photonic and Optical Devices
- Chaos-based Image/Signal Encryption
- Infrared Target Detection Methodologies
Nankai University
2024
Henan Institute of Science and Technology
2023
Jiangsu Normal University
2015-2020
Jilin University
2015-2017
University of Science and Technology of China
2002
Institute of Optics and Electronics, Chinese Academy of Sciences
2001
A novel cadmium-based metal–organic framework (MOF) material with dual-emission signals has been constructed that can act as the first example of MOF-implicated ratiometric sensor for mercury(II) in pure water a fast response, high selectivity, and sensitivity. The sensing mechanism is also discussed.
Physically unclonable function (PUF) methods have high security, but their wide application is limited by complex encoding, large database, advanced external characterization equipment, and complicated comparative authentication. Therefore, we creatively propose the physically holographic encryption anticounterfeiting based on light propagation of medium fluorescent labels. As far as know, this first method with a fluorescence property. The proposed reduces above requirements traditional PUF...
A europium(<sc>iii</sc>)-based MOF as an efficient dual sensor for acetone and Fe<sup>3+</sup> detection, the sensing mechanism of both is discussed.
Citrus peels are rich in bioactive compounds such as vitamin C and extraction of is a good strategy for citrus peel recycling. It essential to evaluate the levels before reuse. In this study, near-infrared (NIR)-based method was proposed quantify content rapid way. The spectra 249 912-1667 nm range were acquired, preprocessed, then related measured values using linear partial least squares (PLS) algorithm, indicating that normalization correction (NC) more suitable spectral preprocessing...
Two new cerium-based luminescent metal–organic complexes (MOCs), Ce–BBAS and Ce–TBAS, were achieved via self-assembly of two three additional free amide-functionalized ligands cerium(III) nitrate, respectively. These MOCs exhibit different opening size inner cavities. The smaller triple-stranded helicate exhibits high selectivity toward aspartic acid (Asp) over other natural amino acids, with the detection limit ca. 0.26 μM, providing first artificial receptor that can specifically...
For the common measurement and control system of a scanning grating spectrometer, use an analog lock-in amplifier requires complex circuitry sophisticated debugging, whereas digital places high demand on calculation capability storage space. In this paper, simplified based averaging absolute values within complete period is presented applied to spectrometer. The was implemented low-cost microcontroller without multipliers, got rid reference signal specific configuration sampling frequency....
We report on a novel type of h-shaped pulse with femtosecond substructures from linear-cavity semiconductor saturable-absorber mirror mode-locked thulium-doped fiber laser. It yields stable nanosecond pulse-train envelope width ranging 880 ps to 1.41 ns typical substructure duration around 440 fs. The obtained is noise-like strong robustness pump power changes and environmental perturbation. can also operate in the harmonic mode-locking regime. scheme makes structure compact stable, obtain...
Scanning near-infrared (NIR) spectrometers commonly employ analog lock-in amplifiers for demodulation that require complex circuitry and are sensitive to electromagnetic interference. Here, a new sampling system based on digital phase-sensitive detection is reported used quadrature algorithm establish the frequency as an integral multiple of four times optical signal frequency. A programmable logic device was control analog-to-digital converter. processor receive data, complete calculations,...
When a lock‐in amplifier was employed in scanning near‐infrared spectrometer, there the problem of low signal‐to‐noise ratio (SNR) spectra. This study investigates impact unstable measured signal frequency amplifier. The analysis concludes that when and reference are not equal due to fluctuations, amplitude detection results inaccurate change periodically with initial phase signal. According results, zero‐phase method is designed where judged guarantee starting at position. experimental...
For the scanning near-infrared spectrometer, employments of traditional digital demodulation algorithms require that sampling frequency is an integral multiple measured signal frequency. However, unstable, and a fixed value in which affects accuracy amplitude results. To improve signal-to-noise ratio spectra, this paper proposes improved algorithm based on correction. Through theoretical analysis, simulations, experiments, correction was compared with average absolute complete period. The...
The corner is an important local feature of the image. This paper proposes a new algorithm for detection by multi-feature-intensity and edge points. A fast adaptive SUSAN principle based on gray-level presented firstly detecting candidate corners. improved method can detect features in different contrast images automatically through self-adjust threshold, which determined intensity gradient magnitude. To corners blurry edges, would include some points as result reducing threshold. After...
The mechanism of conventional feedforward neural networks is discussed from the viewpoint pattern recognition using piecewise linear division (PLD). decisive factor first hidden layer emphasized. It pointed out that in elements provide a group hyperplanes to cut space and free influence other layers. role layers organize subspaces satisfy demands for classification. PLD provides not only fast method determine connecting weight sets, but also can establish structure network according...