JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Minghan Zhou,Tongtong Gao,Shuanglong Chen,Xuejiao Wang,Qiushi Wang,Cailong Liu
Due to its unique advantages including non-contact operation, high sensitivity, and exceptional spatial resolution, nanoscale optical thermometry has become an indispensable technique with widespread applications in micro/nanoelectronics, integrated photonic systems, and biomedical engineering. Here, Yb 3+ /Tm 3+ co-doped AlN nanowires were successfully synthesized via an arc-discharge method. The nanowires, characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, scanning electron microscopy, and transmission electron microscopy, exhibit lengths of several micrometers and uniform diameters ranging from 10 to 20 nm, yielding a high aspect ratio. Under 980 nm excitation, the nanowires display distinct up-conversion (UC) luminescence, with emission bands at 544 nm (green), 654 nm and 691 nm (red), and 795 nm (near-infrared), corresponding to Tm 3+ ion transitions. The AlN:Yb 3+ /Tm 3+ nanowires show excellent optical thermometry performance, achieving a maximum relative sensitivity ( S r ) of 3.32 % K −1 at 298 K and a temperature resolution ( δT ) of 0.009 K. These results underscore the potential of AlN:Yb 3+ /Tm 3+ nanowires for advanced optical temperature sensing in nanotechnology, biomedical applications, and high-resolution thermal imaging.
研究领域:
材料科学
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纳米技术
·
光学工程
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DOI
高影响因子
Applied Materials Today
·
2026
·
IF 6.9
Zhilei Wei,Huiyu Qi,Yinuo Ma,Wenqi Xie,Lei Zhao,Bo Wang,Zhenxia Yuan,Zhongqi Shi
The ongoing miniaturization and increasing integration density of modern microelectronic devices have made thermal management a critical challenge for sustained performance advancement. While polymer/ceramic composites are commonly used as thermal management materials, their effectiveness is fundamentally limited by discontinuous thermal conductive pathways, resulting in unsatisfied thermal conductivity (TC). Although increasing filler loading can enhance TC, it typically compromises processability and mechanical properties of the composites. To address these limitations, unidirectional porous (UP) AlN ceramics were innovatively fabricated via freeze casting followed by combustion synthesis, which were subsequently incorporated into epoxy matrices. At a AlN loading of 47.5 vol%, the composites achieved the TC ∥ (parallel to the channels) of 10.30 W·m -1 ·K -1 and TC ⊥ (perpendicular to the channels) of 6.03 W·m -1 ·K -1 , respectively. Comprehensive evaluations through both experimental CPU cooling tests and finite element simulations verified their superior thermal dissipation capability. The UP AlN reinforcement further enhanced the mechanical properties of the composites and facilitated their long service life. This work presents a scalable and cost-effective material solution for advanced thermal management in high-power microelectronics.
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高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 8
·1898
·
IF 5.076
Zhengdong Wang,Xiaozhuo Wang,Silong Wang,Jieyu He,Tong Zhang,Juan Wang,Guanglei Wu
Polymer-based composites with high thermal conductivity and dielectric breakdown strength have gained increasing attention due to their significant application potential in both power electronic devices and power equipment. In this study, we successfully prepared novel sandwich AlN/epoxy composites with various layer thicknesses, showing simultaneously and remarkably enhanced dielectric breakdown strength and thermal conductivity. The most optimized sandwich composite, with an outer layer thickness of 120 μm and an inner layer thickness of 60 μm (abbreviated as 120-60) exhibits a high through-plane thermal conductivity of 0.754 W/(m·K) (4.1 times of epoxy) and has a dielectric breakdown strength of 69.7 kV/mm, 8.1% higher compared to that of epoxy. The sandwich composites also have higher in-plane thermal conductivity (1.88 W/(m·K) for 120-60) based on the novel parallel models. The sandwich composites with desirable thermal and electrical properties are very promising for application in power electronic devices and power equipment.Keywords:sandwich epoxy-based composites;aluminium nitride;dielectric properties;thermal conductivity
研究领域:
材料科学
·
电气工程
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2015
·
IF 2.605
Chi Zhang,Xiumin Yao,Yinsheng Li,Hanqin Liang,Jian Chen,Jingxian Zhang,Jian Yang,Xiaoyun Li,Tai Qiu,Zhongming Chen,Xuejian Liu,Zhengren Huang
Dense silicon carbide ceramics with 0.5–10 wt% AlN additions were pressureless densified by two steps sintering using B 4 C and C as sintering additives. The effects of AlN content on density, microstructure and thermal conductivity of SiC–AlN composites were investigated. SiC ceramics can be well densified in the presence of AlN. The phonon scattering mechanism and the Klemens–Callaway theory were used to calculate the thermal conductivity evolution of SiC ceramics result from the dissolved Al and N atoms. The main reason for the degradation of thermal conductivities is the point defect scattering dominated by the differences in size and interatomic forces between impurity and host atoms.
