MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
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2025
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IF 1.8
Zhang Kunpeng,Cao Yi,Feng Guang,Xue Wei,Li Fengping,Liao Yanfei
Liquid metal, which has the advantages of high conductivity, fluid morphology at room temperature, excellent ductility and plasticity, has been widely used as electrodes or functional structures in flexible electronics. The existing flexible functional components are mostly flexible hybrid electronics, that is, the substrate is flexible and the functional components are rigid. In order to ensure the long-term stable operation of devices, the reliable encapsulation of liquid metal and traditional rigid components (such as wires, pins, etc.) and the prevention of liquid metal leakage are the key steps for the preparation of liquid metal based flexible electronics. In this paper, the liquid metal and rigid components are encapsulated based on the strong adhesive interface characteristics of the addition polymerization of ethyl α-cyanoacrylate under the catalysis of water. Taking the liquid metal encapsulation in 3D printing acrylamide hydrogel flexible substrate as an example, the effects of ethyl α-cyanoacrylate on the bonding strength of hydrogel, the peel strength of copper wire and the encapsulation performance were studied. The results showed that the bond breaking stress of ethyl α-cyanoacrylate was more than 200 kPa, and the peel strength was more than 160 N/m. Lastly, taking the liquid metal strain sensor as the application object, the reliability of ethyl α-cyanoacrylate encapsulation was demonstrated. This study provides a guarantee for the reliable operation of flexible electronic devices based on liquid metal.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Li Sun,Yuanyuan Diao,Yuejin Shan,Yuan Zhi,Hua Zhang,Binlin Dou,Weijia Huang
Based on a normal copper wire, an effective photocatalyst (ACW) for the 4-nitrophenol (4-NP) reduction is successfully synthesized by an in-situ redox method. The constitution of ACW is similar to “ants on a tree”, i.e., dense Au and Cu nanoparticles (NPs) are loaded on the copper wire surface covered by submicro-sized Cu cubes. Employing ACW as photocatalyst, the conversion efficiency of 4-NP can achieve to 100% at 2.5 min and the rate constant for the 4-NP reduction can reach up to 1.45 min −1 . Moreover, ACW exhibits satisfactory reusability for 25 cycles and stability in 12 months. These excellent performance can be attributed to the synergistic effect of Au NPs, Cu NPs and the Cu wire surface covered with submicro-sized cubes. Clearly, the above in-situ redox method provides a facile route to prepare metal NPs-supported bulk photocatalysts. Meanwhile, as-synthesized ACW can be a promising photocatalyst candidate for the practical treatment of 4-NP.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2015
·Vol. 140
·期 8
·2815-2822
·
IF 4.107
Sha Zhu,Xiaoli Zhang,Jingcheng Cui,Yu-e Shi,Xiaohong Jiang,Zhen Liu,Jinhua Zhan
Perchlorate, which causes health concerns because of its effects on the thyroid function, is highly soluble and mobile in the environment. In this study, diethyldithiocarbamate (DDTC)-modified silver nanoplates were fabricated on a copper wire to perform the on-site microextraction and detection of perchlorate. This fiber could be inserted into water or soil to extract perchlorate through electrostatic interaction and then can be detected by a portable Raman spectrometer, owing to its surface-enhanced Raman (SERS) activity. A relatively stable vibrational mode (δ(HCH)(CH3), (CH2)) of DDTC at 1273 cm−1 was used as an internal standard, which was negligibly influenced by the absorption of ClO4−. The DDTC-modified Ag/Cu fiber showed high uniformity, good reusability and temporal stability under continuous laser radiation each with an RSD lower than 10%. The qualitative and quantitative detection of perchlorate were also realized. A log–log plot of the normalized SERS intensity against perchlorate concentration showed a good linear relationship. The fiber could be also directly inserted into the perchlorate-polluted soil, and the perchlorate could thereby be detected on site. The detection limit in soil reached 0.081 ppm, which was much lower than the EPA-published safety standard. The recovery of the detection was 105% and comparable with the ion chromatography. This hyphenated method of microextraction with direct SERS detection may find potential application for direct pollutant detection free from complex sample pretreatment.
