The effect of gold electrode thicknesses on electromechanical performance of Nafion-based Ionic Polymer Metal Composite actuators

Yılmaz, Özgün Cem; Salmani, Ibrahim; Gürses, Barış Oğuz; Özdemir, Okan; Çetín, Levent; Sarıkanat, Mehmet; Seki, Yoldaş; Sever, Kutlay; Altınkaya, Emine

doi:10.1016/j.compositesb.2019.02.050

Cited by 26 publications

(27 citation statements)

References 36 publications

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“…It should be noted that the surface resistance of the anode (cathode) electrode decreases (increases) with increasing curvature of IPMC sample, but the sum of the two surface electrode resistances R s does not change with curvature of IPMC consulting our previous research. 14 In other words, the assumption of the single unit circuit is suitable for bending IPMC actuators.…”

Section: Methodsmentioning

confidence: 99%

“…Yang et al 13 fabricated IPMCs with various thickness and studied the effect of substrate thickness on their displacements and blocking forces. Yılmaz et al 14 investigated nonlinear relationship between electrode thickness and electroactive characteristics of IPMC actuators. Wang et al 15 studied the effects of the dimensions on sensing performance of IPMC materials, including thickness, length, and width.…”

Section: Introductionmentioning

confidence: 99%

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Longitudinal size effects on electrical and actuation behaviors of ionic polymer-metal composite

Chen

Liu

Xiong

2021

Advances in Mechanical Engineering

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The structural characteristics of ionic polymer-metal composite (IPMC) were analyzed, and the effects of IPMC length ranging from 1 to 5 cm (with a width of 0.5 cm) were evaluated in terms of electrical parameters and actuation behavior. It has been concluded that the electrical parameters of IPMC materials (including capacitance, electrode resistance in thickness-direction, and internal resistance) decrease, and the bending strain of the setpoint increases as the length increases. The simulation of the current response of IPMC to 2 V DC voltage shows that the error between simulated peak current using 1 cm-IPMC parameters and the measured value is 8.23 times higher than that of 5 cm-IPMC. The strain of the set point on 5 cm-IPMC sample is 5.65 times bigger than that of the 1 cm-IPMC sample.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Longitudinal size effects on electrical and actuation behaviors of ionic polymer-metal composite

Chen

Liu

Xiong

2021

Advances in Mechanical Engineering

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“…Efforts to produce stronger force and high powered outputs at lower cost than possible with pure Nafion have included increasing the size and stiffness of those electrolyte layers, while others have doped Nafion with silica particles or montmorillonite flakes to improve their stiffness 219–225. Recent work reported the effect of the thickness of Au electrodes on Nafion‐based IPMCs and found that blocking force of the IPMCs increases from 10 to 45 nm electrode thicknesses and begins to decrease again as thickness is ramped up from 45 to 80 nm 226. Like other IEAPs, electric fields less than 10 V are needed to achieve functional outcomes.…”

Section: Ionic Electroactive Polymersmentioning

confidence: 99%

Materials as Machines

2020

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of responsive materials as machines is in robotics. The vision, leadership, and research of Bar-Cohen is seminal in both invigorating and focusing current-day research activities to develop responsive materials [2] and implement [3] them as lightweight, dexterous, and gentle (e.g., soft) robotic elements. In this spirit, this review exhaustively details the materials, the nature of their stimuli-response, and discusses considerations for their implementation in robotic systems and subsystems.Robotics is a well-established but growing field of research. Sustained progress in both performance and functionality continue to be realized in commercial robotic systems largely based on conventional materials and their integration with mechanisms. A recent example is the Atlas robot from Boston Dynamics [4] (Figure 1a). The incorporation of stimuli-responsive materials in robotics has largely focused on component-level demonstrations to extend the performance of a subsystem (such as a hand or gripper).Stimuli-responsive materials, spanning nearly all classes of materials and size scales, are currently subject to widespread examination in corporate, government, and academic research laboratories (Figure 1b-d). [5][6][7] In some cases, these materials have already found widespread commercial implementation in end use and are comparatively mature. The materials and fundamentals of their responses are summarized in Figure 2. Shape memory alloys (SMAs) and ceramic piezoelectric materials are distinctive in that they are hard, stimuli-responsive materials. Deformation of these materials can produce large energy densities due to their inherent stiffness. Electroactive polymers (EAPs) remain a topic of considerable interest, particularly dielectric elastomer actuators (DEAs). Engineered systems are rapidly emerging and enabling performance gains in robotics, largely based on pneumatic or fluidic (such as HASEL [8] actuators) transport processes that localize deformation to generate force or produce motion. Soft materials, such as shape memory polymers (SMPs), hydrogels, and liquid crystalline polymer networks (LCNs) and elastomers (LCEs) may offer distinctive functional performance to robotic systems in allowing local control of deformation without the need for complex interfacing with mechanisms. As will be evident, each of these materials has inherent advantages and performance tradeoffs that must be considered in functional implementations. However, responsive material systems have a common obstacle to widespread use: the performance and Machines are systems that harness input power to extend or advance function. Fundamentally, machines are based on the integration of materials with mechanisms to accomplish tasks-such as generating motion or lifting an object. An emerging research paradigm is the design, synthesis, and integration of responsive materials within or as machines. Herein, a particular focus is the integration of responsive materials to enable robotic (machine) functions such as gripping, lifting, or motility (walk...

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“…Conductive polymer composites (CPCs) 1–5 have received significant attentions from both industry and academia for several decades, as they inherit the good processability from insulated polymer matrix and the excellent electrical conductivity from conductive fillers 6–10 . Fascinatingly more, the CPCs, considered as smart materials, exhibit the capability of thermal response, including positive temperature coefficient (PTC) effect, negative temperature coefficient (NTC) effect and zero temperature coefficient effect, corresponding to the increase, decline and constant of resistance with elevating temperature, respectively 11–15 .…”

Section: Introductionmentioning

confidence: 99%

Designs of conductive polymer composites with exceptional reproducibility of positive temperature coefficient effect: A review

Chen

Zhang

2020

J of Applied Polymer Sci

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Conductive polymer composites with positive temperature coefficient (PTC) effect have gained intensive attention for the potential application in the smart heating field. The PTC reproducibility is significantly essential to guarantee the security and utility of PTC composites. Regrettably, during the repeated temperature cycles, the irreversible self-aggregation of conductive filler and the random reconstruction of conductive network lead to unsatisfactory performance of PTC reproducibility. Extensive efforts have been conducted to address this issue by strategies, including modification of fillers, cross-linking of a polymer matrix, hybrids of fillers, and application of binary polymer matrix. Nevertheless, there are very limited reviews about this issue. In this review, the recent advances in fabricating PTC composites with the enhanced PTC reproducibility have been systematically summarized. Meanwhile, the current challenges and future prospects of PTC composite are also presented. We hope that this review will provide some inspirations for designing PTC materials of long-term performance for commercial applications.

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The effect of gold electrode thicknesses on electromechanical performance of Nafion-based Ionic Polymer Metal Composite actuators

Cited by 26 publications

References 36 publications

Longitudinal size effects on electrical and actuation behaviors of ionic polymer-metal composite

Longitudinal size effects on electrical and actuation behaviors of ionic polymer-metal composite

Materials as Machines

Designs of conductive polymer composites with exceptional reproducibility of positive temperature coefficient effect: A review

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