研究领域:
材料科学
·
热传导工程
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DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 29
·9925-9936
·
IF 6.4
Zhaoling Huang,Siyuan Li,Hao Guo,Caiping Huang,Yuyu Bian,Yubing Gong,Jiaqiang Huang,Qi Zeng
Electrothermal materials with low energy consumption and high stability are in high demand for improving our daily life. Here we propose a novel high-performance flexible heater with a high heating rate through screen printing, based on multi-scale nanocomposites comprised of multilayer graphene oxide (ML-GO), carbon nanotubes (CNTs) and aluminum nitride (AlN). The results show that AlN can fill the gaps in the network structure, reducing the surface thermal resistance and film resistivity, which greatly improves the electrical and thermal conductivity of the flexible heater. The maximum temperature of the ML-GO/CNT/AlN heated film reaches 131.2 °C at 4.5 V, and the thin layer exhibits a low sheet resistance down to 10.27 ± 2.5 Ω sq−1. Meanwhile, the steady temperature and corresponding responsivity of the multi-scale flexible heater are 153% and 57.8% higher than those of the ML-GO-based flexible heater, respectively. Inspiringly, the fluctuation in the steady-state temperature curve is less than 0.8% under random mechanical bending and torsion force. During deicing, a high steady-state temperature can also be observed and the ultra-fast response time is far superior to those of most existing heaters. In addition to that, ML-GO/CNT/AlN heaters present a low driving voltage, excellent flexibility and stability, and can be integrated into various deicing conditions and wearable medical systems without being too picky about the used substrates. They also show great potential for application in various intelligent heating films and open up pathways for wearable heating applications.
研究领域:
材料科学
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能源工程
·
柔性电子
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DOI
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 28
·10002-10019
·
IF 7.367
Yanjuan Huang,Yuanfeng He,Ziyuan Huang,Yali Jiang,Weijing Chu,Xiaoqi Sun,Liangfeng Huang,Chunshun Zhao
Cisplatin (CDDP) is a potent anti-carcinogen that is widely used for various solid tumors; however, its clinical application is limited by its severe nephrotoxicity. Novel platinum–bisphosphonate polymer–metal complex nanoparticles (Pt–bp NPs), based on platinum–bisphosphonate coordination, have been established. Three polymer carriers bearing alendronate (ALN) ligands, while containing different lengths of alkyl hydrophobic chains, were synthesized. Their structures were characterized by 1H NMR, 31P NMR and FTIR. The ALN was used to coordinate to the CDDP precursor [Pt(NH3)2(OSO3)(OH2)], and the Pt–bp NPs were formed spontaneously. The Pt–bp NPs formed by the polymer carrier, ALN-PEG2k-ASAC18, which contained the poly(ethylene glycol) chain with ALN on one side and the octadecyl hydrophobic chain on the other side, was denoted as ALN-ASAC18-CDDP; its diameter was within 200 nm. CDDP was released in a Cl− or pH-dependent manner. The cytotoxic effects to the HeLa, A549 and MCF-7 cell lines were relatively weak, compared to CDDP. However, ALN-ASAC18-CDDP showed significantly prolonged blood circulation time and tumor accumulation of platinum of 2.5-fold, compared to CDDP at 8 h. Besides, ALN-ASAC18-CDDP was demonstrated to remarkably reduce systemic toxicity without compromising in vivo antitumor activity. These results indicate that the facilely prepared ALN-ASAC18-CDDP has great utilization potential for CDDP delivery in a clinical setting.