研究领域:
环境科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2018
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IF 6.945
Yaqiang Ji,Jinqi Xie,Jian Wu,Ying Yang,Xian-Zhu Fu,Rong Sun,Ching-Ping Wong
Cu wires are coated by porous/dense Ni bi-layers as current collectors through electroless plating and hydrogen bubble dynamic template electrodepostion methods. The unique coaxial composite current collectors can be beneficial from the high electrical/thermal conductivity of metal Cu core and high corrosion resistance of dense metal Ni coating as well as porous Ni substrate for growth of active materials. Furthermore, the metal wire current collectors have excellent flexibility and mechanical strength . Highly flexible solid-state fiber supercapacitors are then fabricated by binder-free integrated electrodes of hierarchical MnCo 2 O 4 nanothorns grown on porous/dense Ni bi-layers coated Cu wires. The fiber supercapacitors reach capacitance of 20.6 mF cm −1 (54.8 mF cm −2 ) and energy density of 4.8 μWh cm −1 (12.8 μWh cm −2 ) at a power density of 32.25 μW cm −1 (110 μW cm −2 ). Moreover, the twist fiber supercapacitors show good rate capability and cycling stability. The outstanding performances of the fiber supercapacitors might be attributed to the hierarchically nanothorns MnCo 2 O 4 active materials and the unique porous/dense Ni coated Cu wire current collectors. Our results can provide a novel strategy to design flexible nanostructure fiber supercapacitors for energy storage applications in future wearable electronics .
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 32
·8329-8335
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IF 4.696
Jingping Liu,Cheng Yang,Peichao Zou,Rui Yang,Chao Xu,Binghe Xie,Ziyin Lin,Feiyu Kang,Ching Ping Wong
Conventional electronic circuit wiring methods involve subtractive processes such as etching the copper foils, and thus are inefficient and cause serious environmental problems. Printed electronics technology is expected to be more environmentally benign and have lower cost, due to its additive characteristics. In this paper, we present a simple and efficient strategy to fabricate high performance copper metal fine circuits by a galvanic replacement deposition method. Zinc nanoparticles filled epoxy resin paste is printed onto the substrate film as the seed layer; with a subsequent simple galvanic replacement reaction between Zn and Cu2+, we can obtain a conductive Cu layer that can be further thickened by electroplating. The as-prepared circuits show bulk Cu conductivity, excellent flexibility, adhesion strength and pattern resolution. By adjusting the processing parameters, this technology is suitable for various practical applications, such as flexible circuit boards, RFID tags, touch panels, membrane switches, and photovoltaics, making it a promising solution for low-cost and environmentally friendly fabrication for flexible electronic devices.
研究领域:
材料科学
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电气工程
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纳米技术
·
印刷电子
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Xiaoguang Jiao,Zhongtai Feng,Qingze Jiao,Licun Xu,Chengjie Li,Bingzhi Guo,Caihong Feng,Yun Zhao
Fluorinated polyurethane (FPU) with a different fluorine content was prepared using perfluoropolyether glycols, poly(propylene glycol), and isophorone diisocyanate as starting materials, and 1,4-butanediol as a chain extender. The structure and molecular weight of FPU were characterized by Fourier transform infrared spectroscopy and gel permeation chromatography. A solution of FPU in xylene and cresol was then coated on copper wires using an enameled machine to prepare enameled wires. The friction coefficient and adhesion performance of the enameled wires were tested. The friction coefficient of the as-prepared enameled wires reached 0.095, which was much lower than 0.149 of the polyurethane without fluorine. FPU-based enameled wires also showed good mechanical performances and increased breakdown voltages. In addition, FPU exhibited good hydrophobic and oleophobic characterization.
