|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Analysis and Design of Four-Plate Capacitive Wireless Power Transfer System for Undersea Applications显示文摘This paper presents a four-plate undersea capacitive wireless power transfer(CPT)system for underwater applications such as autonomous underwater vehicles(AUVs).Generally,a CPT system transfers the power based on electric fields.The complex resonant compensation networks are used to make the CPT system work in the resonant condition.The resonant voltage is always very high.It will be a big challenge to the human safety.In this paper,a virtual electrons periodic reciprocating flow theory is proposed for the CPT system.In one switching cycle,the electrons firstly flow in the forward direction through the forward path and then flow in the inverse direction through the inverse path.The CPT system has been deeply studied with the vacuum dielectric or the air dielectric.However,for the CPT system,there are few papers to show the underwater application.In this paper,an undersea four-plate CPT system is designed and studied in the underwater condition.The two coupling capacitors and other elements of the CPT system could build a closed-loop path.A small value inductor is adapted as a resonant compensation network for the four-plate CPT system.The DC voltage is inverted to the AC voltage in the primary side with the single-phase full-bridge inverter.The resonant voltage is rectified to the DC voltage in the secondary side with the single-phase full-bridge diode rectifier.A 100 W power level CPT system is constructed to verify the theory analysis and the calculation.The theory analysis is verified by the simulated and experimental results.The stable output voltage and load power are achieved in this paper. | Lei Yang Yuanqi Zhang Xiaojie Li Jiale Jian Zhe Wang Jingjing Huang Li Ma Xiangqian Tong | 2021 | CES Transactions on Electrical Machines and Systems2021，5，3： | 9 |
| 2 | Experimental characteristics of a two-electrode plasma synthetic jet actuator array in serial显示文摘Plasma Synthetic Jet(PSJ) actuators have shown wide and promising application prospects in high-speed flow control, due to their advantages including high exhaust speed, wide frequency band, rapid response, and non-moving components. Although previous studies on PSJ actuators are abundant, most of them have focused on the performance of a single actuator. However, in practice, an actuator array is very necessary for large-scale aerodynamic actuation on account of the small affected area of a single PSJ. In this paper, the characteristics of a twoelectrode plasma synthetic jet actuator array in serial are investigated experimentally. Compared to a parallel actuator array, the serial actuator array requires simpler power supply design and is much easier to realize. High-speed photography of the discharge evolution, voltage-current measurement, and shadowgraphy visualization are used in the investigation. Experimental results show that, for the serial actuator array, weak discharges happen firstly between energized and suspending electrodes, and then a strong pulse arc discharge is triggered. The breakdown voltage in serial is irrelevant to such factors as the number of actuators, the maximum or minimum gap in serial,the connection sequence, etc. It is mainly determined by the sum of gaps. For serial actuators with the same anode-to-cathode spacing, the energy deposition is the same, and the jet is synchronous and similar. Because of the entrainment and merging of adjacent jet vortices, the jet front speed of an aligned synchronous jet array increases as the orifice distance decreases. To achieve the highest jet front velocity, the orifice of the actuator has an optimal diameter. | Yan ZHOU Zhixun XIA Zhenbing LUO Lin WANG Xiong DENG | 2018 | Chinese Journal of Aeronautics2018，31，12： | 9 |
