Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 5
·1-11
·
IF 23.2
Wen Xiaohong,Zhao Zengcai,Chen Yuchang,Shan Xinzhi,Zhao Xuefeng,Gao Xiumin,Zhuang Songlin
Multifunctional integrated flexible electronic skin (e-skin) is the essential medium for information exchange between humans and machines. Especially, the proximity/pressure/strain sensing has become a technological goal for various emerging wearable electronic devices, such as biomonitoring devices, smart electronics, augmented reality, and prosthetics. Herein, a stretchable hybrid electronic network-based e-skin is presented, fabricated by embedding 3D hollow MXene spheres/Ag NWs hybrid nanocomposite into PDMS, which can effectively avoid the electrode falling off due to stress concentration. This e-skin works in noncontact mode (proximity-negative capacitance) and contact mode (pressure-positive capacitance and strain-resistance) for multiplex detection of random external force stimuli without mutual interference. The macroscopic physical structure of stretchable electrodes and the microscopic hybrid three-dimensional conductive network jointly contribute to the good sensing performance of the device. This work provides an effective and universal strategy for the application of wearable intelligent electronic products that demand noncontact interaction and multimodal tactile perception.
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高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 6
·419
·
IF 21.8
Yu Sike,Bao Yan,Zhang Wenbo,Gao Lu,Guo Ruyue,Liu Chao,Ma Jianzhong
Developing a textile capable of achieving infrared stealth under Joule heating conditions is critical for enhancing the operational effectiveness and survivability of combat troops in challenging climates. Here, a novel type of silver nanowires/bacterial cellulose/carbon fibers composite fabric (ABCF) inspired by the multi-layered structure of beetle elytra and the dual-mode thermal management system was designed for infrared stealth at Joule heating via a facile sewing method. The introduction of an inner layer consisting of carbon fibers serves as an effective heater producer, demonstrating excellent Joule heating performance (~ 210 °C at 3 V). The interlayer made from bacterial cellulose aerogel exhibits thermal insulation properties (0.028 W/m·K) and flexibility, functioning as a barrier that mitigates heat transfer through its layer-stacking structure under directional thermal conduction. Meanwhile, the upper layer comprised of silver nanowires provides low emissivity (~ 0.15) and cooperates with the aerogel to achieve infrared stealth. As a result, ABCF achieves both a significant reduction in thermal radiation temperature for targets and long-term infrared stealth stability (~ 55 °C maintained for 8400 s), with experimental feasibility validated through COMSOL simulations. Impressively, ABCF has been effectively utilized in the construction of tents, further highlighting its potential for multifunctional applications in the field of thermal management.
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高影响因子
Advanced Composites and Hybrid Materials
·
2025
·
IF 21.8
Deng Tanjun,Zheng Ao,Zheng Yumeng,Zhao Xiaoxian,Wang Zengguang,Wang Haoyu,Wang Yun,Hou Lingli,Liu Jinling,Tan Sirui,Shen Zhengyu,Cao Lingyan
Infected skin wounds represent a significant healthcare challenge, affecting millions of patients worldwide and imposing substantial economic burden on healthcare systems. Traditional wound dressings and systemic antibiotics face critical limitations including lack of tissue adhesion in wet environments, increasing antibiotic resistance, and inability to promote tissue regeneration, resulting in suboptimal healing outcomes. In this research, we formulated an injectable composite hydrogel comprising dopamine-modified sodium alginate, chondroitin sulfate, and silk fibroin as the primary matrix, with magnesium oxide (MgO) nanoparticles and human umbilical mesenchymal stem cells (hUMSCs)-derived exosomes (Exo) as functional components. The resultant ACS/MgO/Exo hydrogel exhibits effective tissue adhesion, superior hemostatic capability, mild-photothermal therapy (M-PTT)-mediated antibacterial activity, and enhanced angiogenesis. In vitro studies demonstrated that the hydrogel effectively reduced bleeding time, eliminated bacteria through M-PTT, and significantly enhanced endothelial tip cell activation, proliferation, motility, and vascularization through activation of the PI3K-AKT-NF-κB-VEGF signaling cascade. In vivo experiments with infected full-thickness defect model confirmed the composite hydrogel’s ability to accelerate wound closure, eliminate bacterial infection, enhance collagen deposition, and promote vascularization while simultaneously modulating the inflammatory response. This multifunctional hydrogel represents a promising therapeutic platform for complex infected wound management, addressing the critical clinical need for integrated solutions that simultaneously achieve adhesion, hemostasis, infection control, and tissue regeneration.