研究领域:
药剂学
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肿瘤学
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材料科学
·
药物递送系统
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DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2020
·
IF 3.408
Yanling Cheng,Kexu Li,Shihong Wei,Hainan Zhang,Shengkai Yang,Xiong Huang,Sidney Lin,Kevin P. Plucknett,Huatay Lin
Nano-sized AlN powders were successfully synthesized using a wet chemical route, with dicyandiamide as the nitrogen source reagent. The influence of dicyandiamide/metal precursor molar ratio on the purity, crystallization, microstructure, and optical properties of the calcined powders were studied. The underlying reaction mechanisms, along with the intermediates formed during the reactions, were also investigated. The compositions and morphologies of the as-received and prepared powders were subsequently characterized using XPS , FTIR , XRD , SEM, and TEM. The optical properties of the prepared powders were measured by ultraviolet–visible spectroscopy (UV–Vis). The precursor components decompose, and follow a complex reaction sequence as a function of temperature, finally leading to AlN formation at 800 °C. Increasing AlN content is achieved between 800 and 890 °C. Essentially only AlN arises following calcination at 900 °C. The AlN crystallite size and degree of crystallization further increase when calcining at 1000 °C. This work demonstrates a promising route to produce nano-sized AlN powders with favorable microstructures and optical properties.
研究领域:
材料科学
·
化学
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DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·11068
·
IF 15.7
Meng Shengnan,Wang Hongxing,Zhao Qian,Lü Xiaozhou,Yu Jianyong,Si Yang
Transpiration cooling is a thermal management technique that utilizes the phase change of liquid coolant to effectively dissipate heat. Porous ceramic media play a crucial role in this cooling process by facilitating liquid transport and heat exchange; however, their intermittent capillary action and inter-grain phonon scattering significantly hinder rapid cooling. Here, we propose a strategy to create AlN-based nanofiber aerogel as a transpiration thermo-cooler, featuring vertically aligned channels and monocrystalline nanofibers by combining nanoengineering and multiscale structural assembly techniques. Benefiting from the unconstrained capillarity of aerogel channels, our thermo-coolers exhibit a fast liquid transport rate of up to 8.33 ± 0.026 mm s −1 , surpassing that of state-of-the-art porous media by one to two orders of magnitude. In addition, the enhanced phonon conduction properties of single-crystal AlN nanofibers enables thermo-coolers to achieve a fast cooling rate of 156.8 °C s −1 , outperforming advanced cooling materials by a factor of five and making them ideal for various thermal management applications.
研究领域:
材料科学
·
热工工程
·
纳米技术
·
陶瓷学
·
传热学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yun Zhu,Fanping Meng,Nannan Sun,Liyuan Huai,Muqin Wang,Feihong Ren,Zhendong Li,Zhe Peng,Feng Huang,Hui Gu,Deyu Wang
Sponge-like lithium (Li) deposition results in high-surface-area morphology that harmfully accelerates the side reactions between Li and electrolyte, arousing serious safety issues of next high energy density Li metal batteries (LMBs). Herein, we propose a strategy to suppress the sponge-like Li deposition by plating Li metal on aluminum nitride (AlN)-modified substrates. For a practical Li deposition of 4 mAh cm–2 on a AlN-modified copper (Cu) electrode, the roughness and thickness of the as-deposited Li layer are only ∼10% and ∼50% of those for the Li layer deposited on bare Cu. Only based on the compacted Li deposition layer without any other protective remedies, the AlN-modified Cu electrode could provide a Li cycling life of 5 times longer than that on bare Cu, and an AlN-modified carbon felt was proved as an efficient interlayer to boost the cycling stability of Li||LiFePO4 batteries. These results demonstrate the high importance of suppressing the sponge-like Li deposition for high energy density LMBs.
