WASTE MANAGEMENT
·
2023
·
IF 8.1
Mengxin Lu,Yongjie Xue,Hui Zhao,Xiaoshan Zhang,Teng Wang
Secondary sulfur pollution in dyeing sludge (DS) during drying and incineration is a major environmental problem necessitating in-situ control. To robustly immobilise sulfur during drying–incineration, the authors introduce an electromagnetic induction (EMI) drying method and reveal the corresponding migration and conversion of sulfur in DS. The EMI-drying efficiency reached 10.69%/min, five times that of thermal drying. EMI drying increases the relative sulfoxide ratio from that of thermal drying. In a sludge–sulfur model, the proposed treatment promoted the oxidation and decomposition of organic sulfur without noticeably affecting the inorganic sulfur. The selective oxidation process during EMI drying promotes sulfur stabilisation in dried DS, decreasing the performance and stability of DS combustion. The sulfur-containing pollutants released during the incineration of DS mainly contain H 2 S, followed by CH 3 SH and SO 2 . EMI drying increases the outputs of SO 2 and CH 3 SH but decreases the outputs H 2 S and total sulfur compared with the outputs of thermal drying. Under the sulfur-model conditions, EMI promoted the conversion of inorganic sulfur to sulfur-containing gases (especially H 2 S) during incineration. In contrast, the sulfur stabilised by partial oxidation of organic sulfur in the EMI-dried DS was not easily converted to gaseous sulfur during subsequent combustion. Overall, EMI inhibits the release of sulfur during the combined drying–incineration process of DS.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2021
·Vol. 8
·期 7
·2001947
·
IF 6.147
Wei Chen,Chaoxing Wu,Tailiang Guo,Hailong Hu,Fushan Li
Metals used in the electronics, machinery manufacturing, and construction industry are often chemically reactive and corrosion-prone, while barriers on a metal as a conventional method for anticorrosion always have negative effects including a toxic nature, thickness increase over time, and changes of electrical and optical properties after surface coating. This study employs a benzene solution to induce a rapid formation of a polycrystalline graphene film on copper foils or iron sheet substrates under atmospheric conditions by electromagnetic induction, which is non-toxic and environment-friendly and produces favorable anticorrosive effects. The microscopic analysis shows that the as-grown film is a polycrystalline graphene complex of graphene crystallites. It is revealed that the copper foils or iron sheets with the graphene film is significantly resistant to strong corrosion, with the corrosion current density is one order of magnitude lower when compared with samples without the graphene films. The polycrystalline structure of the graphene film can prevent the electronic conduction of the surface, thereby reducing corrosion and local over-corrosion phenomena when metals are situated in a long-term exposure to corrosive environments.
研究领域:
材料科学
·
化学工程
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Potao Sun,Chaolu Niu,Wenxia Sima,Tao Yuan,Ming Yang,Mingke Zhao,Zheng Fang,QiChang Liu,Qin Deng
Polymer insulation materials are subjected to a combination of electromagnetic fields, mechanical stresses, long-term light exposure, ambient temperature and other operating conditions that produce mechanical and electrical tree damage which lead to insulation failure. Self-healing technology is a fundamental solution to this problem. However, effective long-term self-healing of mechanical and electrical tree damage to insulating materials is extremely challenging. To address this issue, this work reports a magnetic field dual responsive blueberry-like microsphere (MFDR-BLMS) that makes a breakthrough in the long-term self-healing of mechanical and electrical damage. The microspheres are attracted to the vulnerable area of the insulating material by the directional magnetic field. When the damage come into contact with the microspheres, the high thermal conductivity microspheres as a whole rapidly melt and fill the damage channels under the action of electromagnetic induction heating. This method achieves a magnetically dual-action, non-contact, long-term effective self-healing of mechanical and electrical tree damage after photothermal aging of insulation materials. This is expected to eliminate the requirement for human contact during the repair process under live conditions and provides a new technological idea for the industrial application of self-healing materials for electrical insulation.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
Biosensors-Basel
·
2024
·Vol. 14
·期 5
·240
·
IF 4.9