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Advanced Fiber Materials
·
2025
·
IF 21.3
Wu Hong,Li Chun,Zhao Pengxin,Zhu Lingfeng,Li Yitong,Ghomi Erfan Rezvani,Cao Hanlin,Zhang Mingyang,Weng Xiaoxuan,Zhang Qingling,Wei Xiaoxiao,Zhang Zhenfang,Ramakrishna Seeram,Liu Chengkun
Flexible mechanical sensors offer extensive application prospects in the field of smart wearables. However, developing highly sensitive, flexible mechanical sensors that can simultaneously detect strain and pressure remains a significant challenge. Herein, we present a flexible mechanical sensor based on AgNPs/MWCNTsCOOH/PDA/PU/PVB nanofiber-covered yarn (AMPPPNY) featuring a DNA-like double-helix wrinkled structure. The sensor is fabricated by electrospraying polyvinyl butyral (PVB) onto a pre-stretched double-helix elastic yarn, followed by electrospinning a polyurethane (PU) nanofiber membrane and inducing the self-polymerization of dopamine (DA) to create an adhesive layer. Then, one-dimensional carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) and zero-dimensional silver nanoparticles (AgNPs) are dispersed onto the structure, synergistically forming a stable conductive network for efficient signal transmission. The integration of conductive fillers with different dimensionalities and DNA-like double-helix wrinkled structure endows the sensor with high strain sensitivity (gauge factor of 11,977) in the strain range of 0–310% and high pressure sensitivity (0.475 kPa −1 ) in the pressure range of 0–2 kPa. Moreover, the fabricated sensor exhibits rapid response and recovery times (130 ms/135 ms) and outstanding cyclic stability (over 10,000 cycles of both strain and pressure). Next, the fibrous sensor is weaved into a large-area fabric, and the developed smart textiles demonstrate impressive performance in detecting both subtle and large human movements. The proposed sensor is a promising candidate for flexible wearable applications. Graphical
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Advanced Fiber Materials
·
2025
·
IF 21.3
Wu Ruilin,Wang Rui,Liu Shixin,Wang Menggang,Mo Runwei
Nanocomposite technology is recognized as a general and effective strategy to enhance the performance of flexible energy storage devices. However, the enhancement of flexible batteries in nanocomposites is usually much lower than expected, which is mainly attributed to the poor interfacial interactions between active material and conductive substrate as well as sluggish Na + diffusion kinetics and complex assembly techniques. It remains a huge challenge to simultaneously achieve good mechanical properties, excellent electrochemical performance, and high safety in flexible batteries. Here, we developed an interface engineering strategy to prepare a high-strength and high-toughness quasi-solid fiber battery using direct ink writing 3D printing, which was achieved by introducing borate ester dynamic crosslinking as bridging interaction with self-healing properties. This configuration exhibited a remarkably enhanced energy density (104 Wh kg −1 ) and high power density (20.8 W kg −1 ), with excellent strain (exceeding 25%) and outstanding thermal stability (200 °C), which exceeds those of previously reported. Density functional theory calculations further reveal the mechanism by which the interface engineering-based borate ester dynamic crosslinking affects the performance of fiber battery. Based on this excellent performance, fiber batteries are woven into a mobile phone pouch for wireless charging of wearable electronic devices. This work provides an effective route toward high-performance flexible energy storage devices for a broad range of applications. Graphical
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POLYMER BULLETIN
·
2025
·
IF 4
Zhao Xuan,Yang Liu,Sun Xinyu,Zhou Kun,Yuan Shuai
A novel class of 3-methylphenol alkoxy aluminum complexes was developed for the ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) under mild conditions (60 °C, 30 min). Through systematic optimization of Al/CL molar ratios (5:1000 ~ 4:1000), monomer concentrations (1 mol/L), and reaction parameters, high polymer yield (99.9% ± 0.1%) was achieved, yielding polycaprolactone (PCL) with tunable molecular weights (M n up to 34 kg/mol) and narrow dispersity (PDI = 1.38). Structural characterization via 1 H NMR and FTIR confirmed successful PCL formation. GPC analysis validated controlled chain growth and uniformity (PDI < 1.5), while thermal properties were assessed via DSC and TGA, showing semicrystalline behavior and high thermal stability. Kinetic studies showed linear molecular weight progression with polymer yield, while sequential monomer feeding experiments confirmed living polymerization characteristics, with M n increasing proportionally and maintaining low PDI. Compared to conventional metal-based systems, this catalytic platform operates at lower temperatures with reduced toxicity risks, enabling energy-efficient synthesis of biodegradable polyester for biomedical and packaging applications.