| 3 | Potential of MXenes in Water Desalination: Current Status and Perspectives显示文摘MXenes,novel 2D transition metal carbides,have emerged as wonderful nanomaterials and a superlative contestant for a host of applications.The tremendous characteristics of MXenes,i.e.,high surface area,high metallic conductivity,ease of functionalization,biocompatibility,activated metallic hydroxide sites,and hydrophilicity,make them the best aspirant for applications in energy storage,catalysis,sensors,electronics,and environmental remediation.Due to their exceptional physicochemical properties and multifarious chemical compositions,MXenes have gained considerable attention for applications in water treatment and desalination in recent times.It is vital to understand the current status of MXene applications in desalination in order to define the roadmap for the development of MXene-based materials and endorse their practical applications in the future.This paper critically reviews the recent advancement in the synthesis of MXenes and MXene-based composites for applications in desalination.The desalination potential of MXenes is portrayed in detail with a focus on ion-sieving membranes,capacitive deionization,and solar desalination.The ion removal mechanism and regeneration ability of MXenes are also summarized to get insight into the process.The key challenges and issues associated with the synthesis and applications of MXenes and MXene-based composites in desalination are highlighted.Lastly,research directions are provided to guarantee the synthesis and applications of MXenes in a more effective way.This review may provide an insight into the applications of MXenes for water desalination in the future. | Ihsanullah Ihsanullah | 2020 | Nano-Micro Letters2020，12，6： | 6 |
| 4 | Capacitive charge storage enables an ultrahigh cathode capacity in aluminum-graphene battery显示文摘Aluminum^-graphene battery is promising for its abundant raw materials,high power density,ultralong cycle life and superior safety.However,the development of aluminum^-graphene battery is currently restricted by its insufficient cathode capacity,calling for a newly developed working mechanism.In addition,an irregular constant increase of the cathode capacity was always observed during cycling,but cannot be explained based on the current understanding.Here,we observed an increase of specific capacity by 60%with stable Coulombic efficiency of 98%during 7000 cycles life of Al-graphene batteries employing AlCl3/ET3NHCl electrolyte.We demonstrated this growing cathode capacity is attributed to an increasing contribution of capacitive charge storage during cycling,because a gradually enlarged surface area as capacitive active sites is enabled by the exfoliation of graphitic cathode during the periodic intercalation process.Moreover,the graphene cathode was exfoliated more significantly in AlCl3/ET3NHCl than 1-ethyl-3-methylimidazolium chloride-based electrolyte,which results from the heavier stress on the graphene layers caused by the larger intercalants in AlCl3/ET3NHCl.The common intercalation of cations with AlCl4-clusters was therefore supposed to occur during charging.This new proposed mechanism can offer the new thought for future design on high-capacity cathode of Al-ion battery. | Hanyan Xu Hao Chen Haiwen Lai Zheng Li Xiaozhong Dong Shengying Cai Xingyuan Chu Chao Gao | 2020 | Journal of Energy Chemistry2020，29，6： | 4 |
| 5 | 离子液体电解液在双电层电容器中的研究(英文)显示文摘双电层电容器(EDLCs)通过非法拉第过程在电极表面储存自由电荷,其通过电解质侧的双电层平衡,具有优异的循环稳定性和高功率密度.虽然EDLC被认为是有前景的能量储存器件,但其电极表面存储的电荷远低于电池,其较低的能量密度限制了其应用.离子液体(ILs),因其较宽的电化学窗口和独特的物理化学性能,可显著提高EDLCs的能量密度.本文综述了纯ILs、IL/IL二元混合体系、IL/有机溶剂混合体系以及功能化ILs等电解液,着重探讨了ILs的离子组成、尺寸、结构与电容的关系.咪唑类和季铵盐类ILs作为目前研究最广泛的两类ILs,前者一般具有较高的重量比电容,后者则表现出更宽的电化学窗口.故可对季铵盐类ILs进行官能化以提高其重量比电容,进而提高EDLCs的能量密度. | 尹莉 李姝 刘晓红 言天英 | 2019 | Science China Materials2019，62，11： | 4 |