Dongpeng Luo,Limin Xu,Lifeng Jia,Lianglun Cheng,Ping Tang,Jinyun Zhou
Cashmere and wool are both natural animal fibers used in the textile industry, but cashmere is of superior quality, is rarer, and more precious. It is therefore important to distinguish the two fibers accurately and effectively. However, challenges due to their similar appearance, morphology, and physical and chemical properties remain. Herein, a terahertz electromagnetic inductive transparency (EIT) metasurface biosensor is introduced for qualitative and quantitative identification of cashmere and wool. The periodic unit structure of the metasurface consists of four rotationally symmetric resonators and two cross−arranged metal secants to form toroidal dipoles and electric dipoles, respectively, so that its effective sensing area can be greatly improved by 1075% compared to the traditional dipole mode, and the sensitivity will be up to 342 GHz/RIU. The amplitude and frequency shift changes of the terahertz transmission spectra caused by the different refractive indices of cashmere/wool can achieve highly sensitive label−free qualitative and quantitative identification of both. The experimental results show that the terahertz metasurface biosensor can work at a concentration of 0.02 mg/mL. It provides a new way to achieve high sensitivity, precision, and trace detection of cashmere/wool, and would be a valuable application for the cashmere industry.
研究领域:
材料科学
·
纺织工程
·
传感技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Chen Donglin,Sha Juncheng,Mei Xudong,Ye An,Zhao Zhengping,Qiu Xunlin,Liu Xiaoyun,Niu Yueping,Zuo Peiyuan,Zhuang Qixin
As integrated circuits have developed towards the direction of complexity and miniaturization, there is an urgent need for low dielectric constant materials to effectively realize high-fidelity signal transmission. However, there remains a challenge to achieve ultralow dielectric constant and ultralow dielectric loss over a wide temperature range, not to mention having excellent thermal conductivity and processability concurrently. We herein prepare dual-linker freestanding covalent organic framework films with tailorable fluorine content via interfacial polymerization. The covalent organic framework possesses an ultralow dielectric constant (1.25 at 1 kHz, ≈1.2 at 6 G band), ultralow dielectric loss (0.0015 at 1 kHz) with a thermal conductivity of 0.48 Wm −1 K −1 . We show high-fidelity signal transmission based on the large-sized (>15 cm 2 ) COF films, far exceeding the most commercially available polyimide-based printed circuit board. In addition, the covalent organic framework also features excellent electret properties, which allows for active high-temperature electromechanical sensing. The electrode nanogenerator maintains 90% of the output voltage at 120 °C, outperforming the traditional fluorinated ethylene propylene electret. Collectively, this work paves the way for scalable application of ultralow dielectric constant covalent organic framework thin films in signal transmission and electromechanical sensing.
研究领域:
材料科学
·
电子工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Sensor Research
·
2024
·
IF 0
Yuanzhe Liang,Ziyi Dai,Sen Ding,Yuan Zhang,Yinning Zhou,Bingpu Zhou
Detection of liquid viscosity is important from chemical engineering to daily safety. To match the emergence of internet of things, precise and fast viscosity determination is attracting intention in the society. However, most miniature viscometers face limitations such as high operation frequency, moving component, and non-linear sensing, etc. Herein, a flexible viscometer is developed via coupling the electromagnetic induction with inherent oscillation of a magnetized oscillator. The mechanism allows vibration of the oscillator to be electrically reflected using damping signals. By analyzing the damping factor from viscosity-dependent voltage profiles, viscosity of an unknown liquid can be accurately obtained. Furthermore, the 3D structures is developed with a dual-template method, which enables convenient and high-throughput preparations of devices with complex 3D structures. Via optimizing the structural and physical parameters, the “sphere” oscillator enables a linear relationship between the damping factor and the square root of viscosity for quantitative sensing in range of 0.01809–24.7 mPa s. The principle of electromagnetic induction renders the viscometer with superiorities of low operating frequency, remote sensing, self-powered and chemical stability. It is expected that the methodology and damping dominant mechanism will serve as a promising platform for cost-effective, portable and convenient viscosity detection for applications in diverse fluids.
