- 标题
- 摘要
- 关键词
- 实验方案
- 产品
过滤筛选
- 2019
- 2018
- parasitic patches
- Direct coupled
- gap coupled
- hybrid coupled
- composite mode
- Pumped hydro storage
- Reliability
- Particle swarm optimization
- Hybrid system
- photovoltaic power
- Electrical Engineering and Automation
- Electronic Science and Technology
- State Grid Sichuan Electric Power Research Institute
- SVKM’s DJSCE
- University of Electronic Science and Technology of China
- State Grid Sichuan Electric Power Company
- DIAT
- Aalborg University
- Tsinghua Sichuan Energy Internet Research Institute
-
Global Optimization of All-Optical Hybrid-Casting in Inter-Datacenter Elastic Optical Networks
摘要： In inter-datacenter elastic optical networks (IDC-EONs), routing, modulation-level, and spectrum assignment (RMLSA) is one of the key measures to increase network capacity and flexibility of spectrum resource management. The coexistence of unicast, anycast, multicast, and manycast traffic in IDC-EONs forms a more complex network communication scheme called hybrid cast. However, the majority of the previous RMLSA approaches focused on the network communication scheme with single traffic type and optimized network performance on the specific network metric, which leads to less practicability and a limit to one-sided network performance improvement. To achieve better network performance, we investigate the hybrid-cast RMLSA (HC-RMLSA) problem with the objective of improving IDC-EON overall performance. Specifically, a criterion is defined to estimate the overall network performance by considering both the overall network service and operation effectiveness and the network cost. An ILP model is formulated to solve the HC-RMLSA problem under static network scenario. Then, we propose an independent optimization genetic algorithm with priority-based rationality adaption (IOGA-PRA) by coordinating a set of hybrid-cast requests simultaneously to solve the HC-RMLSA problem under both static and dynamic network scenarios. Numerical results show that the performance of IOGA-PRA is very close to the optimal solutions obtained by the ILP model on the network cost-effectiveness in static network scenario. The IOGA-PRA also achieves outstanding improvement of the overall network performance compared with benchmark algorithms in the dynamic network scenario.
关键词： global optimization,hybrid-cast,modulation level,spectrum assignment (RMLSA),inter-datacenter,routing,Elastic optical networks (EONs)
更新于2025-09-10 09:29:36
-
hybride nanowire networks prepared by electrospinning
摘要： We prepared La1.85Sr0.15CuO4/La0.7Sr0.3MnO3 nanowire network hybrid systems by means of electrospinning. From obervation by scanning electron microscopy, the average diameter of the nanowires is around 220 nm and the average length can reach over 50 μm. The randomly aligned La1.85Sr0.15CuO4 and La0.7Sr0.3MnO3 nanowires exhibit numerous interconnects among each other and form a complicated, non woven hybrid network system. The nanowires are polycrystalline with a grain size at around 30 nm as con?rmed by transmission electron microscopy. According to four-probe electrical transportation and magnetization measurements, superconductivity of the sample is suppressed and a positive magnetoresistance e?ect is observed. Measurements of M(T ) and M(H) were carried out as well, revealing the soft magnetic character of the hybrid nanowire network samples.
关键词： LSCO,electrospinning,nanowires,LSMO,magnetization,magnetoresistance,hybrid network
更新于2025-09-10 09:29:36
-
Impact of Cu particles on adsorption and photocatalytic capability of mesoporous Cu@TiO2 hybrid towards ciprofloxacin antibiotic removal
摘要： In this study, Cu@TiO2 hybrids consisting of Cu nanoparticles and mesoporous TiO2 nanoaggregates have been successfully synthesized through a simple reduction method. The Cu2+ concentration can not only engineer the mass ratio of Cu specie in the hybrids, but also tailored the size of Cu particles during this synthesis. The adsorption and photocatalytic performance towards degrading ciprofloxacin of the as-synthesized Cu@TiO2 hybrids were determined by the mass ratio as well as the Cu particle size of Cu@TiO2 in the hybrids. It was found that the Cu@TiO2 hybrid with low Cu content promoted photocatalytic performance, while high Cu content improves the adsorption efficiency. Among the as-prepared Cu@TiO2 samples, the 0.1-Cu@TiO2 sample with Cu particle content of 0.1 wt% displayed the best charge separation and transfer efficiency for photogenerated electrons and holes, and accordingly, presented the best photocatalytic efficiency, which is around 3 times higher than that for pure TiO2. In contrast, 10-Cu@TiO2 with 10 wt% Cu showed the highest adsorption capability (888.57 mg/g, about 5 times larger than that of TiO2), since it had the most negative zeta potential, although its Brunauer-Emmett-Teller surface area was less than that of the pure TiO2 material. This work has not only developed a facile approach to prepare Cu-based hybrids, but also reveals how Cu@TiO2 hybrids can be tailored and optimized for adsorption and photocatalytic removal of antibiotic pollution.
