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学者姓名:陈花玲

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< Page ,Total 33 >
Rapid deformation of IPMC under a high electrical pulse stimulus inspired by action potential SCIE
期刊论文 | 2019 , 28 (1) | SMART MATERIALS AND STRUCTURES
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Abstract :

Slow deformation seriously restrains application development of IPMC actuator, especially for thick and ionic liquid-based IPMC. Inspired by the action potential of muscle cell, this letter proposes a concept of high electrical pulse stimulus to accelerate IPMC deformation. By analyzing the dynamic process of voltage drop at the electrode-polymer interface, high voltage pulse is proved theoretically to be safe for IPMC in a short time. After charging the electrical double layer at the interface, the voltage pulse should be reduced to a safe level before electrochemical reactions. In our experiments, applying various high voltage pulses to a thick IPMC, the deformation can be sped up a few hundred times at most without any electrolysis damage. The results strongly support the practicability of the impulsive driving method.

Keyword :

action potential rapid deformation electrical pulse stimulus ionic polymer-metal composites

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GB/T 7714 Zhu, Zicai , Bian, Changsheng , Ru, Jie et al. Rapid deformation of IPMC under a high electrical pulse stimulus inspired by action potential [J]. | SMART MATERIALS AND STRUCTURES , 2019 , 28 (1) .
MLA Zhu, Zicai et al. "Rapid deformation of IPMC under a high electrical pulse stimulus inspired by action potential" . | SMART MATERIALS AND STRUCTURES 28 . 1 (2019) .
APA Zhu, Zicai , Bian, Changsheng , Ru, Jie , Bai, Wanfa , Chen, Hualing . Rapid deformation of IPMC under a high electrical pulse stimulus inspired by action potential . | SMART MATERIALS AND STRUCTURES , 2019 , 28 (1) .
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3D printing fabrication of porous bismuth antimony telluride and study of the thermoelectric properties EI
期刊论文 | 2019 , 37 , 370-375 | Journal of Manufacturing Processes
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Abstract :

This paper reports the successful preparation of porous thermoelectric samples of bismuth antimony telluride (Bi0.5Sb1.5Te3, BST) using 3D printing technology. The porous thermoelectric samples were fabricated with selective laser sintering (SLS) method using 100 mesh BST powders. Their thermoelectric performances, including electrical conductivity, Seebeck coefficient, and thermal conductivity in the temperature range of 25℃ - 250℃ were measured. The electrical conductivity was found to have a maximum value 4.03 × 104 S/m, lower than maximum value 7.36 × 104 S/m of the bulk BST. The Seebeck coefficient of the porous samples was found have a maximum value at 190.51 μV/K, slightly higher than that of the BST bulk alloy. The minimum thermal conductivity of the porous BST samples was measured to be 0.27 W/mK at 54℃, less than 18% of minimum that for the bulk BST alloy. The thermal conductivity is reduced due to boundaries and defects formed in SLS process as well as the porous structures of the samples. The figure of merit (ZT) of the porous samples was found to have a maximum value of about 1.29, higher than that of the BST bulk material. © 2018 The Society of Manufacturing Engineers

Keyword :

3-D printing Bismuth antimony telluride Porous thermoelectric Selective laser sintering Thermoelectric

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GB/T 7714 Shi, Jianxu , Chen, Hualing , Jia, Shuhai et al. 3D printing fabrication of porous bismuth antimony telluride and study of the thermoelectric properties [J]. | Journal of Manufacturing Processes , 2019 , 37 : 370-375 .
MLA Shi, Jianxu et al. "3D printing fabrication of porous bismuth antimony telluride and study of the thermoelectric properties" . | Journal of Manufacturing Processes 37 (2019) : 370-375 .
APA Shi, Jianxu , Chen, Hualing , Jia, Shuhai , Wang, Wanjun . 3D printing fabrication of porous bismuth antimony telluride and study of the thermoelectric properties . | Journal of Manufacturing Processes , 2019 , 37 , 370-375 .
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A three-electrode structured ionic polymer carbon-composite actuator with improved electromechanical performance EI SCIE Scopus
期刊论文 | 2018 , 27 (8) | SMART MATERIALS AND STRUCTURES
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Abstract :