研究领域:
化学工程
·
传感器技术
·
材料科学
·
物理电子学
✓ 已验证
DOI
OPTICS COMMUNICATIONS
·
2024
·
IF 2.2
QianRu Ma,Yi Ma,ZeShuai Ren,Lin Chen
A terahertz plasmonic metasensor is demonstrated for simultaneous measurement of relative humidity (RH) and temperature at the first time. Double golden rings can excite electromagnetic induced transparency (EIT) with dual plasmonic resonances. By studying the relationship between resonance frequencies at both resonance dips and environmental parameters, the RH sensitivities are 0.14 GHz/% (−282 nm/%) at low frequency (dip A) and 0.27 GHz/% (−210 nm/%) at high frequency (dip C), while the temperature sensitivities are 1.35 GHz/°C (−2718 nm/°C) at dip A and 2.45 GHz/°C (−1906 nm/°C) at dip C. Additionally, the influences of temperature and RH are proven independent on frequency shifts, indicating a suitability with RH and temperature changes simultaneously. The proposed metasenor covers advantages of polarization-incident insensitivity, high sensitivity, easy integration and low cost, making wide applications in industrial manufacturing, clinical medicine, weather forecasting and human health.
研究领域:
传感器技术
·
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CHROMATOGRAPHIA
·
2014
·Vol. 78
·期 1
·119-123
·
IF 1.37
Yang Xiujuan,Liu Cui,Chen Zuanguang
A novel and rapid method was developed for the determination of uric acid in human urine by capillary electrophoresis with an improved electromagnetic induction detector. Electrophoretic parameters affecting the separation efficiency, such as buffer composition, buffer pH, buffer concentration, and electroosmotic flow modifier, were systematically investigated. An electrolyte solution consisting of 8.5 mmol L −1 tris(hydroxymethyl)aminomethane (Tris), 1.5 mmol L −1 citric acid, and 0.2 mmol L −1 cetyltrimethylammonium bromide, pH 8.0, was found to be suitable for sample determination. Uric acid was separated and detected within 2.3 min, with a linear response range from 5 to 400 µg mL −1 and a correlation coefficient of 0.9998. Intraday and interday precision were 1.6 and 2.5 % ( n = 6), respectively. The recoveries were between 98.3 and 100.5 %. This simple, effective, and stable method is a good alternative to existing methods for uric acid determination. Also, the improved electromagnetic induction detector holds great promise in clinical analysis.
研究领域:
分析化学
·
临床分析
·
电泳技术
✓ 已验证
DOI
高影响因子
CHROMATOGRAPHIA
·
2011
·Vol. 75
·期 1
·71-76
·
IF 1.075
Yang Xiujuan,Feng Jun,Chen Zuanguang,Liao Rifang,Li Xinchun
A novel, rapid and validated capillary electrophoretic method with an improved electromagnetic induction detector has been developed for the determination of ibuprofen, acetaminophen, amantadine hydrochloride, aminopyrine, diclofenac sodium and codeine phosphate in three kinds of analgesic pharmaceutical preparations. Fabrication of the electromagnetic inductor was the same as previously described, but a brand new electric circuit was designed for the detector to lower the background noise and improve the detection sensitivity. Important factors which might influence the response of the detector, including the value of the adjustable inductor and resistor, excitation frequency and voltage, were examined. Electrophoretic parameters affecting separation efficiency, such as variety of buffer, buffer pH, buffer concentration and electroosmotic flow modifier, were also deliberately investigated. Under the optimal conditions, highly linear response was obtained for these six compounds over three orders of magnitude with detection limits ranging from 0.1 to 1.0 μg mL −1 (S/N = 3). The average recovery and RSD were within the range of 97.5–101.5 and 1.1–2.3%, respectively. This simple, convenient, effective and stable method held great promise in quality control of pharmaceutical preparations.
