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学者姓名:陈花玲

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< Page ,Total 36 >
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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Ionic polymer pressure sensor with gradient shape based on ion migration SCIE
期刊论文 | 2019 , 125 (2) | JOURNAL OF APPLIED PHYSICS
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Abstract :

Inspired by the sensing mechanism of an ionic polymer-metal composite (IPMC) strip, in which an electrical response is induced by an elastic stress gradient across the strip's thickness, we propose a new ionic polymer pressure sensor with a gradient shape that is based on ion migration. Under an applied pressure, an elastic stress gradient is generated across the top and bottom surfaces of the gradient, which then causes cations to migrate toward the lower pressure side. This cation redistribution then generates an electrical response. To verify this concept, a millimeter-scale ionic pressure sensor based on Nafion was fabricated by a casting method. The voltage responses of this sensor were measured using a self-made test setup. The maximum response approached tens of millivolts, which was much greater than that of an IPMC bending sensor. The sensing voltage was also investigated with respect to the various area ratios between the top and bottom surfaces and the various sensor heights. The sensitivity initially increases with increasing area ratio and then tends to reach a saturation state, whereas it rarely changed with variations in the height. Finally, the mechanical analysis showed that the size effects on the sensitivity could be explained qualitatively by the stress difference that occurs between the top and bottom surfaces. Published under license by AIP Publishing.

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GB/T 7714 Zhu, Zicai , He, Ximing , He, Qingsong et al. Ionic polymer pressure sensor with gradient shape based on ion migration [J]. | JOURNAL OF APPLIED PHYSICS , 2019 , 125 (2) .
MLA Zhu, Zicai et al. "Ionic polymer pressure sensor with gradient shape based on ion migration" . | JOURNAL OF APPLIED PHYSICS 125 . 2 (2019) .
APA Zhu, Zicai , He, Ximing , He, Qingsong , Fang, Xiaoyong , Hu, Qiao , Chen, Hualing . Ionic polymer pressure sensor with gradient shape based on ion migration . | JOURNAL OF APPLIED PHYSICS , 2019 , 125 (2) .
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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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Moisture and electric coupling stimulated ionic polymer actuator with superior deformation behavior EI CPCI-S Scopus
会议论文 | 2018 , 10594 | SPIE 20th Conference on Electroactive Polymers Actuators and Devices (EAPAD)
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Abstract :

To date, water-based ionic polymer metal composite (IPMC) is just regarded as a kind of electroactive material, whereas humidity is traditionally regarded as a disadvantageous factor, the change of which negatively influences the performance of the IPMC. However, the deformation of the IPMC is greatly sensitive to ambient humidity, and can be enhanced dramatically by changing the humidity. In this study, a novel actuation mode is proposed to control the deformation behavior of IPMC by employing moisture as an independent or collaborative incentive source together with the electric field. The deformation is continuously recorded under electric field and electric field-moisture coupling stimulus. These results are consistent with the view that the bending properties of the IPMC are a result of the balance of osmotic pressure and electrostatic stress in the membrane, which is greatly dependent on the change of humidity. Therefore, development of the coupling-drive mode is of great significance for the guidance of material design and application for the IPMC.

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GB/T 7714 Ru, Jie , Zhu, Zicai , Wang, Yanjie et al. Moisture and electric coupling stimulated ionic polymer actuator with superior deformation behavior [C] . 2018 .
MLA Ru, Jie et al. "Moisture and electric coupling stimulated ionic polymer actuator with superior deformation behavior" . (2018) .
APA Ru, Jie , Zhu, Zicai , Wang, Yanjie , Chen, Hualing . Moisture and electric coupling stimulated ionic polymer actuator with superior deformation behavior . (2018) .
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Additive Manufacturing Based on Light Driven Soft Structure EI Scopus CSCD PKU
期刊论文 | 2018 , 52 (8) , 54-59 | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
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Abstract :

For the disadvantages of light-driven materials used in soft robots, such as simple structure, complex forming process, and poor performance stability, we apply the additive manufacturing technology to the manufacture of light-driven materials and structures, and develop a method for the additive manufacturing process of polydimethylsiloxane (PDMS) and carbon nanotube (CNT) double-layer composites. The process testing shows that when the injection pump flow is 0.05 mL/min, the head moving speed is 30 mm/s and the print head diameter is 0.3 mm, the printed PDMS plane has the better flatness; when the injection pump flow is 0.4 mL/min, the nozzle moving speed is 33 mm/s and the diameter of the head is 0.4 mm, the printed CNT single-track forming track is more continuous and uniform, and the printed plane is flat; and as the printed PDMS layer thickness or the CNT layer thickness increase, the response speed of the optical drive in the two-layer structure gradually lowers. Via the additive manufacturing technology, a soft robot hand is printed. It can simulate pinching, grasping, and gripping of human hands under light, demonstrating the feasibility of the additive manufacturing process for light-driven materials. © 2018, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.