研究领域:
材料科学
·
储能
·
电化学
·
锂金属电池
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DOI
高影响因子
Molecular Catalysis
·
2020
·
IF 3.687
Zhen-Hong He,Yong-Chang Sun,Kuan Wang,Zhong-Yu Wang,Pan-Pan Guo,Chong-Shan Jiang,Man-Qing Yao,Zhu-Hui Li,Zhao-Tie Liu
N -heterocycles with quinoline and tetrahydroquinoline structures are highly important in pharmaceutical and chemical industries, and their highly efficient mutual transformations are vital but still challenging. In the present work, AlN supported redox cobalt catalysts (Co 3 O 4 /AlN and Co/AlN) were prepared, which could achieve the reversible aerobic oxidative dehydrogenation/hydrogenation of N -heterocycles with good performances. The catalytic performances were stem from the strong interaction between Co species with AlN support, which were confirmed by the characterizations of Raman, XPS, UV–vis DRS, and H 2 -TPR etc . Both of the catalysts showed good stabilities and reusabilities for the titled reactions. Besides, the gram-scale experiments achieved with good yields to corresponding products, revealing the present protocol possesses great potential applications in industry. The strategy of using redox Co-based catalyst not only provides a potential catalyst for the reversible hydrogenation/oxidative dehydrogenation reactions but also replenishes methods for constructing of other redox catalyst, especially with AlN as a carrier.
研究领域:
化学工程
·
催化科学
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DOI
高影响因子
Nano Energy
·
2019
·
IF 15.548
Zhe Peng,Feihong Ren,Shanshan Yang,Muqin Wang,Jie Sun,Deyu Wang,Wu Xu,Ji-Guang Zhang
Lithium (Li) metal battery is one of the ideal candidates for the next-generation high-energy-density batteries , but its practical application is still plagued by its large volume change, low coulombic efficiency (CE), and safety issues related to dendrite growth. This work describes a potential solution to these issues using a cross-linked Li 9 Al 4 -Li 3 N-AlN (LLA) structure as a stable host for Li metal anode . The in situ-formed uniform Li 9 Al 4 and Li 3 N sites on AlN nano-clusters can suppress dendrite growth during the Li plating/stripping process. The intrinsic lithiophilicity of Li 9 Al 4 sites with adjacent Li 3 N attracts Li + ions for fast migration and uniform plating/stripping. These unique features lead to dimensional stability of Li@LLA composite anodes (1540 mAh g −1 and 1600 mAh cm −3 ). High-rate, high-capacity cycling of Li metal anodes has been maintained with a CE of ~98% in carbonate-based electrolytes. High capacity retention of 90.1% is achieved for a Li@LLA||LiNi 0.8 Co 0.1 Mn 0.1 O 2 full cell at the 200th cycle. Therefore, the LLA structure with a simple fabrication process could be a promising candidate to enhance the safety of next-generation Li metal batteries.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 24
·42178-42185
·
IF 5.6
Hai Jiang,Qi-Feng Cai,Xiao-Hong Wang,Wen-Zhong Lu
Si 3 N 4 whiskers and nanocarbon powder were added to AlN–Y 2 O 3 –YF 3 ceramics, and the microstructure, thermal conductivity and flexural strength of the samples were studied. Instead of working as one-dimensional reinforcement in AlN ceramics, the Si 3 N 4 whiskers formed a β-Sialon phase that significantly strengthened the grain boundaries, thereby increasing the flexural strength of AlN sample. The added carbon powder formed a transition layer at the grain boundaries and further strengthened them. The fracture mode of the samples changed from intergranular to transgranular, and their flexural strength was increased. Moreover, carbon powder reduced the concentration of aluminum vacancy and improved the thermal conductivity of the samples. Therefore, the flexural strength and thermal conductivity of AlN ceramics with carbon powder and Si 3 N 4 whisker additives were synergistically increased to 366.4 ± 16.4 MPa and 203.5 ± 3.16 W m −1 K −1 , respectively.
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高影响因子
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