A5019762369- Advanced Optical Sensing Technologies
- Advanced Polymer Synthesis and Characterization
- Polymer Nanocomposites and Properties
- Synthesis and properties of polymers
- CCD and CMOS Imaging Sensors
- Polymer crystallization and properties
- Liquid Crystal Research Advancements
- Analytical Chemistry and Sensors
- Ocular and Laser Science Research
- Block Copolymer Self-Assembly
- Dendrimers and Hyperbranched Polymers
- Optical Coherence Tomography Applications
- Photonic and Optical Devices
- Synthetic Organic Chemistry Methods
- Silicone and Siloxane Chemistry
- Tribology and Wear Analysis
- Polymer composites and self-healing
- Advanced Fluorescence Microscopy Techniques
- Conducting polymers and applications
- biodegradable polymer synthesis and properties
- Fuel Cells and Related Materials
- Advanced Surface Polishing Techniques
- Blockchain Technology Applications and Security
- Epoxy Resin Curing Processes
- Microbial Community Ecology and Physiology
Xidian University
2020-2025
George Brown College
2025
Beijing Information Science & Technology University
2024
Xi'an Jiaotong University
2024
Hunan Agricultural University
2022-2024
Shanghai Jiao Tong University
2019-2023
Tsinghua University
2022-2023
Beijing Advanced Sciences and Innovation Center
2023
Huazhong University of Science and Technology
2020-2022
Tianjin University
2018
In this article, a multi-event time-to-digital converter (TDC) with high conversion rate using an interpolator recycling technique is proposed. The dead time greatly reduced by reusing the coarse interpolation channel (CIC) during quantization of Start and Stop signals. A resolution achieved coarse–fine calibration-free high-linearity amplifier (TA). flash sub-TDC novel fully symmetric (FSQ) scheme proposed to implement fine interpolation, which helps improve linearity. An ultra-low static...
An analog front-end (AFE) circuit comprising an amplifier module, a peak detector, and timing discriminator has been designed to facilitate the target identification for direct time-of-flight (dToF) LiDAR. The amplitude saturation error (ASE) is compensated in this article intensity determination, which conducted based on combination of pulse width detector. Together with improved walk compensation scheme, proposed AFE can attain distance information simultaneously lower cost larger dynamic...
Terahertz (THz) wave manipulation, especially the beam deflection, plays an essential role in various applications, such as next-generation communication, space exploration, and high-resolution imaging. Current THz optical components devices are hampered by their large bulk sizes passive responses, limiting development of high-performance, miniaturized microsystems. Tunable metasurfaces offer a powerful dynamic platform for controlling propagation electromagnetic waves. In this article, we...
Abstract A series of side‐chain liquid‐crystalline (LC) homopolymers poly[6‐(4‐methoxy‐4′‐oxy‐azobenzene) hexyl methacrylate] with different degrees polymerization were synthesized by atom transfer radical (ATRP), which prepared a wide range number‐average molecular weights from 5.1 × 10 3 to 20.6 narrow polydispersities around 1.17. Thermal investigation showed that the exhibit two mesophases, smectic phase, and nematic phase‐transition temperatures increase clearly increasing weights....
To improve the accuracy and reliability of orchard spraying robots, an integrated navigation system was developed, consisting a real-time kinematic positioning-Beidou satellite (RTK-BDS) receiver, inertial measurement unit (IMU), controller, servo motors. Using loose coupling combination method, error Kalman filter algorithm based on position heading angle is implemented to correct in real time. Combining kinematics model pure pursuit robot, path-tracking control proposed. Path planning...
A united-reference fractional counter (URFC) is proposed for multi-level time-to-digital converters (TDCs) used in direct time-of-flight (dToF) light detection and ranging (LiDAR) applications. The URFC combines the integer second-level interpolation one functional block that derives both part from same synchronization result. Thus TDC has a more robust structure to deal with misalignment errors, measurement results different levels can be perfectly matched. High linearity high precision...
The traditional food information model cannot guarantee the traceability of quality and safety information. In response to this problem, blockchain has garnered significant attention from industry, because it can ensure in system. However, a trusted system covering full supply chain, with characteristics systematic, accountable, user‐friendly, is important for safety. Utilizing intelligent Internet‐of‐Thing (IoT) technology, architecture designed physical layer, IoT layer. Taking Fabric...
Applying chameleon hash functions to redactable blockchains is still challenging work. Most blockchain solutions using this technique have potential problems, such as too weak decentralization performance and trapdoors with exposure risks. In addition, quantum computing also threatens the security of systems. The above two issues imply that development constrained, quantum-resistance will be requirements for applications. Therefore, we constructed a function over lattices while utilizing...
This paper presents a novel CMOS peak detect and hold (PDH) circuit scheme for pulsed time of flight (ToF) Lidar application. The proposed PDH circuit, which is one part analog front end (AFE) receiver, used to widen the narrow input pulse width, aiming easily digitize amplitude through low-speed low-cost ADC in ToF reset voltage clamped common-mode level beneficial reduce pedestal error voltage. Meanwhile, auto-adjust charging current employed decrease rejecting overshoot circuit. was...
Karst wetlands are important in the global carbon and nitrogen cycles as well security of water resources. Huixian wetland (Guilin) is largest natural karst China. In recent years, groundwater pollution has increasingly affected ecosystem integrity due to anthropogenic activities. this study, it was hypothesized that autotrophic microbial diversity impacted with advent pollution, adversely affecting autotrophs cycles. Autotrophic microbes have roles abating pollution. Thus, great...