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高影响因子
TOPICS IN CATALYSIS
·
2025
·
IF 3
Wang Shuai,Xue Tairui,Hai Luhang,Song Hua
The development of highly active and stable non-precious catalysts for selective hydrogenation of phenol to cyclohexanol is significant but challenging. Here, CeO 2 nanorod supported Ni nanoparticles with oxygen vacancy structural defects were constructed via direct pyrolysis of metal organic framework (MOFs) for catalytic hydrogenation of phenol. Results showed pyrolysis temperature and time had an obvious effect on the catalytic performance. Under the reaction conditions of 160 °C, 2 MPa, 2 h, Ni@C/CeO 2 -1 h − 400 °C catalyst prepared at temperature of 400 °C and time of 1 h exhibited the best catalytic performance with 94.7% phenol conversion and 100% cyclohexanol selectivity due to the highly dispersed Ni nanoparticles. Further increase in pyrolysis temperature or extension of pyrolysis time both resulted in the decrease of the catalytic performance. In addition, results also found the Ni@C/CeO 2 -1 h − 400 °C catalyst with a rod-like structure displayed higher phenol conversion than purchase CeO 2 supported Ni (Ni@C/CeO 2 -pur) catalyst. The enhanced catalytic performance of Ni@C/CeO 2 -1 h − 400 °C catalyst is ascribed to the higher concentration of oxygen vacancies. This work provides the design and synthesis of highly efficient non-noble catalysts for the production of value-add chemicals from biomass.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2025
·
IF 3
Cheng Jiahao,Yang Yichen,Wang Lei,Shen Wenjian,Huang Shangwei,Xu Jianlin,Yao Jun,Liang Guijie,Li Bin,Peng Yong,Li Zaifang,Liang Ying,Li Wangnan
Perovskite solar cells (PSCs) have drawn widespread concern for their high efficiency and facile low-temperature solution fabrication, promising for the alternative low-cost photovoltaic energy. However, commercial deployment requires resolution of persistent stability issues and electrical hysteresis effects in PSCs. We demonstrate planar PSCs configuration using a stacked SnO2/TiO2 electron transport layer, which exhibits a cascadealigned energy level, achieving an efficiency of 23.54% with a reduced hysteresis (index: 0.12) and remarkable stability (>90% efficiency retention beyond fifty days at 25% relative humidity without encapsulation). Photoluminescence and electrical characterizations suggest that the performance enhancement is ascribed to the synergetic optimization from suppressing the defective interface and promoting carrier transfer and blocking. More importantly, detailed transient absorption characterization reveals that the use of stacking n-type materials can decrease the hot-carrier cooling dynamics, improve the carrier transfer, and eliminate nonradiative recombination in PSCs. These results suggest that stacking n-type layers could enable superior overall performances compared to common electron transport layers (TiO 2 and SnO 2 ), providing facile routes for fabricating efficient PSCs with high stability.
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Nature Photonics
·
2024
·Vol. 18
·期 11
·1185-1194
·
IF 32.3
Xu Qingyang,Zhang Jianyu,Sun Jing Zhi,Zhang Haoke,Tang Ben Zhong
Manipulating the electronic structure of organic functional materials by through-space conjugation (TSC) to achieve desirable photophysical properties has been a long-standing research focus. Although the working mechanisms of TSC have been demonstrated, the roles that the intrinsic molecular skeleton and extrinsic aggregates play remain unclear. Here four trinaphthylmethanol isomers and four trinaphthylmethane (TNM) isomers with varying connecting sites of naphthalene were synthesized, and their photophysical properties were systematically investigated. The strength of TSC was found to rise from 222-TNM to 111-TNM with the increased number of 1-naphthalene units. In particular, 111-TNM was found to support efficient long-wavelength clusteroluminescence with an absolute quantum yield of 55%. Experimental and theoretical results revealed that the inherent attribute of robust intramolecular interactions within individual molecules is fundamental for ultrastrong TSC, and intermolecular interactions play an auxiliary role in fortifying and stabilizing intramolecular interactions. This work reveals the intrinsic and extrinsic factors for manipulating TSC and provides a reliable strategy for constructing non-conjugated luminogens with efficient clusteroluminescence.