| 6 | A capacitive sensor based on molecularly imprinted polymers and poly(p-aminobenzene sulfonic acid) film for detection of pazufloxacin mesilate显示文摘A novel capacitive sensor for pazufloxacin mesilate (pazufloxacin) determination was developed by electropolymerizing p-aminobenzene sulfonic (p-ABSA) and molecularly imprinted polymers (MIPs), which was synthesized through thermal radical copolymerization of metharylic acid (MAA) and ethyl-ene glycol dimethacrylate (EGDMA) in the presence of pazufloxacin template molecules, on the gold electrode surface. Furthermore, 1-dedecanethiol was used to insulate the modified electrode. Alter-nating current (ac) impedance experiments were carried out with a Model IM6e to obtain the capaci-tance responses. Under the optimum conditions, the sensor showed linear capacitance response to pazufloxacin in the range of 5 ng·mL-1 to 5 μg·mL-1 with a relative standard deviation (RSD) 5.3% (n=7) and a detection limit of 1.8 ng·mL-1. The recoveries for different concentration levels of pazufloxacin samples varied from 94.0% to 102.0%. Electrochemical experiments indicated the capacitive sensor exhibited good sensitivity and selectivity and showed excellent parameters of regeneration and stabil-ity. | ZHOU Lu YE GuangRong YUAN Ruo CHAI YaQin CHEN SuMing | 2007 | Science China Chemistry2007，50，4： | 4 |
| 7 | State-of-the-art and recent developments in micro/nanoscale pressure sensors for smart wearable devices and health monitoring systems显示文摘Small-sized,low-cost,and high-sensitivity sensors are required for pressure-sensing applications because of their critical role in consumer electronics,automotive applications,and industrial environments.Thus,micro/nanoscale pressure sensors based on micro/nanofabrication and micro/nanoelectromechanical system technologies have emerged as a promising class of pressure sensors on account of their remarkable miniaturization and performance.These sensors have recently been developed to feature multifunctionality and applicability to novel scenarios,such as smart wearable devices and health monitoring systems.In this review,we summarize the major sensing principles used in micro/nanoscale pressure sensors and discuss recent progress in the development of four major categories of these sensors,namely,novel material-based,flexible,implantable,and selfpowered pressure sensors. | Ye Chang Jingjing Zuo Hainan Zhang Xuexin Duan | 2020 | Nanotechnology and Precision Engineering2020，3，1： | 3 |
| 8 | Tunable seesaw-like 3D capacitive sensor for force and acceleration sensing显示文摘To address the resource-competing issue between high sensitivity and wide working range for a stand-alone sensor,development of capacitive sensors with an adjustable gap between two electrodes has been of growing interest.While several approaches have been developed to fabricate tunable capacitive sensors,it remains challenging to achieve,simultaneously,a broad range of tunable sensitivity and working range in a single device.In this work,a 3D capacitive sensor with a seesaw-like shape is designed and fabricated by the controlled compressive buckling assembly,which leverages the mechanically tunable configuration to achieve high-precision force sensing(resolution~5.22 nN)and unprecedented adjustment range(by~33 times)of sensitivity.The mechanical tests under different loading conditions demonstrate the stability and reliability of capacitive sensors.Incorporation of an asymmetric seesaw-like structure design in the capacitive sensor allows the acceleration measurement with a tunable sensitivity.These results suggest simple and low-cost routes to high-performance,tunable 3D capacitive sensors,with diverse potential applications in wearable electronics and biomedical devices. | Jilong Ye Fan Zhang Zhangming Shen Shunze Cao Tianqi Jin Xiaogang Guo Zhihong Li Li Lin Yihui Zhang | 2021 | npj Flexible Electronics2021，5，1： | 2 |
| 9 | PREPARATION OF CAPACITIVE-TYPE CO_2 GASSENSITIVE ELEMENT USING NANOMETER POWDERS显示文摘INTRODUCTIONRecently,agreatatentionhasbeenpaidtothedevelopmentandapplicationofenvironmentalgassensors[1-3].Theresearchesonso... | Liao, Bo Liu, Yexiang Wei, Qin Yang, Jianhong Li, Jie | 1998 | 中国有色金属学会会刊:英文版1998，8，4： | 2 |