Ionic polymer carbon-composite (IPCC) is a kind of ionic electroactive polymer with a Nafion/ ionic liquid electrolyte layer between two multi-walled carbon nanotube (MWCNT) film electrodes. We have fabricated a three-electrode structured IPCC (3E-IPCC) that exhibited a higher safe working voltage and improved electromechanical performance when compared with a traditional two-electrode laminar actuator. An intermediate electrode that was fabricated using MWCNTs was introduced into the matrix membrane, which was then subjected to hot-pressing to form the 3E-IPCC actuator. The effects of the intermediate electrode on the performance of the 3E-IPCC were analyzed. The experiment results indicated that the intermediate electrode connected the two electrolyte layers in series and successfully broadened the window of working voltage by distributing the voltage over the two electrolyte layers. The broadened window of working voltage endowed a higher safe working voltage and then led to enhanced electromechanical performance when compared with the traditional IPCC actuator. The 3E-IPCC exhibited desirable properties, including a large deformation, high output force and excellent stability under high working voltages and so these actuators show great potential for use in a wide range of fields.

Keyword :

smart material three-electrode structure high working voltage enhanced electroactive performance iEAP

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GB/T 7714 Bian, Changsheng , Ru, Jie , Zhu, Zicai et al. A three-electrode structured ionic polymer carbon-composite actuator with improved electromechanical performance [J]. | SMART MATERIALS AND STRUCTURES , 2018 , 27 (8) .
MLA Bian, Changsheng et al. "A three-electrode structured ionic polymer carbon-composite actuator with improved electromechanical performance" . | SMART MATERIALS AND STRUCTURES 27 . 8 (2018) .
APA Bian, Changsheng , Ru, Jie , Zhu, Zicai , Luo, Bin , Chen, Hualing . A three-electrode structured ionic polymer carbon-composite actuator with improved electromechanical performance . | SMART MATERIALS AND STRUCTURES , 2018 , 27 (8) .
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Effect of crosslinks, entanglements, and chain extensibilities on dynamic electromechanical instability of dielectric elastomers SCIE
期刊论文 | 2018 , 124 (3) | EPL
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Dynamic electromechanical instability (EMI) can affect the actuation performance of dielectric elastomers (DEs). This letter develops a theoretical framework to investigate the dynamic EMI of DEs with diverse crosslinks, entanglements, and chain extensibilities under a step voltage and equal biaxial pre-stresses. Based on the work-energy principle combining the EMI condition, the dynamic instability parameters at transition state between the stable and instable states are determined. At the small pre-stress, weak crosslinks or strong entanglements contribute to achieving a high actuation stretch ratio. When the pre-stress further increases, the DE with strong entanglements is prone to the dynamic EMI, and the variation in the dynamic instability actuation stretch ratio with the level of crosslinks is non-monotonic, which forms a peak. Moreover, as the level of chain extensibilities reduces, the dynamic instability actuation stretch ratio increases, and the enhancement effect can be significant at the large pre-stress. These results can help optimize the dynamic DE to obtain a stable oscillation without the dynamic EMI or utilize dynamic EMI to achieve a dramatic deformation. Copyright (C) EPLA, 2018

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GB/T 7714 Fan, Peng , Chen, Hualing . Effect of crosslinks, entanglements, and chain extensibilities on dynamic electromechanical instability of dielectric elastomers [J]. | EPL , 2018 , 124 (3) .
MLA Fan, Peng et al. "Effect of crosslinks, entanglements, and chain extensibilities on dynamic electromechanical instability of dielectric elastomers" . | EPL 124 . 3 (2018) .
APA Fan, Peng , Chen, Hualing . Effect of crosslinks, entanglements, and chain extensibilities on dynamic electromechanical instability of dielectric elastomers . | EPL , 2018 , 124 (3) .
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Elastomeric electrode and casting process for manufacturing multilayer dielectric elastomer actuators EI CPCI-S Scopus
会议论文 | 2018 , 10594 | SPIE 20th Conference on Electroactive Polymers Actuators and Devices (EAPAD)
SCOPUS Cited Count: 1
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Abstract :

In this paper, we present the preparation of a novel elastomeric electrode and characterize its properties. Meanwhile, a casting process is developed to manufacture multilayer dielectric elastomer actuator, which based on silicone material and elastomeric electrode. This process casts every layer by a casting coater, and the formed thickness was adjustable. Besides, the casting process makes it possible to make complex electrode geometries in the millimeter scale. At last, the experiment results demonstrate that the multilayer DEA manufactured by this process enjoys the advantage of homogenous and reproducible properties as well as no perfounance degradation after one-year use.