研究领域:
材料科学
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化学工程
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电气工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF FOOD SCIENCE
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2024
·
IF 3.2
Xi Wu,Chenggang Geng,Weiwei Cheng,Zhenjiong Wang,Yan Zhang,Di Wu,Xiaozhi Tang
In this work, an ultrasensitive electrochemical sensor based on Zr-MOF-SH/rGA/NPG was developed for the first time for the rapid determination of mercury ions. First, nanoporous gold (NPG) film was covered on the glassy carbon electrode (GCE) to offer a desirable substrate. Then, Zr-MOF-SH/rGA composites were dropped on the NPG film to form a modified electrode. Mercapto functionalized MOFs (Zr-MOF-SH) showed strong adsorption capability toward mercury ions, and the unique structure of reduced graphene oxide aerogel (rGA) provided various sites for coupling with Zr-MOF-SH as well as improved the electrochemical activity. As a consequence of the synergistic effect of Zr-MOF-SH, rGA, and NPG, the optimized Zr-MOF-SH/rGA/NPG/GCE sensor showed excellent detection performance toward mercury ions with a linear range from 0 to 200 nM and a low limit of detection of 1.4 nM. Meanwhile, the fabricated electrochemical sensor exhibited outstanding stability, reproducibility, and anti-interference ability. To verify the practical applicability, the Zr-MOF-SH/rGA/NPG/GCE was applied for the determination of mercury ions in real rice samples with desirable recovery rates ranging from 98.8% to 108.3%.
研究领域:
电化学
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环境科学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2024
·
IF 4
Xueqi Duan,Guona Li,Zhijian Jia,Hongzhen Xie,Xing Li
Copper is an essential element in the human body. Excess accumulations of copper, however, would become a potential threat. Therefore, it is of great significance to detect copper ions. Owing to their controllable morphology, dispersal characteristics, high extinction coefficient, and easily functionalized surfaces, gold nanoparticles (AuNPs) have been highly employed as attractive sensing probes for environmental and biological analyses. We herein propose an eco-friendly colorimetric strategy based on AuNPs modified with 3-pyridinylboronic acid (PA) for sensitive and selective detection of copper ions (Cu 2+ ) in water at trace level. The color changes of the system from wine-red to gray-blue with increasing amounts of copper ions is due to the binding of AuNPs modified with 3-pyridinylboronic acid to copper ions, which in turn leads to the aggregation of AuNPs with fine anti-interference. Strengths of the work: 1) rapid response time without complex pre-treatment; 2) high sensitivity with low limit of detection (LOD) and the good linear relationship ( R 2 = 0.98, LOD = 3.0 μM by the naked eye and 72 nM by ultraviolet-visible spectroscopy); 3) high selectivity under other interfering ions. In addition, the detection mechanism of this work has been successfully confirmed by density functional theory (DFT), transmission electron microscopy (TEM), dynamic light scattering (DLS), X-ray diffraction (XRD), Zeta potential analysis and ultraviolet-visible spectroscopy (UV–vis).
研究领域:
环境科学
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分析化学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 192
·期 1
·1-12
·
IF 5.3
Liu Xiang,Li Huijun,Sun Junjun,Shi Jianchao,Xu Zhouqing,Wang Yan
A HPU-23@Ru@Tb-NH 2 sensor array with light-driven oxidase-mimicking activity and triple-emission fluorescence was developed. It was composed of a Tb 3+ -functionalized metal organic framework and Ru(bpy) 3 2+ and applied to the simultaneous detection of Hg 2+ , ClO − , and PO 4 3− via differently responsive channels. HPU-23@Ru@Tb-NH 2 had a photoresponsive colorimetric response toward Hg 2+ with a LOD as low as 4.18 nM. In addition, the three emissions of the HPU-23@Ru@Tb-NH 2 sensor array were influenced by ClO − and PO 4 3− to varying degrees, causing remarkably distinguishable responses for the fluorescence channels to discriminate ClO − and PO 4 3− from each other. The detection limits of ClO − and PO 4 3− were 12.26 µM and 0.197 nM, respectively. Therefore, this work demonstrates the feasibility of multi-emission and multi-mode sensing platform, which is able to combine the advantages of different strategies for solving the problems of various toxic substances coexisting in the environment while meeting the needs of accurate and precise results and no side interferences. Graphical