研究领域:
分析化学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Zhuohuan Wu,Wei Liu,Jiayun Feng,Zhicheng Wen,Xinyue Zhang,Xinming Wang,Chunqing Wang,Yanhong Tian
Due to the harsh working environments up to 600 °C, the exploration of high-temperature interconnection materials is significantly important for high-power devices. In this study, a hybrid paste including Cu@Ag core–shell microparticles (MPs) and Ag nanoparticles (NPs) was designed to achieve Cu–Cu bonding. The Cu@Ag MPs exhibited excellent oxidation stability in an air atmosphere with the Ag layer coating on the Cu core. Ag NPs fill the pores among the Cu@Ag MPs and reduce the sintering temperature of the hybrid paste. The Cu–hybrid paste–Cu joints were formed via electromagnetic induction heating within approximately 15 s. When sintered at 26 kW, the shear strength of the joint reached 48 MPa, the porosity decreased to 0.73%, and the resistivity was down to 13.25 μΩ·cm. Furthermore, a possible interconnection mechanism at the contact interface between the Cu substrate and the sintered hybrid paste was proposed, which is related to the melting point of metal particles and the effect of magnetic eddy currents. This fast bonding technology inspires a new approach to interconnection for high-power devices under high operation temperatures.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Lu Peng,Jingyi Xu,Shen Yuan,Shengzhao Li,Shihao Deng,Hao Zhu,Lei Fu,Ting Zhang,Tie Li
Humans possess the remarkable ability to perceive the intricate world by integrating multiple senses. However, the challenge of enabling humanoid robots to achieve multimodal sensing and fine recognition of metallic materials persists. In this study, we propose a flexible tactile sensor that mimics the sensory patterns of human skin, which is assembled by a flexible electromagnetic coil that is engraved on the surface of a polyimide substrate and porous MXene/CNT aerogel. This sensor is capable of detecting pressure, temperature, and inductive signals with minimal interference via three disparate response mechanisms of the piezoresistive sensing, the thermoelectric principle, and the electromagnetic induction effect, allowing the device with the abilities of sensing grasp forces and selectively identifying ferromagnetic and nonferromagnetic metals, which has a high accuracy rate of 99.2% in distinguishing mixed metals with varying ratios based on the fusion algorithm of multimodal sensory data. Further, the sensor was integrated on a humanoid robotic hand to demonstrate its recognition capacity of objects used in a kitchen setting and a simulated scenario of mineral exploration, achieving a remarkable ultrafine accuracy of 100% in distinguishing 16 common metal products. These findings will pave the way for humanoid robots to attain heightened levels of perception and recognition.
研究领域:
机器人技术
·
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHROMATOGRAPHIA
·
2018
·Vol. 81
·期 7
·1043-1051
·
IF 1.401
Zhao Aixia,Xu Zhiqiang,Ma Liyi,Tian Zhenfeng,Gan Wuer
We report on the synthesis of Fe 3 O 4 @SiO 2 nanoparticles incorporated poly(divinylbenzene) monolithic column via in situ polymerization. The monolith had larger specific surface area and relatively uniform porous structure and was characterized by scanning electron microscopy, nitrogen adsorption–desorption, and Fourier transform infrared spectroscopy. The monolith was then applied for the evaluation of gas chromatography separation properties. Here, an electromagnetic induction heating technique was employed to control the column temperature with the thermal effect of eddy current in ferromagnetic materials Fe 3 O 4 . The monolith offered good separation efficiency for benzene and toluene and a higher column efficiency was obtained up to 4481 and 9216 plates per meter, respectively. In addition, the injection volume and column capacity of the proposed system are as much as 5 µL and 100 ng. This makes it possible to use a UV detector. The fabricated Fe 3 O 4 @SiO 2 nanoparticles incorporated poly(divinylbenzene) monolithic column has been shown to be very promising for gas chromatography separation. Graphical Abstract
研究领域:
分析化学
·
材料科学
✓ 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）