Keyword :

multilayer actuator silicone dielectric elastomer elastomeric electrode casting process

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GB/T 7714 Li, Zhuoyuan , Dong, Pengfei , Shi, Tianlin et al. Elastomeric electrode and casting process for manufacturing multilayer dielectric elastomer actuators [C] . 2018 .
MLA Li, Zhuoyuan et al. "Elastomeric electrode and casting process for manufacturing multilayer dielectric elastomer actuators" . (2018) .
APA Li, Zhuoyuan , Dong, Pengfei , Shi, Tianlin , Tang, Chao , Bian, Changsheng , Chen, Hualing . Elastomeric electrode and casting process for manufacturing multilayer dielectric elastomer actuators . (2018) .
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Optimizing the energy harvesting cycle of a dissipative dielectric elastomer generator for performance improvement EI
期刊论文 | 2018 , 10 (12) | Polymers
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Abstract :

This paper optimizes the energy harvesting cycle of dissipative dielectric elastomer generators (DEGs) to explore possible approaches for improving the energy harvesting performance. By utilizing the developed theoretical framework, the dissipative performance of the DEG with a constant voltage cycle is analyzed, which shows good agreement with the existing experimental data. On this basis, we design a novel energy harvesting cycle and a corresponding energy harvesting circuit in which a transfer capacitor is utilized to store the charge transferred from the DEG. Then, the energy conversion performance of the DEG with the novel energy harvesting cycle is investigated. The results indicate that both the energy density and conversion efficiency are improved by choosing a high voltage during the discharging process and that as the R-C time constant increases, the enhancement effect of the voltage increases and then approaches to the saturation. In addition, there is an optimal transfer capacitor that can maximize energy density or conversion efficiency, and the optimal transfer capacitor increases with the increase in the R-C time constant. These results and methods are expected to guide the optimal design and assessment of DEGs. © 2018 by the authors.

Keyword :

Dielectric elastomers Discharging process Electro-active polymers Enhancement effects Optimal transfers Performance improvements Theoretical framework Transfer capacitor

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GB/T 7714 Fan, Peng , Chen, Hualing . Optimizing the energy harvesting cycle of a dissipative dielectric elastomer generator for performance improvement [J]. | Polymers , 2018 , 10 (12) .
MLA Fan, Peng et al. "Optimizing the energy harvesting cycle of a dissipative dielectric elastomer generator for performance improvement" . | Polymers 10 . 12 (2018) .
APA Fan, Peng , Chen, Hualing . Optimizing the energy harvesting cycle of a dissipative dielectric elastomer generator for performance improvement . | Polymers , 2018 , 10 (12) .
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Stacked dielectric elastomer actuator (SDEA): casting process, modeling and active vibration isolation EI SCIE Scopus
期刊论文 | 2018 , 27 (7) | SMART MATERIALS AND STRUCTURES
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Abstract :

In this paper, a novel fabrication process of stacked dielectric elastomer actuator (SDEA) is developed based on casting process and elastomeric electrode. The so-fabricated SDEA benefits the advantages of homogenous and reproducible properties as well as little performance degradation after one-year use. A coupling model of SDEA is established by taking into consideration of the elastomeric electrode and the calculated results agree with the experiments. Based on the model, we attain the method to optimize the SDEA's parameters. Finally, the SDEA is used as an isolator in active vibration isolation system to verify the feasibility in dynamic application. And the experiment results show a great prospect for SDEA in such application.

Keyword :

active vibration isolation stacked dielectric elastomer actuator casting process

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GB/T 7714 Li, Zhuoyuan , Sheng, Meiping , Wang, Minqing et al. Stacked dielectric elastomer actuator (SDEA): casting process, modeling and active vibration isolation [J]. | SMART MATERIALS AND STRUCTURES , 2018 , 27 (7) .
MLA Li, Zhuoyuan et al. "Stacked dielectric elastomer actuator (SDEA): casting process, modeling and active vibration isolation" . | SMART MATERIALS AND STRUCTURES 27 . 7 (2018) .
APA Li, Zhuoyuan , Sheng, Meiping , Wang, Minqing , Dong, Pengfei , Li, Bo , Chen, Hualing . Stacked dielectric elastomer actuator (SDEA): casting process, modeling and active vibration isolation . | SMART MATERIALS AND STRUCTURES , 2018 , 27 (7) .
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Energy harvesting from a DE-based soft pendulum EI Scopus SCIE
期刊论文 | 2018 , 27 (11) | Smart Materials and Structures
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© 2018 IOP Publishing Ltd. This paper proposes a DE-based soft pendulum that is capable of converting the vibrational energy into electrical energy. A theoretical analysis model is developed to investigate the energy harvesting performance of the DE-based soft pendulum with diverse dimensional, electrical and dynamic parameters, which shows a good agreement with the experiment results. The research results show that there is an optimal resistance to maximize the average power density, and the optimal resistance can decrease with the increase in the initial voltage of the DE. When the natural frequency of the designed pendulum is equal to the excitation frequency, the maximum average power density can be achieved. In addition, the maximum average power density can be improved by enlarging the mass of the pendulum and the initial voltage of the DE, and reducing the initial length of the DE. The proposed model can serve as guidance for optimizing the energy harvesting system in future studies.

