A5103057497- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Luminescence and Fluorescent Materials
- Photonic and Optical Devices
- Space Satellite Systems and Control
- Rocket and propulsion systems research
- Spacecraft Dynamics and Control
- Robotics and Sensor-Based Localization
- Digital Image Processing Techniques
- Inertial Sensor and Navigation
- Particle accelerators and beam dynamics
- Advanced Image and Video Retrieval Techniques
- Medical Image Segmentation Techniques
- Particle Accelerators and Free-Electron Lasers
- Optical measurement and interference techniques
- Advanced Control Systems Optimization
- Fault Detection and Control Systems
- Quantum optics and atomic interactions
- Facility Location and Emergency Management
- Nanoplatforms for cancer theranostics
- Dark Matter and Cosmic Phenomena
- Guidance and Control Systems
- Synthesis and Properties of Aromatic Compounds
- Marketing and Advertising Strategies
- Carbon and Quantum Dots Applications
Harbin Institute of Technology
2017-2025
National University of Singapore
2022-2024
Tiangong University
2023
Changshu Institute of Technology
2023
China Academy of Launch Vehicle Technology
2022
NetEase (China)
2021
National Synchrotron Radiation Research Center
2019
Guangxi University
2019
Fuzhou University
2013
South China University of Technology
2012
Abstract Photonic bound states in the continuum (BICs), embedded spectrum of free-space waves 1,2 with diverging radiative quality factor, are topologically non-trivial dark modes open-cavity resonators that have enabled important advances photonics 3,4 . However, it is particularly challenging to achieve maximum near-field enhancement, as this requires matching and non-radiative losses. Here we propose concept supercritical coupling, drawing inspiration from electromagnetically induced...
Vacancies pose a major challenge in the production of high-quality crystals, particularly at nanoscale. To address this problem, we report convenient strategy that involves volumetric lattice reconstruction and dynamic metal complex docking to produce ultrasmall (10 nm) bright core–shell upconversion nanoparticles (UCNPs). This formation lanthanide ion–oleic acid complexes during postannealing solution, which effectively removes vacancies nanocrystals. The removal restricts diffusion...
X-ray scintillators have utility in radiation detection, therapy, and imaging. Various materials, such as halide perovskites, organic illuminators, metal clusters, been developed to replace conventional due their ease of fabrication, improved performance, adaptability. However, they suffer from self-absorption, chemical instability, weak stopping power. Addressing these limitations, we employ alkali doping turn nonemissive CsPb
In this study, a method for predicting the thermal shock life of coatings is proposed, and model based on high temperature test three-dimensional heat transfer analysis established. Firstly, at different cooling heating cycle temperatures obtained through designed testing device silicide wide-temperature range from 500℃ to 3000℃. Secondly, actual thickness coating continuous oxidation in are taken into consideration. Based finite element method, with carried out obtain average value maximum...
<title>Abstract</title> The ability of materials to respond optical stimuli with significant nonlinearity is crucial for technological progress and innovation. Although photon avalanche upconversion nanomaterials nonlinearities over 40 are known, surpassing this level practical use has remained a challenge. Here, we demonstrate that it possible significantly enhance in avalanches values beyond 500 by reconstructing the sublattice within an expanded network. Experimental investigations reveal...
This paper focuses on how to improve the processing efficiency, mining and result accuracy of IoT big data algorithms meet growing volume complexity through optimal design based artificial intelligence techniques. We propose methods build model trees, detect feature data, standardize optimize performance traditional in face uneven distribution, high dimensionality, noise missing values. The simulation experiment results show that algorithm AI technology can better handle massive discover...
In this paper, an improved extended state observer (ESO) based on sigmoid function and a finite-time convergence attitude controller are designed for reusable launch vehicle (RLV) in the re-entry phase.First, control-oriented model (COM) of RLV is established.According to singular perturbation theory, control system divided into outer-loop inner-loop subsystems.Second, ESO (SESO) proposed estimate uncertainties external disturbance caused by large maneuver complicated environment during...
Perovskite emitters are promising materials as next-generation optical sources due to their low fabrication cost and high quantum yield. In particular, the superradiant emission from a few coherently coupled perovskite can be used produce bright entangled photon source. Here, we report observation of superradiance mesoscopic (<55) CsPbBr3 emitters, which have much smaller ensemble size than previously reported results (>106 emitters). The is spontaneously generated by off-resonance...
Abstract Precise control of exciton confinement in metal halide perovskites is critical to the development high‐performance, stable optoelectronic devices. A significant hurdle swift completion ionic metathesis reactions, often within seconds, making consistent challenging. Herein, introduction different steric hindrances a Cs + sublattice CsYb 2 F 7 reported, which effectively modulates reaction rate with lead (Pb 2+ ) and ions solution, extending synthesis time for perovskite...
Given a weighted and complete graph G = (V, E), V denotes the set of n objects to be clustered, weight d(u, v) associated with an edge (u, belonging E dissimilarity between u v. The diameter cluster is maximum pairs in cluster, split minimum within outside cluster. In this paper, we propose new criterion for measuring goodness clusters: ratio diameter, objective maximize ratio. For k 2, present exact algorithm. >= 3, prove that problem NP-hard factor 2 approximation algorithm on...
The Euler method is a typical one for numerically solving initial value problems of ordinary differential equations. Particle swarm optimization (PSO) an efficient algorithm obtaining the optimal solution nonlinear problem. In this study, PSO‐based Euler‐type proposed to solve problem method, equidistant grid points are always used obtain approximate solution. existing shortcoming that when iteration number increasing, could be greatly away from exact one. Here, it considered distribution...
This paper develops a novel nonlinear adaptive robust filter called the multiple-step randomly delayed variational Bayesian high-degree cubature Huber-based (MRD-VBAHCHF) for class of stochastic systems whose measurements are by multiple sampling times and corrupted contaminated Gaussian noise with unknown covariance. First, system measurement is modeled in terms Bernoulli random variables. Then, Kalman (MRD-HCKF) derived employing fifth-degree rule to compute mean covariance equations...
In this paper, by employing primary/ backup (P/B) technique and the concept of game theory, we propose a theoretical fault-tolerant task allocation algorithm for heterogeneous WSNs. During experiment, our job can be divided into two parts. Firstly, introduces idea theory solving primary tasks problem, then define playoffs function to find Nash equilibrium point purpose saving node energy consumption balancing network under restraint deadline. Secondly, based on tasks, determinate scheme...
This paper studies the feasibility of single-stage-to-orbit (SSTO) rocket with an initial nonzero velocity given by auxiliary electromagnetic launch (EML) system. First, development history SSTO is sketched. Then, on basis Ziolkovsky formula, preliminary analysis rockets proposed, which very helpful to draw boundary feasible rockets’ payload ratios, and shows difficulty without velocity. Furthermore, deriving from rocket’s dynamic model in longitudinal plane, a theoretical relationship...