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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 20 of 25 for “"electroactive polymers"”.
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Smart Systems Based on Electroactive Polymers
… and analysis of smart systems based on electroactive polymers (EAPs). Thanks to their sensing and actuation capabilities, devices based on EAPs, like ionic polymer metal composites (IPMCs), realized by using a noble metal or ionic polymer polymer composites (IP2Cs), where a conducting …
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Advanced modeling techniques for electroactive polymers transducers
Questa tesi si occupa della modellazione dei polimeri elettroattivi (gli attuatori IPMC e IP2C). Nella prima sezione è descritta un introduzione generale dei modelli proposti, mentre, nelle sezioni 2 e 3 è presentato nel dettaglio il modello multifisico degli attuatori. Tali modelli integrano i …
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Electromechanical Characterization of Poly(Dimethyl Siloxane) Based Electroactive Polymers
… properties of the resulting CN-PDMS blend as an electroactive actuator. Materials responding to an external stimulus are referred to as electroactive materials. There are several phenomena, which govern the mechanism in these materials, such as piezoelectricity, Maxwell's effect, …
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Deposition of Electroactive Polymers onto Polymer Nanofibers for Nerve Regeneration
… on the electrospun substrates, forming graft copolymers. The results of this study not only provide the foundations for a device for enhanced nerve regeneration, but also would be an enabling technology for the fabrication of improved composites of electrospun polymers and ICPs with applications …
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Electrospinning as a Processing Method for Electroactive Polymers and Composites
… to create functional materials. Three distinct electroactive materials were electrospun into fibers and fiber mats and then characterized with the intent of determining their utility in aerospace and biomedical applications such as micro-air vehicles and the cardiovascular system. Electrospun …
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Novel methods for microfluidic mixing and control
… a methodology involving the integration of electroactive polymers into microfluidic devices. Under the influence of high applied voltages, electroactive polymers with fixed boundary conditions undergo out-of-plane deformation. We use this finding to create a valve capable blocking flow in …
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Nanostructured electroactive polymeric composites for energy storage and separation applications
Electroactive polymeric materials have garnered considerable interest due to their potential applications in advancing electrochemical energy storage, sensing, catalysis, and separations systems. Electroactive polymers include conducting polymers with a-conjugated backbones and redox polymers with …
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Design of flexible actuators using electro-active polymers and CPG-based control strategies
… concepts and require-ments for using dielectric electroactive polymers (EAP) for designing of exible actuators and manipulators. A model-guided approach to design a bio-inspired exible actuator mod-ule is presented analyzed. Further, mathematical modelling for Central Pattern Generators (CPGs) is …
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Design and control strategy of a flexible, hyper-redundant robotic arm using electroactive dielectric polymers
… light-weight, relatively power-dense dielectric electroactive polymers (EAP) can also be used in unison with a flexible robotic arm structure to provide actuation. This thesis presents a variety of designs for this type of robotic arm while utilizing a EAP model-guided approach to assist in arm …
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Electroactive polymer actuators: theory and computations
Electroactive polymer actuators are devices composed of polymeric materials which display mechanical actuation under an applied electric field. This mechanical actuation coupled with the relative compliance of polymeric materials renders electroactive polymer actuators an attractive choice for soft …
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Building (as) performance : a material approach to adaptive architecture
… such as shape memory alloys (SMA's) and electroactive polymers offer new possibilities for architecture. Furthermore, an understanding of the difference between kinetics in architecture and kinetics in mechanical objects has led to investigations into evolving interplays of rigidity and …
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Homogenization Methods for Problems with Multiphysics, Temporal and Spatial Coupling
… which allows simulating effectively behavior of electroactive materials such as composites made of electroactive polymers. Secondly, homogenization was extended on wave problems where dispersion is significant and should be accounted for. Finally, the homogenization was extended on the case where …
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Designing conjugated polymer-based functional materials via the incorporation of supramolecular complexities
… supramolecular systems and conjugated polymers (CPs) have emerged as the ideal candidates for such applications. This dissertation details the design and synthesis of various CPs with pendant supramolecular complexes. The marriage of these two materials should yield complex and unique …
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Electrolyte Dependence on the Electrochemical and Optoelectronic Activity of a Conjugated Polymer in Organic Solvents
… and charge transport properties of conjugated polymers. Many high-performance electroactive polymers are hydrophobic and require processing in organic solvents. As such, these materials are characterized in nonaqueous electrolyte systems to evaluate fundamental electrochemical properties such …
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A Novel Use for Ionic Polymer Transducers for Ionic Sensing in Liquid
Ionic electroactive polymers have been developed as mechanical sensors or actuators, taking advantage of the electromechanical coupling of the materials. This research attempts to take advantage of the chemomechanical and chemoelectrical coupling by characterizing the transient response as the …
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Flexible and solution-processed organic thin film transistors for high voltage applications
… such as large electrostatic MEMS actuators, electroactive polymers, novel displays, field-emitter arrays for digital x-ray imaging as well as photovoltaic systems on glass. A high-k dielectric Bi₁.₅Zn₁Nb₁.₅O₇ and a low-k organic dielectric parylene-C were incorporated into the HVOTFT process …
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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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Developing hydrodynamic sensing capabilities for fish-like robots
… this hypothesis. The developed sensors based on electroactive polymers are pressure agnostic, physically robust and shielded from electromagnetic interference. A novel membrane-based rheotaxis sensor makes angle-of-attack measurements up to 1 m/s flow speed with a resolution below 5- degrees …
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Induced Damping And Its Relationship To Beneficial Energy Harvesting In Dielectric Elastomers With Application To Walking
… on-board electronics. Of particular interest are electroactive polymers (EAP), which unlike other types of electromechanical smart materials such as piezoelectric ceramics, which are often brittle, have low elastic modulus and can exhibit large strains without substantial stress generations. One …
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The synthesis and testing of fast switching, novel conjugated polymers for electrochromic applications
… polymer electrochromism has shown many organic electroactive polymers to have the potential to satisfy the above consumer demands. Electrochromic materials (EC) have the ability to undergo a reversible colour transformation switch upon electrochemical doping, such as colour bleaching …
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