Keyword :

dielectric elastomer dielectric elastomer generator energy harvesting soft pendulum

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GB/T 7714 Fan, Peng , Zhu, Liangquan , Chen, Hualing et al. Energy harvesting from a DE-based soft pendulum [J]. | Smart Materials and Structures , 2018 , 27 (11) .
MLA Fan, Peng et al. "Energy harvesting from a DE-based soft pendulum" . | Smart Materials and Structures 27 . 11 (2018) .
APA Fan, Peng , Zhu, Liangquan , Chen, Hualing , Luo, Bin . Energy harvesting from a DE-based soft pendulum . | Smart Materials and Structures , 2018 , 27 (11) .
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Performance investigation of a dissipative dielectric elastomer generator by the damping model EI SCIE Scopus
期刊论文 | 2018 , 124 (2) | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
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Abstract :

This paper proposes an analytical model to investigate the performance of a dissipative dielectric elastomer generator (DEG) by considering the damping effect and the leakage current. Based on the analytical model, we study the effect of the cycle period, the maximum stretch ratio, and the pre-stretch ratio on the performance parameters of DEGs: the energy density, the average power density, and the conversion efficiency. The simulation results show that increasing the cycle period contributes to improving the energy density and the conversion efficiency. Moreover, the energy density and the average power density increase with the increase in the maximum stretch ratio. In addition, as the pre-stretch ratio increases, the energy density and the average power density can decrease. These methods and conclusions can better guide the optimal design and assessment of DEGs.

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GB/T 7714 Fan, Peng , Chen, Hualing . Performance investigation of a dissipative dielectric elastomer generator by the damping model [J]. | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2018 , 124 (2) .
MLA Fan, Peng et al. "Performance investigation of a dissipative dielectric elastomer generator by the damping model" . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 124 . 2 (2018) .
APA Fan, Peng , Chen, Hualing . Performance investigation of a dissipative dielectric elastomer generator by the damping model . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2018 , 124 (2) .
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Research on 3D Printing Process of Ionic Gel EI
期刊论文 | 2018 , 54 (17) , 157-164 | Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
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3D printing technique is applied to electro-active polymer material- ionic gel. Solution configuration method is employed in hot pressing process for preparing ionic gel. The characteristic size distribution of the ionic gel core layer and electrode layer after the single line and line assembly experiments are studied under combinations of parameters such as flow rate and scanning speed. The experimental results show that the extrusion flow rate and the scanning speed influence the width of the fiber width, and then influence the single layer quality of fiber spelled surface. On the basis of the optimum process parameters and layer thickness, an ionic cylindrical ring structure with thickness of 0.5 mm is printed by multi-layers. The force of about 500 mN is applied to the measurement point of the structure, and the voltage response of 0.35 mV can generate on the upper and lower surface of the structure. The sandwich structure of ionic gels is made by composite printing technology. The printed ionic gel specimens are driven by DC voltage of 3.5 V, and 1.5 mm deformation could generate within 18 s at the end of the specimen. The sensing and driving performance test results prove that the 3D printing process of ionic gels is feasible, which lays a foundation for subsequent complex manufacturing of materials and applications in soft robots. © 2018 Journal of Mechanical Engineering.

Keyword :

Characteristic size Complex manufacturing Driving properties Electro-active polymers Hot-pressing process Printing technologies Scanning speed Sensing performance

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GB/T 7714 Luo, Bin , Xia, Huachi , Chen, Hualing et al. Research on 3D Printing Process of Ionic Gel [J]. | Jixie Gongcheng Xuebao/Journal of Mechanical Engineering , 2018 , 54 (17) : 157-164 .
MLA Luo, Bin et al. "Research on 3D Printing Process of Ionic Gel" . | Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 54 . 17 (2018) : 157-164 .
APA Luo, Bin , Xia, Huachi , Chen, Hualing , Zhu, Zicai , He, Ximing , Li, Dicheng . Research on 3D Printing Process of Ionic Gel . | Jixie Gongcheng Xuebao/Journal of Mechanical Engineering , 2018 , 54 (17) , 157-164 .
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