| 10 | Numerical analysis of capacitive pressure micro-sensors显示文摘Pseudo-spectral method is used to numerically model the diaphragm deflection of capacitive pressure micro-sensor under uniform load. The relationship between the capacitance of the micro-sensor and the load is then analyzed after the description of the computational principle. For normal mode micro-sensor, the tensile force on the diaphragm can be ignored and thereby the capacitance increases linearly with the load increase only when the load is so small that the resultant deflection is less than the diaphragm thickness. The linear relationship between the capacitance and the load turns to be nonlinear thereafter and the capacitance rises dramatically with the constant increase of the load. For touch mode micro-sensor, an algorithm to determine the touch radius of the diaphragm and substrate is presented and the curve of capacitance versus load is shown on the numerical results laying a theoretical foundation for micro-sensor design. | WANG Xiaomin LI Mingxuan WANG Chenghao | 2005 | Science China(Technological Sciences)2005，48，2： | 2 |
| 11 | Capacitive humidity sensing properties of carbon nanotubes grown on silicon nanoporous pillar array显示文摘Multi-walled carbon nanotubes (CNTs) were grown on silicon nanoporous pillar array (Si-NPA) by thermal chemical vapor deposition method, and the structural and capacitive humidity sensing properties of CNT/Si-NPA were studied. It was found that with the relative humidity (RH) changing from 11% to 95%, a device re-sponse of ~480% was achieved at the frequency of 50000 Hz, and a linear device response curve could be obtained by adopting longitudinal logarithmic coordinate. The response/recovery times were measured to be ~20 s and ~10 s, respectively, which indicated a rather fast response/recovery rate. The adsorption-desorption dynamic cycle experiments demonstrated the high measurement reproducibility of CNT/Si-NPA sensors. These excellent performances were attributed to the unique surface structure, morphology and chemical inertness of CNT/Si-NPA. | JIANG WeiFen XIAO ShunHua ZHANG HuanYun DONG YongFen LI XinJian | 2007 | Science China(Technological Sciences)2007，50，4： | 1 |
| 12 | 氮氧共掺杂多孔碳片用于超高比容量的超级电容器(英文)显示文摘如何有效提升双层电容器的能量密度是一个亟待解决的重大课题,而提高其比容量是其中一种有效提高能量密度的常用方法.与常见的加入赝电容材料的方法不同,本论文通过在电解液中加入氧化还原介质的方法达到提升比容量的目的.在这一方法中,得到显著提高的比容量主要来源于氧化还原介质贡献的氧化还原行为.这一方法的优异之处在于氧化还原反应是发生在电解液中而非电极材料上,因此在一定程度上保证了电极材料的稳定性.在电极材料的设计上,通过简便的方法制备得到了氮氧共掺杂多孔碳片.在这一合成过程中,氧化石墨不仅可以提供氧实现杂原子掺杂,而且它的二维片状结构可以作为模板诱导碳片的形成.经制备的碳材料在氧化还原电解液体系中获得了优异的电化学性能,尤其表现在它超高的比容量(5073.5 Fg^(-1)).这一优异的电化学性能得益于碳片材料独特的形貌结构、表面特征以及它与电解液之间的相互作用.本文中使用氧化还原介质来提升比容量的方法为高性能双电层电容器的设计提供了新的方向. | 吴中 张新波 | 2016 | Science China Materials2016，59，7： | 1 |
| 13 | Development of fault section identification technique for low voltage DC distribution systems by using capacitive discharge current显示文摘The increasing importance of energy efficiency has led to several studies related to the construction of a reliable low voltage DC(LVDC) distribution system.Specifically, studies on a protection scheme that considers the fault characteristics of an LVDC distribution system are essential to improve system reliability. When compared to a conventional distribution system, the most distinct feature of an LVDC distribution system is the existence of a capacitive discharge current from converters under a fault condition that results in the prompt operation of protection devices. Therefore, this study involves proposing a precise and rapid technique to identify the fault section in an LVDC distribution system. The technique involves two stages, namely: an analysis stage to analyze the capacitive discharge current and a decision stage to identify the fault section based on the fault type. A detailed discussion of each step is presented and its feasibility is verified based on the results of simulations with an ElectroMagnetic Transients Program and MATLAB~?. | Chul-Ho NOH Chul-Hwan KIM Gi-Hyeon GWON Yun-Sik OH | 2018 | Journal of Modern Power Systems and Clean Energy2018，6，3： | 1 |