Keyword :

Additive manufacturing process Additive manufacturing technology Light driven Polydimethylsiloxane PDMS Printing process Simple structures Soft robot Two-layer structures

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GB/T 7714 Xu, Xuejie , Luo, Bin , Chen, Hualing . Additive Manufacturing Based on Light Driven Soft Structure [J]. | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2018 , 52 (8) : 54-59 .
MLA Xu, Xuejie et al. "Additive Manufacturing Based on Light Driven Soft Structure" . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 52 . 8 (2018) : 54-59 .
APA Xu, Xuejie , Luo, Bin , Chen, Hualing . Additive Manufacturing Based on Light Driven Soft Structure . | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University , 2018 , 52 (8) , 54-59 .
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U-turning an agile robotic cube by a soft dielectric elastomer resonator EI Scopus
会议论文 | 2018 , 333-338 | 1st IEEE International Conference on Soft Robotics, RoboSoft 2018
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Small robot is favorable in diverse application. Dielectric elastomer is soft active material, offering new insight in robotic actuation. This paper describes a lightweight robotic cube driven by a dielectric elastomer resonator (DER). The vibration performance of the DER is experimentally studied and characterized for a fast speed actuation in robotic cube. This robotic cube has an excellent athletic ability. Firstly, without wheel, leg or track, it can locomote rectilinearly at the first mode resonance frequency of DER, with the speed of 0.78 body length per second. Secondly, the robotic cube can change its direction (U-turn) at the second mode resonance frequency of DER. The robotic cube favors simplicity in manufacture and multi-mode locomotion integration controlled by a single actuator at its voltage change. © 2018 IEEE.

Keyword :

Active material Agile robotics Athletic abilities Dielectric elastomers Diverse applications Light-weight robotics Resonance frequencies Single actuators

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GB/T 7714 Tang, Chao , Li, Bo , Chen, Hualing . U-turning an agile robotic cube by a soft dielectric elastomer resonator [C] . 2018 : 333-338 .
MLA Tang, Chao et al. "U-turning an agile robotic cube by a soft dielectric elastomer resonator" . (2018) : 333-338 .
APA Tang, Chao , Li, Bo , Chen, Hualing . U-turning an agile robotic cube by a soft dielectric elastomer resonator . (2018) : 333-338 .
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Research Progress in Tunable Surface Morphology in Soft Materials and Applications EI Scopus CSCD PKU
期刊论文 | 2018 , 46 (3) , 131-141 | Cailiao Gongcheng/Journal of Materials Engineering
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Abstract :

The special functions of surface morphology in nature have attracted many scholars' interest, and the control of soft-rigid composites has become a hotspot in recent years. The common soft material surface morphological formation methods, including pre-stretched method, heat treating method and swelling method, were introduced in this paper and a way for the generation of surface morphology was provided. The application of surface morphology in engineering including fluid dynamics, optics, and other fields were introduced, and some ideas for reference in wide engineering application were provided. On the basis of this, the development trend of the active control and generation method of the surface morphology was prospected. © 2018, Journal of Materials Engineering. All right reserved.

Keyword :

Development trends Engineering applications Formation method Generation method Heat treating methods Rigid composites Soft material Special functions

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GB/T 7714 Tang, Chao , Chen, Hua-Ling , Li, Bo et al. Research Progress in Tunable Surface Morphology in Soft Materials and Applications [J]. | Cailiao Gongcheng/Journal of Materials Engineering , 2018 , 46 (3) : 131-141 .
MLA Tang, Chao et al. "Research Progress in Tunable Surface Morphology in Soft Materials and Applications" . | Cailiao Gongcheng/Journal of Materials Engineering 46 . 3 (2018) : 131-141 .
APA Tang, Chao , Chen, Hua-Ling , Li, Bo , Liu, Xue-Jing . Research Progress in Tunable Surface Morphology in Soft Materials and Applications . | Cailiao Gongcheng/Journal of Materials Engineering , 2018 , 46 (3) , 131-141 .
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Pinnacle elimination and stability analyses in nonlinear oscillation of soft dielectric elastomer slide actuators EI Scopus SCIE
期刊论文 | 2018 , 94 (3) , 1907-1920 | Nonlinear Dynamics
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Abstract :

Dielectric elastomers (DEs) exhibit significant potential applications as soft robots. Due to complicated electromechanical coupling behavior, DEs generate a strong nonlinear oscillation, which may induce the undesired failure and other instabilities. Based on the DE slide actuators (DESAs), we deduce a viscoelastic dynamic model by incorporating the inertial forces and viscous dampings in all three principal directions. Numerically, calculations are utilized to detect the dynamic properties of the DESA. By employing the established model, the special phenomenon of pinnacle elimination in nonlinear oscillation is achieved. The dynamic loss of tension instability in both two DE membranes of the DESA is also analyzed. Effects of the voltage amplitude, the mass bar, the length ratio between two membranes, and the prestretches of DEs are considered and discussed, respectively. © 2018, Springer Nature B.V.

