A5091296600- Transportation Planning and Optimization
- Urban Transport and Accessibility
- Transportation and Mobility Innovations
- Smart Parking Systems Research
- Traffic control and management
- Network Security and Intrusion Detection
- Perovskite Materials and Applications
- Advanced Malware Detection Techniques
- Quantum Dots Synthesis And Properties
- Internet Traffic Analysis and Secure E-voting
- Maritime Ports and Logistics
- Urban and Freight Transport Logistics
- Advanced Photocatalysis Techniques
- Molecular Sensors and Ion Detection
- Aviation Industry Analysis and Trends
- Supply Chain and Inventory Management
- Vehicle Routing Optimization Methods
- Maritime Transport Emissions and Efficiency
- Evacuation and Crowd Dynamics
- Analytical Chemistry and Sensors
- Electrocatalysts for Energy Conversion
- Economic and Environmental Valuation
- Sulfur Compounds in Biology
- Evaluation and Optimization Models
- Luminescence and Fluorescent Materials
Huazhong University of Science and Technology
2016-2025
South China University of Technology
2006-2025
Key Laboratory of Guangdong Province
2023-2025
China South Industries Group (China)
2024
North University of China
2018-2024
Hong Kong Polytechnic University
2007-2024
East China Normal University
2024
Ningxia Medical University
2007-2024
Changzhou University
2021-2024
Peoples' Friendship University of Russia
2024
Methylammonium lead halide perovskites suffer from poor stability because of their high sensitivity to moisture. Inorganic material coatings SiO2 are preferred for coupling with improve stability, whereas the conventional formation method is unsuitable it requires water. Here, a simple generation based on hydrolysis rate tetramethyl orthosilicate in analytical-grade toluene was developed avoid addition water and catalyst. As result, SiO2-encapsulated CH3NH3PbBr3 quantum dots (MAPB-QDs/SiO2)...
Traditional smart fluorescent materials, which have been attracting increasing interest for security protection, are usually visible under either ambient or UV light, making them adverse to the potential application of confidential information protection. Herein, we report an approach realize protection and storage based on conversion lead-based metal-organic frameworks (MOFs) luminescent perovskite nanocrystals (NCs). Owing invisible controlled printable characteristics MOFs, can be...
We successfully prepared QDs incorporated into a silica/alumina monolith (QDs-SAM) by simple sol-gel reaction of an Al-Si single precursor with CsPbBr3 blended in toluene solution, without adding water and catalyst. The resultant transparent exhibits high photoluminescence quantum yields (PLQY) up to 90 %, good photostability under strong illumination blue light for 300 h. show that the preliminary ligand exchange didodecyl dimethyl ammonium bromide (DDAB) was very important protect from...
Under illumination of light-emitting diode (LED) or sunlight, the green color all-inorganic CsPbBr3 perovskite nanocrystals (CPB-NCs) often quickly changes to yellow, followed by large photoluminescence (PL) loss. To figure out what is happening on CPB-NCs during change process, morphology, structure, and PL evolutions are systematically investigated varying influence factors illumination, moisture, oxygen, temperature. We find that yellow mainly originated from CPB crystals formed in...
Online social networks (OSNs) are popular collaboration and communication tools for millions of users their friends. Unfortunately, in the wrong hands, they also effective executing spam campaigns spreading malware. Intuitively, a user is more likely to respond message from Facebook friend than stranger, thus making distribution mechanism traditional email. In fact, existing evidence shows malicious entities already attempting compromise OSN account credentials support these "high-return"...
Abstract Achieving good stability while maintaining excellent properties is one of the main challenges for enhancing competitiveness luminescent perovskite CsPbX 3 (X=Cl, Br, I) nanocrystals (NCs). Here, we propose a facile strategy to synthesize ceramic-like stable and highly CsPbBr NCs by encapsulating them into silica derived from molecular sieve templates at high temperature (600–900 o C). The obtained -SiO 2 powders not only show photoluminescence quantum yield (~71%), but also an...
Zero-day polymorphic worms pose a serious threat to the security of Internet infrastructures. Given their rapid propagation, it is crucial detect them at edge networks and automatically generate signatures in early stages infection. Most existing approaches for automatic signature generation need host information are thus not applicable deployment on high-speed network links. In this paper, we propose Hamsa, network-based automated system which fast, noise-tolerant attack-resilient....
Online social networks (OSNs) are exceptionally useful collaboration and communication tools for millions of users their friends. Unfortunately, in the wrong hands, they also extremely effective executing spam campaigns spreading malware.
Abstract We successfully prepared QDs incorporated into a silica/alumina monolith (QDs‐SAM) by simple sol–gel reaction of an Al–Si single precursor with CsPbBr 3 blended in toluene solution, without adding water and catalyst. The resultant transparent exhibits high photoluminescence quantum yields (PLQY) up to 90 %, good photostability under strong illumination blue light for 300 h. show that the preliminary ligand exchange didodecyl dimethyl ammonium bromide (DDAB) was very important...
The increasingly sophisticated Advanced Persistent Threat (APT) attacks have become a serious challenge for enterprise IT security.Attack causality analysis, which tracks multi-hop causal relationships between files and processes to diagnose attack provenances consequences, is the first step towards understanding APT taking appropriate responses.Since analysis time-critical mission, it essential design tracking systems that extract useful information in timely manner.However, prior work...
Intrusive multi-step attacks, such as Advanced Persistent Threat (APT) have plagued enterprises with significant financial losses and are the top reason for to increase their security budgets. Since these attacks sophisticated stealthy, they can remain undetected years if individual steps buried in background "noise." Thus, seeking solutions "connect suspicious dots" across multiple activities. This requires ubiquitous system auditing long periods of time, which turn causes overwhelmingly...
Abstract In this communication, a simple postmodification method to improve the optical properties and stability of CsPbBr 3 perovskite nanocrystals (CPB‐NCs) is reported. By strictly controlling adding dose K‐oleate (molar ratio K/Cs = 1.5/1) into parent CPB‐NC solution, it possible synthesize monodispersed K‐modified CPB‐NCs (K‐CPB‐NCs) with drastically enhanced photo‐ thermostabilities as well photoluminescence quantum yields, which are increased 83% from 65%. Photostability tests show...
Lead halide perovskite nanocrystals (NCs) as promising optoelectronic materials are intensively researched. However, instability is one of the biggest challenges needed to overcome before fulfill their practical applications. To improve stability, we present a postsynthetic controlled phase transformation CsPbBr3 toward CsPbBr3/Rb4PbBr6 core/shell structure triggered by rubidium oleate treatment. The resulting NCs show exceptional photostability both in solution and on-chip. can remain over...
Semiconductor quantum dots (QDs) have attracted extensive attention in various applications because of their unique optical and electronic properties. However, long-term photostability remains a challenge for practical application. Here, we present simple method to enhance the QDs against oxidation by doping aluminum into shell core/shell QDs. We demonstrate that Al coating can be oxidized Al2O3, which serve as self-passivation layer on surface effectively stop further photodegradation...
NiFe-layered double hydroxides (NiFe-LDHs), as promising electrocatalysts, have received significant research attention for hydrogen and oxygen generation through water splitting. However, the slow oxidation kinetics of NiFe-LDH, due to limited number active sites low conductivity, hinders improvement water-splitting efficiency. Therefore, overcome obstacles, two-dimensional (2D) SnS was first explored tailor prepared NiFe-LDH via hydrothermal method. A NiFe-LDH/SnS heterojunction is built,...