| 14 | A SERIES OF GENERAL FORMULAE FOR CAPACITIVE CHARACTER RANGING FROM LINEAR TO NONLINEAR CASES显示文摘Since the invention of Leyden jar in 1746, the definitional formula for capacitance had been used for calculating the capacitance of various capacitors all along. However, a general formula reflecting this capacitive character had not yet come into the notice of academic circles, though all the calculations indicate that the capacitance of any capacitor depends on | 陈燊年 | 1992 | Chinese Science Bulletin1992，37，6： | 1 |
| 15 | Influence upon specific absorption rate distribution at deep area by inserting an inner electrode during capacitive radio-frequency hyperthermia显示文摘In recent years, hyperthermia holds much attraction in the clinic practices, especially in the tumor treatment. In hyperthermia, the key to get much better therapeutic effects ts how to heat the tumor efficiently, that means how to keep the tumor in high temperature range (41—45℃), and avoid any damage of the surrounding normal tissues. Therefore, the first requirement for hyperthermic system is to produce an ideal heating field of which the main part can overcover the region for therapy. | 万柏坤 程晓曼 罗经国 林世寅 李丰彤 王伟 | 1996 | Chinese Science Bulletin1996，41，19： | 1 |
| 16 | Polyaniline nanostructures tuning with oxidants in interfacial polymerization system显示文摘Three kinds of nanostructured polyanilines(PANIs) were prepared through interfacial polymerization by using ammonium persulfate(APS) as a single oxidant,and APS/FeCl_3,APS/K_2Cr_2O_7 as composite oxidants,respectively.It is observed that faster formation process and higher yield of nanostructured PANIs could be achieved in the presence of FeCl_3 and K_2Cr_2O_7.The as-prepared PANIs were characterized by field emission scanning electron microscopy,ultraviolet-visible absorption spectroscopy,Fourier transform infrared and Raman spectroscopy,X-ray diffraction analysis and electrochemical measurements including cyclic voltammetry and galvanostatic charge/discharge measurement.The influence of composite oxidants on the morphology,microstructure,and electrical and electrochemical properties of PANIs was discussed.Interestingly,when APS/K_2Cr_2O_7 was used as the composite oxidants,PANI exhibited petal-like structure with high yield of 57.35%instead of general nanofibrous morphology formed in interfacial polymerization.Compared with those nanofibrous PANIs obtained by using APS as a single oxidant or APS/FeCl_3 as composite oxidants,petal-like PANIs exhibited the largest specific capacitance(692.4 F/g at scan rate of 5 mV/s) and highest cycle stability among them.It provides a new insight into the control of PANI nanostructures with high yield and energy storage ability by simply selecting suitable composite oxidants in interfacial polymerization. | Fanxin Zeng Zongyi Qin Banglei Liang Tao Li Na Liu Meifang Zhu | 2015 | Progress in Natural Science:Materials International2015，25，5： | 0 |
| 17 | Investigation of adsorption/desorption behavior of Cr(Ⅵ) at the presence of inorganic and organic substance in membrane capacitive deionization(MCDI)显示文摘The adsorption and desorption behavior of Cr(Ⅵ) in membrane capacitive deionization(MCDI) was investigated systematically in the presence of bovine serum albumin(BSA) and KCl with different concentrations, respectively. Results revealed that Cr(Ⅵ) absorption was enhanced and the adsorption amount for Cr(Ⅵ) increased from 155.7 to 190.8 mg/g when KCl concentration increased from 100 to 200 mg/L in the adsorption process, which was attributed to the stronger driving force. However, the adsorption amount sharply decreased to 90.2 mg/g when KCl concentration reached up to 1000 mg/L suggesting the negative effect for Cr(Ⅵ) removal that high KCl concentration had. As for the effect of BSA on ion adsorption, the amount for Cr(Ⅵ) significantly declined to 78.3 mg/g and p H was found to be an important factor contributing to this significant reduction. Then, the desorption performance was also conducted and it was obtained that the presence of KCl had negligible effect