关键词： Antibiotic removal,Cu-TiO2 hybrid,Photocatalysis,Adsorption
更新于2025-09-10 09:29:36
-
A methodology framework for retrieval of concrete surface crack′s image properties based on hybrid model
摘要： Regular concrete surface crack inspection is critical since cracks are one of the earliest signs of deteriorating in concrete structures. With recent digital imaging and processing techniques, computer vision-based inspection shows huge potential in this field. A novel image processing framework for automatically retrieving multiple crack properties from concrete surface images is proposed. The framework includes (1) a crack extraction algorithm which combines edge detecting and seed growing; (2) a skeleton optimizing method which contains short branch deleting and polyline approximation algorithm; (3) a hybrid crack model which classifies crack segments into disc-shaped and bar-shaped parts based on their skeleton topological information, and (4) a triad labelling method that indicates the interrelationships between different cracks. Contrast experiments showed that the proposed segmentation method can extract more complete crack segments. Real image experiments indicated that the framework is effective and helpful for subsequent concrete structure health assessment.
关键词： Hybrid model,Image analysis,Crack detection,Feature extraction,Concrete
更新于2025-09-10 09:29:36
-
A novel strategy to modify the surface of plasma electrolysis produced inorganic coatings for fabricating organic@functional binding agents@inorganic materials
摘要： Organic@functional binding agents(FBAs)@inorganic materials are fabricated using two efficient methods. For this purpose, inorganic layer containing organically magnesium aluminate loaded with metal hydroxide, namely (Mg(OH)2 or/and Ni(OH)2), and 2-mercaptobenzimidazole (MBI) were produced on Mg-3%Al-1%Zn alloy via plasma electrolysis (PE) method and then two-step dip chemical coating (DCC) method. The presence of metal hydroxides resulted in a decrease in the porosity and microcracks and an increase in strong bonds between organic and inorganic coating. Thus, it was found that the hybrid 2-mercaptobenzimidazole and metal hydroxides materials act good corrosion inhibitors for magnesium corrosion in aqueous solutions.
关键词： Hybrid materials,Dip chemical coating,2-Mercaptobenzimidazole,Organic coating
更新于2025-09-10 09:29:36
-
Screening Approach for the Discovery of New Hybrid Perovskites with Efficient Photoemission
摘要： Owing to quantum confinement, low-dimensional hybrid perovskite materials have recently shown a great potential for applications in optoelectronics. Such compounds can exhibit broad- or narrow-band light emission, low-temperature solution processability, high thermal stability, and relatively high photoluminescence quantum yields (PLQY). However, the search for efficient phosphors with a specific set of characteristics remains difficult because the family of hybrid perovskites consists in an extremely large chemical system (i.e., different halides, metals, and organic molecules), and optical properties are not predictable prior to material synthesis and characterization. Here, is proposed a simple approach to screen a significant amount of new hybrid lead halide perovskites. The synthetic method by fast crystallization at low temperature enables the rapid identification of the materials exhibiting the targeted photoluminescence properties. This approach is tested for the discovery of hybrid lead halide perovskites with efficient white-light emission. Among 100 newly synthesized compounds, 5 exhibit intense white emission, and the in-depth characterization of a selected candidate shows high color rendering index (CRI) = 78 and a PLQY of 9%, which is equivalent to the record reported for hybrid perovskites. This compound exhibits a new structure type for warm white-light emitting hybrid perovskites with chains of corner-sharing PbX6.
关键词： screening,photoluminescence,hybrid perovskite,white LEDs
更新于2025-09-10 09:29:36
-
Boosted electrochemical performance of TiO2 decorated RGO/CNT hybrid nanocomposite by UV irradiation
摘要： Titania decorated RGO/CNT hybrid electrode material was prepared for supercapacitor (SCs) application through facile hydrothermal approach. Combined act of 1D CNTs and 2D RGO assists the uniform in-situ growth of titania towards high surface area mesoporous self-assembled interconnected morphology which is confirmed from FESEM and BET surface area analysis. This interconnected porous network like structure can efficiently allow the better mass transport and decreased contact resistance towards high electrochemical utilization. Electrochemical measurements revealed the superior performance of hybrid nanocomposite comprising of titania/RGO/CNT (TG1C1) which exhibited maximum specific capacitance around 477 F/g at current density 1 A/g. However, this capacitance value was further enhanced up to 537 F/g after 1 hour of UV light irradiation. This enhancement could be ascribed to photo-catalytic effect of TiO2 and corresponding genesis of photo-excited electrons on TiO2 surface which further channelized through interconnected RGO and CNT morphology and hence results in improved specific capacitance. These observations were in good agreement with cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analysis. The hybrid nanocomposite also showed satisfying energy density and power density. It was also found that prepared hybrid nanocomposites were stable up to 2000 cycles with maximum specific capacitance retention of 92% of initial value.
