&lt;title&gt;Measurements and macro models of ionomeric polymer-metal composites (IPMC)&lt;/title&gt;

Bao, Xiaoqi; Bar‐Cohen, Yoseph; Lih, Shyh-Shiuh

doi:10.1117/12.475167

Cited by 76 publications

(81 citation statements)

References 3 publications

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“…After an abrupt increase (F max ), the bending force decreased slowly until it stabilizes at a plateau. Similar patterns were presented in several references 3,13,14,17,19 . According to the references 1,4,18 , the charge transport in Nafion-like polymer are strongly associated to the ionic current which plays an important role on the bending mechanism of IPMC as discussed previously.…”

Section: The Effect Of the Applied Voltagesupporting

confidence: 63%

“…In response to a step voltage applied on the electrodes of a hydrated Nafion based IPMC sample, the membrane realizes a fast bending movement toward the anode followed by a slow reverse movement toward the cathode 1,2,[7][8][9] . This reverse bending movement is usuallu called by back relaxation 3 . Several electromechanical models have been proposed to explain the mechanisms responsible to the movement of the IPMC.…”

Section: Modelmentioning

confidence: 99%

“…In spite of a low driving voltage (1-3V), a hydrated IPMC sample is able to perform smooth bending movements with large displacements [1][2][3] . These features allow the integration of lighter and smaller actuators with soft structure that performs smooth movements for the development of micro-robots, micro electromechanical systems (MEMS) and artificial muscles for small devices.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Influence of the Hydration Level on the Electromechanical Behavior of Nafion Based Ionomeric Polymer-metal Composites Actuators

et al. 2015

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The ionomeric electroactive polymers-metal composites (IPMC) are materials that realize bending movements in response to an electrical stimulus and can be applied to the artificial muscles development. This paper investigated the influence of the hydration level on the electromechanical behavior of Nafion based IPMC. An experimental apparatus composed by a system to measure the bending force and to control the electrical stimulus and the relative humidity around the sample was developed. The main results indicated that samples with higher hydration level produce larger bending forces, but they show a more expressive back relaxation with lower time constant. A discussion about the results considering some models described in the literature conclude the paper.

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Section: The Effect Of the Applied Voltagesupporting

confidence: 63%

Section: Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of the Influence of the Hydration Level on the Electromechanical Behavior of Nafion Based Ionomeric Polymer-metal Composites Actuators

et al. 2015

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“…On the other hand, grey-box models are developed by using the fundamental principle while experimentally deriving values for some of the material parameters. These material parameters either represent complex physical phenomenon or process; or describe material property that cannot be measured directly [3,8,9]. Lastly, physical models are based on the physical principle of transduction [10,11].…”

Section: Introductionmentioning

confidence: 99%

Ionic polymer–metal composite mechanoelectric transduction: effect of impedance

Tiwari

2012

International Journal of Smart and Nano Materials

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To cite this article: Rashi Tiwari (2012) Ionic polymer-metal composite mechanoelectric transduction: effect of impedance, International Journal of Smart and Nano Materials, 3:4, 275-295, DOI: 10.1080/19475411.2012 Ionic polymer-metal composites (IPMCs) are commonly used as soft actuators due to their electromechanical response. However, the reverse phenomenon, i.e. IPMC's ability to generate charge on application of mechanical strain (mechanoelectric response), is not very well understood. The concept of mechanoelectric transduction and its dependence on complex IPMC architecture comprising of electrode, polymer and composite layer is illustrated with a phenomenological model. The impedance model takes into account the charge transport inside the polymer and layer properties in terms of their impedances. The model lucidly indicates the significance of capacitance in IPMC transduction. The impedance model is used for studying IPMC step and frequency response and the effect of IPMC capacitance on its application as energy harvester.

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“…While actuator can be modeled by a capacitor and a resistor [17], the use of PWM can adjust the level of V RMS . Then, the control of bending angle is possible.…”

Section: Control Systemmentioning

confidence: 99%

Development of an hexapod biomicrorobot with Nafion-Pt IPMC microlegs

Otis

Bernier

Pasco

et al. 2003

Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (IEEE Cat. No.0

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Abstract-This paper presents an artificial locomotion servo-system for an insect like hexapod BioMicroRobot (BMR). This servo-system, programmed with VHDL code, will act as a driver in a RISC architecture microcontroller to reproduce insect tripod walking. An overview of the robot control system, in accordance with the insect displacement principle, is demonstrated with timing parameters. A control algorithm of the six legs driving the robot in any direction versus Pulse Width Modulation (PWM) is reviewed. BMR microlegs are built with cylindrical Nafion-Pt Ionomeric Polymer-Metal Composite (IPMC) that have 2.5 degrees of freedom. Specific fabrication process for one leg is exposed. Dynamic behavior and microleg characteristics have been measured in deionized water using a laser vibrometer. BMR current consumption is an important parameter evaluated for each leg. Hardware test bench to acquired measurement is presented. The purpose of this design is to control a BMR for biomedical goals like implantation in human body. Experimental results on the proposed legs are conclusive for this type of bioinspired BMR.

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<title>Measurements and macro models of ionomeric polymer-metal composites (IPMC)</title>

Cited by 76 publications

References 3 publications

Study of the Influence of the Hydration Level on the Electromechanical Behavior of Nafion Based Ionomeric Polymer-metal Composites Actuators

Study of the Influence of the Hydration Level on the Electromechanical Behavior of Nafion Based Ionomeric Polymer-metal Composites Actuators

Ionic polymer–metal composite mechanoelectric transduction: effect of impedance

Development of an hexapod biomicrorobot with Nafion-Pt IPMC microlegs

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