Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"ionic polymer-metal composite"”.
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TiO2-doped Ionic Polymer-Metal Composite Actuator
Ionic polymer metal composites (IPMCs) have received substantial attention in the past several years. IPMC actuators are capable of complex deformation in water and air and they are soft actuation materials with promising applications in wide range of fields, such as robotics and medical devices. …
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Ion Conducting Polyelectrolytes in Conductive Network Composites and Humidity Sensing Applications for Ionic Polymer-Metal Composite Actuators
Ionic polymer-metal composites (IPMCs) are widely studied for their potential as electromechanical sensors and actuators. Bending of the IMPC depends on internal ion motion under an electric potential, and the addition of an ionic liquid and ionic self-assembled multilayer (ISAM) conductive network …
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Modeling and Optimizing IPMC Microgrippers
… results from varying the size and shape of IPMC (Ionic Polymer Metal Composite) fingers. Using Comsol Multiphysics and modeFRONTIER, these fingers were modeled and optimized for both force exerted and deflection. Using the Comsol model, we were able to determine the tip deflection and force output …
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Fractional Order Systems:PID Controller Design and Fractional Order Element Modeling
… one is dedicated to the modeling and control of Ionic Polymer Metal Composite (IPMC) and than a study on Fractional Order Elements modeling as possible building block for controller implementation is proposed. Finally the conclusions are presented in the Chapter 4.
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The Application of Thin Film Ionic Self-assembled Multilayer (ISAM) Nanostructures in Electromechanical Bending Actuators and Micro-fabricated Gas Chromatography (uGC) Devices
Ionic self-assembled multilayer (ISAM) thin film nanostructures, including highly porous and conductive gold nanoparticles (GNP), and highly porous and thermally stable silica nanoparticles (SNP), were fabricated via the layer-by-layer (LbL) self-assembly technique. Their application in ionic …
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Design and Characterization of Sectored (Patterned) IPMC Actuators for Propulsion and Maneuvering in Bio-Inspired Underwater Systems
… thesis is to characterize the performance of ionic polymer-metal composite (IPMCs) propulsors for underwater applications, namely for propelling and maneuvering small bio-inspired autonomous systems. Specifically, this work examines the capabilities of IPMCs with sectored (patterned) …
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Modeling, simulation and applications of ionic polymer metal composites
… model is presented to predict the behavior of Ionic Polymer Metal Composite (IPMC). The analysis is carried out using commercial software COMSOL. The response of electro actuated IPMC, including the displacement and electric potentials profiles, of the IPMC is numerically calculated. …
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Mitigating IPMC Back Relaxation Through Feedforward and Feedback Control of Patterned Electrodes
… is to minimize the back relaxation behavior in ionic polymer-metal composite (IPMC) actuators. With low driving voltage (<5V) and the ability to be operated in aqueous environments, IPMCs have gained great attention in recent years for use in many applications including soft bio-inspired …
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Advanced Manufacturing of Microengineered Ionic Polymer Metal Composites for Enhanced Sensing Capabilities
Ionic Polymer Metal Composites (IPMCs) are ionic electroactive polymers thatexhibit active and passive actuation, sensing, and energy harvesting capabilities. The composite is comprised of an ionic exchange membrane that is sandwiched between two noble metal electrodes and infused with a polar …
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Design and Development of a Bio-inspired Robotic Jellysh that Features Ionic Polymer Metal Composites Actuators
… a novel biomimetic jellyfish robot that features ionic polymer metal composite actuators. The shape and swimming style of this underwater vehicle are based on oblate jellyfish species, which are known for their high locomotive efficiency. Ionic polymer metal composites (IPMC) are used as actuators …
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Molecular design of precise ionic polymer networks for fundamental structure-property-relationships and energy-related applications
… with high stability and ""liquid-like"" ionic conductivity. In this dissertation, two model systems of network ionic polymers (nIPs) are carefully designed and investigated on how molecular structures affect their functional properties such as ionic conductivity, glass transition, and …
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Actuation and Charge Transport Modeling of Ionic Liquid-Ionic Polymer Transducers
Ionic polymer transducers (IPTs) are soft sensors and actuators which operate through a coupling of micro-scale chemical, electrical, and mechanical mechanisms. The use of ionic liquid as solvent for an IPT has been shown to dramatically increase transducer lifetime in free-air use, while also …
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Effects of Electrode Surface Morphology on the Transduction of Ionic Polymer-Metal Composites
Ionic polymer-metal composites (IPMCs) are innovative smart materials that exhibit electromechanical and mechanoelectrical transduction (conversion of electrical input into mechanical deformation and vice versa). Due to low driving voltage (< 5 V) and ability to operate in aqueous environment, …
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Applications of Layer-by-Layer Films in Electrochromic Devices and Bending Actuators
… ranging from organic, inorganic, conducting polymers, etc. The focus was on developing new materials with high contrast and long lifecycles. A detailed switching-speed study of solid-state EC devices of already-developed (PEDOT (Poly(3,4-ethylenedioxythiophene)), polyviologen, inorganic) …
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Anisotropic Morphologies and Properties in Perfluorosulfonate Ionomer-Based Materials
… attention to the nano-scale organization of the ionic and crystalline domains. Specifically, the effect of uniaxial orientation on the structure and transport properties of Nafion® membranes was examined. Small angle X-ray scattering (SAXS) experiments on dry membranes that were uniaxially …
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Feedback Control of Ionic Polymer Actuators
An ionic polymer actuator consists of a thin Nafion-117 sheet plated with gold or platinum on both sides. An ionic polymer actuator undergoes large deformation in the presence of low applied voltage across its thickness and exhibits low impedance. They can also be used as large displacement sensors …