on Cr(Ⅵ) desorption, while promoted by the addition of BSA. The incomplete desorption was obtained and the residual chromium ions onto the electrode after desorption was detected via energy-dispersive X-ray spectroscopy(EDS). Based on above analysis, the enhanced removal mechanism for Cr(Ⅵ) in MCDI was found to be consisted of ion adsorption onto electrode surface, the redox reaction of Cr(Ⅵ) into Cr(III)and precipitation, which was demonstrated by X-ray photoelectron spectroscopy(XPS) and scanning electron microscope(SEM). | Lin Chen Chengyi Wang Shanshan Liu Liang Zhu | 2019 | Journal of Environmental Sciences2019，31，4： | 0 |
| 18 | Hierarchical Sb-Ni nanoarrays as robust binder-free anodes for high-performance sodium-ion half and full cells显示文摘A novel hierarchical electrode material for Na-ion batteries composed of Sbnanoplates on Ni nanorod arrays is developed to tackle the issues of the rapidcapacity fading and poor rate capability of Sb-based materials. The three-dimensional (3D) Sb-Ni nanoarrays as anodes exhibit the synergistic effects ofthe two-dimensional nanoplates and the open and conductive array structureas well as strong structural integrity. Further, their capacitive behavior isconfirmed through a kinetics analysis, which shows that their excellent Na-storageperformance is attributable to their unique nanostructure. When used asbinder-free sodium-ion battery (SIB) anodes, the nanoarrays exhibit a highcapacity retention rate (more than 80% over 200 cycles) at a current density of0.5 A.g-1 and excellent rate capacity (up to 20 A·g^-1), with their capacity being580 mAh-g-1. Moreover, a P2-Na2/3Nil/3Mn2/302//3D Sb-Ni nanoarrays full celldelivers a highly reversible capacity of 579.8 mAh.g-1 over 200 cycles and an energydensity as high as 100 Wh-kg^-1 This design strategy for ensuring fast and stableNa storage may work with other electrode materials as well. | Liying Liang Yang Xu Liaoyong Wen Yueliang Li Min Zhou Chengliang Wang Huaping Zhao Ute Kaiser Yong Lei | 2017 | Nano Research2017，10，9： | 0 |
| 19 | The fabrication and application of Ni-DNA nanowire-based nanoelectronic devices显示文摘DNA is a self-assembled,double stranded natural molecule that can chelate and align nickel ions between its base pairs.The fabrication of a DNA-guided nickel ion chain (Ni-DNA) device was successful,as indicated by the conducting currents exhibiting a Ni ion redox reaction-driven negative differential resistance effect,a property unique to mem-elements (1).The redox state of nickel ions in the Ni-DNA device is programmable by applying an external bias with different polarities and writing times (2).The multiple states of Ni-DNA-based memristive and memcapacitive systems were characterized (3).As such,the development of Ni-DNA nanowire device-based circuits in the near future is proposed. | Pang-Chia Chang Chia-Yu Chang Wen-Bin Jian Chiun-Jye Yuan Yu-Chang Chen Chia-Ching Chang | 2019 | Nano Research2019，12，6： | 0 |
| 20 | Computational study on influence of RF shielding box on inductance of coil显示文摘Despite the fact that a radio frequency (RF) shielding box affects a coil inductance used in matching network,RF engineers have used a coil inductance measured in open space on designing matching networks since it is difficult to precisely measure the coil inductance within the RF shielding box.In this work,we investigate the influences of the RF shielding box on the coil inductance via a 3D full electromagnetic wave simulation.Simulation results shows that the coil inductance decreases from-6.0% to-11.9% compared with its ideal inductance depending on coil positions within the RF shielding box.Both inductive and capacitive coupling between the coil and surfaces of the RF shielding box contribute to the reduction of the coil inductance.We expect that these results would be useful for those who design RF matching networks. | S J KIM J J LEE Y S LEE J H KIM S J YOU | 2019 | Plasma Science and Technology2019，21，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员