关键词： Energy storage,RGO-CNT hybrid,Titania,Specific Capacitance
更新于2025-09-10 09:29:36
-
The Surface and Interface Engineering Multi-Layered Nanopore Films for Enhanced Fabry-Pérot Interferences
摘要： In this study, a broadly-tunable nanoporous thin film system with alternating layers of Ag/indium tin oxide (ITO)/CoFeB/ITO/Ag, which was fabricated on a porous anodic aluminum oxide (AAO) substrate, was presented, so as to achieve the flexible tailoring of the Fabry-Pérot interference. The experimental results demonstrated that the amplitude of the Fabry-Pérot interference of this system, which had only an Ag layer deposited on the AAO substrate, was 12 times higher than that of pure AAO film, aside from the tunable oscillation periods. This was mainly due to the fact that the Ag mirror greatly improved the reflectivity of the air/AAO interface, rendering the intensities of light reflected from the air/AAO and AAO/Al interfaces comparable, thereby forming an effective interference enhancement. Furthermore, the existence of the ferromagnetic CoFeB layer was capable of significantly improving the absorbance in the ultraviolet and visible spectral ranges, and, in particularly, the oscillation ranges could be extended to the near-infrared spectral range (> 2,600 nm) by utilizing an ITO with lower conductivity as a spacer layer, due to its material dispersion which was approximately equal to zero. This new nanoporous thin film system represents a powerful tool for the future development of ultrasensitive optical devices based on the Fabry-Pérot interference and investigation of many interesting physical phenomena.
关键词： Ag/ITO/CoFeB/ITO/Ag layers,Hybrid Materials,Magnetic,Plasmonics,AAO substrate,Fabry-Pérot interference,Nanoporous thin film,Optical
更新于2025-09-10 09:29:36
-
Visible Light-Promoted Plasmon Resonance to Induce “Hot” Hole Transfer and Photothermal Conversion for Catalytic Oxidation
摘要： Titanium dioxide (TiO2) semiconductor photocatalysts were photosensitized to the visible spectrum with gold nanospheres (AuNSs) and gold nanorods (AuNRs) to study the ethanol photo-oxidation cycle, with an emphasis towards driving carbon-carbon (C-C) bond cleavage at low temperatures. The photocatalysts exhibited a localized surface plasmon resonance (SPR) that was harnessed to drive the complete photo-oxidation of formic acid (FA) and ethanol (EtOH) via augmented carrier generation/separation and photothermal conversion. Contributions of transverse and longitudinal localized SPR modes were decoupled by irradiating AuNSs-TiO2 and AuNRs-TiO2 with targeted wavelength ranges to probe their effects on plasmonically-assisted photocatalytic oxidation of FA and EtOH. Photocatalytic performance was assessed by monitoring the yield of gaseous products during photo-oxidation experiments using a gas chromatography-mass spectrometry-multiple headspace extraction (GC-MS-MHE) analysis method. The complete oxidation of EtOH to CO2 under visible-light irradiation was confirmed by GC-MS-MHE for both AuNSs and AuNRs on TiO2 at room temperature. Photothermal and local field enhancements were found to aid in selectively cleaving the C-C bond in EtOH to form FA, while FA was further oxidized to CO2 by plasmon-induced electron transfer mechanisms. Under visible light (>420 nm) irradiation, carrier generation/separation and photothermal conversion was achieved, resulting in the photogenerated “hot” holes driving the photo-oxidation primarily on the AuNPs. Specifically, plasmonic enhancement by AuNR-TiO2 enhances EtOH oxidation, providing a method to selectively cleave C-C bonds.
关键词： Carbon-carbon bond cleavage,Photocatalysis,Hybrid Materials,Gold nanoparticles,Ethanol oxidation,Magnetic,Formic acid oxidation,Plasmonics,TiO2,Optical
更新于2025-09-10 09:29:36
-
Ultrahigh Output Piezoelectric and Triboelectric Hybrid Nanogenerators Based on ZnO Nanoflakes/Polydimethylsiloxane Composite Films
摘要： We demonstrated a hybrid nanogenerator exploiting both piezoelectric and triboelectric effects induced from ZnO nanoflakes (NFs)/polydimethylsiloxane composite films through a facile, cost-effective fabrication method. This hybrid nanogenerator exhibited not only high piezoelectric output current owing to the enhanced surface piezoelectricity of the ZnO NFs but also high triboelectric output voltage owing to the pronounced triboelectrification of Au-PDMS contact, producing peak-to-peak output voltage of ~470 V, current density of ~60 μA·cm?2, and average power density of ~28.2 mW·cm?2. Without additional energy storage devices, the hybrid nanogenerators with an area of 3×3 cm2 instantaneously lit up 180 commercial green light-emitting diodes through periodic hand compression. This approach may provide an innovative design for constructing high-performance and portable energy harvesting devices with enhanced power output, scavenging ambient mechanical energy from human motions in our daily life.
关键词： Piezoelectric,ZnO nanoflakes,Triboelectric,Ultrahigh,Hybrid nanogenerator,Polydimethylsiloxane
更新于2025-09-10 09:29:36