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Nature Photonics
·
2024
·
IF 32.3
Liu Gaochao,Chen Weibin,Xiong Zhan,Wang Yuzhen,Zhang Shuai,Xia Zhiguo
High-power broadband near-infrared (NIR) light sources based on laser-excited phosphors are highly desirable for photonics applications in night vision, biomedical imaging and sensing; however, the inherent energy gap law poses a great challenge for the development of efficient NIR luminescent materials. Herein we report a translucent MgO:Cr 3+ ceramic fabricated by spark plasma sintering, which exhibits a broadband NIR emission peak at 810 nm, with an external quantum efficiency of 81% and ultra-high thermal conductivity of 52 W m –1 K –1 . When pumped with a blue laser, the MgO:Cr 3+ ceramic provides an output power exceeding 6 W with a light conversion efficiency of 29%. This laser-driven broadband NIR light source makes it possible to perform NIR imaging with a spatial resolution of 6 lp mm –1 , and is a promising technology for emerging imaging applications.
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Light-Science & Applications
·
2024
·Vol. 13
·期 1
·1-12
·
IF 20.6
Liu Bo-Mei,Lin Yue,Liu Yingchun,Lou Bibo,Ma Chong-Geng,Zhang Hui,Wang Jing
Materials capable of dynamic persistent luminescence (PersL) within the visible spectrum are highly sought after for applications in display, biosensing, and information security. However, PersL materials with eye-detectable and excitation-wavelength-dependent characteristics are rarely achieved. Herein, a nonstoichiometric compound CaGa x O 4 :Bi ( x < 2) is present, which demonstrates ultra-long, color-tunable PersL. The persistent emission wavelength can be tuned by varying the excitation wavelength, enabling dynamic color modulation from the green to the orange region within the visible spectrum. Theoretical calculations, in conjunction with experimental observations, are utilized to elucidate the thermodynamic charge transitions of various defect states, thereby providing insights into the relationship between Bi 3+ emitters, traps, and multicolored PersL. Furthermore, the utility of color-tunable PersL materials and flexible devices is showcased for use in visual sensing of invisible ultraviolet light, multicolor display, information encryption, and anti-counterfeiting. These discoveries create new opportunities to develop smart photoelectric materials with dynamically controlled PersL for various applications.
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Light-Science & Applications
·
2024
·Vol. 13
·期 1
·1-11
·
IF 20.6
Li Shi-Long,Chen Zhao-Yi,Chen Peng,Hu Wei,Huang Chaohong,Li Sen-Sen,Hu Xuejia,Lu Yan-Qing,Chen Lu-Jian
Liquid crystals are a vital component of modern photonics, and recent studies have demonstrated the exceptional sensing properties of stimuli-responsive cholesteric liquid crystals. However, existing cholesteric liquid crystal-based sensors often rely on the naked eye perceptibility of structural color or the measurement of wavelength changes by spectrometric tools, which limits their practical applications. Therefore, developing a platform that produces recognizable sensing signals is critical. In this study, we present a visual sensing platform based on geometric phase encoding of stimuli-responsive cholesteric liquid crystal polymers that generates real-time visual patterns, rather than frequency changes. To demonstrate this platform’s effectiveness, we used a humidity-responsive cholesteric liquid crystal polymer film encoded with a q -plate pattern, which revealed that humidity causes a shape change in the vortex beam reflected from the encoded cholesteric liquid crystal polymers. Moreover, we developed a prototype platform towards remote humidity monitoring benefiting from the high directionality and long-range transmission properties of laser beams carrying orbital angular momentum. Our approach provides a novel sensing platform for cholesteric liquid crystals-based sensors that offers promising practical applications. The ability to generate recognizable sensing signals through visual patterns offers a new level of practicality in the sensing field with stimuli-responsive cholesteric liquid crystals. This platform might have significant implications for a broad readership and will be of interest to researchers working in the field of photonics and sensing technology.
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