研究领域:
分析化学
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环境科学
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生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Guangyuan Chen,Linzhen Wu,Zeru Wang,Ruixi Liu,Chuan Tan,Yi Tan,Yawen Liu,Miaomiao He,Hao Zhang,Yikun Huang,Jiongzhi Zhu,Tao Duan,Lin Zhu
The capture of radioactive gaseous iodine is essential for the sustainable development of nuclear energy and the long-term safe supply of nuclear fuel. However, the presence of nitrogen oxides in the exhaust gas generated during spent fuel reprocessing poses significant challenges to the stability of iodine adsorbents. It is crucial to consider the impact of NOx on the structure and adsorption performance of the materials. We report here the development of an aluminum-based metal–organic framework (MOF), CAU-1, engineered for efficient iodine capture. Synthesized through a cost-effective and straightforward method, CAU-1 exhibits excellent structural stability and robust adsorption performance, with a maximum iodine vapor adsorption capacity of 1277.18 mg/g at 130 °C and methyl iodide adsorption capacity of 533.10 mg/g, highlighting its potential for efficient iodine vapor removal. Notably, CAU-1 retains its structural integrity and iodine adsorption performance even in the presence of 5 % NO 2 , maintaining high adsorption capacities for I 2 (1129.41 mg/g) and CH 3 I (436.79 mg/g). Mechanistic analysis revealed the key role of the –NH 2 group in the iodine adsorption process. Additionally, co-adsorption studies with I 2 and NO 2 showed that CAU-1 can still capture iodine in the form of both I 2 and I 3 - in the presence of NO 2 . This study illustrates the potential of CAU-1 as an effective industrial adsorbent for removing iodine from NO 2 -containing gas streams.
研究领域:
材料科学
·
核能工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Jiankang Li,Liuquan Lin,Sen Zhou,Xiaoming Yang
Room-temperature phosphorescence carbon dots (CDs) show the highlighted advantages in chemical sensing and bioimaging owing to its long lifetime, however, acquiring the efficient phosphorescence of carbon dots is still encountering difficulty due to the spin prohibition. Here, we synthesized one type of CDs through one-step hydrothermal method. To be specific, the CDs displayed the blue fluorescence in aqueous, and emitted the bright green phosphorescence when being coated on the filter paper. Importantly, introducing coumarin to the CDs resulted in the distinct quenching of both its fluorescence and phosphorescence. Based on this phenomenon, we successfully established a dual-channel detection of coumarin. The fluorescence detection channel exhibited a linear range of 5–350 μM with a detection limit of 0.196 μM, while the phosphorescence detection channel achieved a linear range of 50–1000 μM with a detection limit of 0.268 μM. The further investigation revealed that IFE and SQE were mainly responsible for the fluorescence quenching of CDs, while the phosphorescence quenching was originated from the increased energy gap between the singlet and triplet states (ΔE ST ) of CDs, thus obstructing the ISC process. Moreover, we employed the CDs as the phosphorescent ink for anti-counterfeiting.
研究领域:
材料科学
·
分析化学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Jiaxing Li,Jiongming Chen,Ying Chen,Jialei Ren,Jianan Li,Liankui Wu,Hongwei Liu,Fahe Cao,Qingqing Sun
This study develops a new shot peening method, i.e., copper powder ultrasonic shot peening, and investigates its antibiofouling effect on commercially pure titanium grade 2 (TA2) alloy in seawater. The results indicate that adding Cu powder during ultrasonic shot peening can form a Cu-containing layer with a thickness 1–2 μm on the surface of TA2 alloy, primarily in the form of nanocrystals. This Cu-containing layer exhibits a 90 % antifouling efficiency against Pseudomonas aeruginosa and an 85 % efficiency against Aspergillus terreus , mainly due to the release of Cu ions during immersion. Electrochemical corrosion test results show that corrosion rate of this anti-fouling layer is two orders of magnitude higher than the substrate alloy, which significantly enhances the release of Cu ions and thereby improving the antifouling capability. Tensile test results show that Cu powder peening similarly improves the mechanical properties of TA2 alloy as conventional peening.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）