Keyword :

Dielectric elastomers Dynamic property Inertial forces Nonlinear oscillation Pinnacle elimination Principal directions Stability analysis Voltage amplitude

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GB/T 7714 Zhang, Junshi , Chen, Hualing , Li, Dichen . Pinnacle elimination and stability analyses in nonlinear oscillation of soft dielectric elastomer slide actuators [J]. | Nonlinear Dynamics , 2018 , 94 (3) : 1907-1920 .
MLA Zhang, Junshi et al. "Pinnacle elimination and stability analyses in nonlinear oscillation of soft dielectric elastomer slide actuators" . | Nonlinear Dynamics 94 . 3 (2018) : 1907-1920 .
APA Zhang, Junshi , Chen, Hualing , Li, Dichen . Pinnacle elimination and stability analyses in nonlinear oscillation of soft dielectric elastomer slide actuators . | Nonlinear Dynamics , 2018 , 94 (3) , 1907-1920 .
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Active Tube-Shaped Actuator with Embedded Square Rod-Shaped Ionic Polymer-Metal Composites for Robotic-Assisted Manipulation EI SCIE PubMed Scopus
期刊论文 | 2018 | APPLIED BIONICS AND BIOMECHANICS
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This paper reports a new technique involving the design, fabrication, and characterization of an ionic polymer-metal composite( IPMC-) embedded active tube, which can achieve multidegree-of-freedom (MODF) bending motions desirable in many applications, such as a manipulator and an active catheter. However, traditional strip-type IPMC actuators are limited in only being able to generate 1-dimensional bending motion. So, in this paper, we try to develop an approach which involves molding or integrating rod-shaped IPMC actuators into a soft silicone rubber structure to create an active tube. We modified the Nafion solution casting method and developed a complete sequence of a fabrication process for rod-shaped IPMCs with square cross sections and four insulated electrodes on the surface. The silicone gel was cured at a suitable temperature to form a flexible tube using molds fabricated by 3D printing technology. By applying differential voltages to the four electrodes of each IPMC rod-shaped actuator, MDOF bending motions of the active tube can be generated. Experimental results show that such IPMC-embedded tube designs can be used for developing robotic-assisted manipulation.

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GB/T 7714 Wang, Yanjie , Liu, Jiayu , Zhu, Denglin et al. Active Tube-Shaped Actuator with Embedded Square Rod-Shaped Ionic Polymer-Metal Composites for Robotic-Assisted Manipulation [J]. | APPLIED BIONICS AND BIOMECHANICS , 2018 .
MLA Wang, Yanjie et al. "Active Tube-Shaped Actuator with Embedded Square Rod-Shaped Ionic Polymer-Metal Composites for Robotic-Assisted Manipulation" . | APPLIED BIONICS AND BIOMECHANICS (2018) .
APA Wang, Yanjie , Liu, Jiayu , Zhu, Denglin , Chen, Hualing . Active Tube-Shaped Actuator with Embedded Square Rod-Shaped Ionic Polymer-Metal Composites for Robotic-Assisted Manipulation . | APPLIED BIONICS AND BIOMECHANICS , 2018 .
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Capacitive energy harvesting using soft dielectric elastomers: Design, testing and impedance matching optimization EI SCIE Scopus
期刊论文 | 2018 , 8 (8) | AIP ADVANCES
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Energy harvesting based on dielectric elastomeric materials, in nature, embodies a capacitive kinetic energy conversion mechanism where the soft DE generator (DEG) interactively cooperates with conditioning circuits. Based on the principle of passive charge pump, this paper proposes a design concept for a self-cycling energy harvesting circuit driven by DEG cyclic deformation, with its essential behavioral mode laid on the electrical reciprocity between the DEG intrinsic capacitor and another capacitor connected in series. By detailed simulation experiments, the working process and dynamic characteristics of the proposed system, as well as the influence of circuital, operating, and load parameters on system performance are quantitatively investigated, with intensive discussions for the time delay behaviors caused by changes of load resistance, along with the different impacts of its value regions. Then, the theoretical analyses are effectively validated by experimental tests for a specially-designed annular DEG prototype. Under the global optimization framework based on impedance matching, this paper presents some guidelines for circuit design, e.g., the selection criteria of the capacitance and load resistance. In addition, the potential of this emerging technology is also demonstrated by experiments. (C) 2018 Author(s).

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GB/T 7714 Wang, Yongquan , Zhu, Liangquan , Zhang, Gong et al. Capacitive energy harvesting using soft dielectric elastomers: Design, testing and impedance matching optimization [J]. | AIP ADVANCES , 2018 , 8 (8) .
MLA Wang, Yongquan et al. "Capacitive energy harvesting using soft dielectric elastomers: Design, testing and impedance matching optimization" . | AIP ADVANCES 8 . 8 (2018) .
APA Wang, Yongquan , Zhu, Liangquan , Zhang, Gong , Zhong, Lincheng , Chen, Hualing . Capacitive energy harvesting using soft dielectric elastomers: Design, testing and impedance matching optimization . | AIP ADVANCES , 2018 , 8 (8) .
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