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Development Of Integrated Dielectric Elastomer Actuators Ideas
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Book Synopsis Development of Integrated Dielectric Elastomer Actuators (IDEAS) by : Alexander K. Price
Download or read book Development of Integrated Dielectric Elastomer Actuators (IDEAS) written by Alexander K. Price and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last five years, great advancements in microfluidics have been achieved with the development of "sample-in-answer-out" systems. Such systems have begun to realize the true potential of analytical miniaturization since the concept of the "micro-Total Analysis System" was first envisioned. These systems are characterized by the elegant integration of multiple fluid-handling channel architectures that enable serial execution of sample preparation, separation and detection techniques on a single device. While miniaturization and portability are often identified as key advantages for microfluidics, these highly integrated systems are heavily reliant upon large off-chip equipment, i.e. the microchip is often tethered to the laboratory via multiple syringe pumps, vacuum pumps, solenoid valves, gas cylinders and high voltage power supplies. In this dissertation, a procedure for the facile integration of dielectric elastomer (DE) actuators (called IDEAs) onto microfluidic devices is described. Poly(dimethylsiloxane) (PDMS) is commonly used as a microchip substrate because it is cheap and easy to fabricate, mechanically robust and optically transparent. The operation of an IDEA exploits the ability of PDMS to behave as a smart material and deform in the presence of an electric field. In Chapter 2, the fabrication of IDEA units on a standard microchip electrophoresis device is described. IDEA-derived injections were used to evaluate the physical performance of this novel actuator configuration. In Chapter 3, the analytical merits of IDEA-derived injections were evaluated. Sampling bias caused by electokinetic injection techniques has been problematic for conventional microchip electrophoresis systems due to the lack of fluid access. The hydrodynamic injections created by IDEA operation were found to be highly reproducible, efficient, and possess a negligible degree of sampling bias. In Chapter 4, the spatial characteristics of microchannel deformation due to IDEA actuation have been investigated using fluorescence microscopy. It was determined that the DE compresses more along the edge of the channel than in the middle of the channel. This information can be used to design a new generation of more efficient IDEAs.
Book Synopsis Dielectric Elastomers as Electromechanical Transducers by : Federico Carpi
Download or read book Dielectric Elastomers as Electromechanical Transducers written by Federico Carpi and published by Elsevier. This book was released on 2011-09-06 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric Elastomers as Electromechanical Transducers provides a comprehensive and updated insight into dielectric elastomers; one of the most promising classes of polymer-based smart materials and technologies. This technology can be used in a very broad range of applications, from robotics and automation to the biomedical field. The need for improved transducer performance has resulted in considerable efforts towards the development of devices relying on materials with intrinsic transduction properties. These materials, often termed as “smart or “intelligent , include improved piezoelectrics and magnetostrictive or shape-memory materials. Emerging electromechanical transduction technologies, based on so-called ElectroActive Polymers (EAP), have gained considerable attention. EAP offer the potential for performance exceeding other smart materials, while retaining the cost and versatility inherent to polymer materials. Within the EAP family, “dielectric elastomers , are of particular interest as they show good overall performance, simplicity of structure and robustness. Dielectric elastomer transducers are rapidly emerging as high-performance “pseudo-muscular actuators, useful for different kinds of tasks. Further, in addition to actuation, dielectric elastomers have also been shown to offer unique possibilities for improved generator and sensing devices. Dielectric elastomer transduction is enabling an enormous range of new applications that were precluded to any other EAP or smart-material technology until recently. This book provides a comprehensive and updated insight into dielectric elastomer transduction, covering all its fundamental aspects. The book deals with transduction principles, basic materials properties, design of efficient device architectures, material and device modelling, along with applications. Concise and comprehensive treatment for practitioners and academics Guides the reader through the latest developments in electroactive-polymer-based technology Designed for ease of use with sections on fundamentals, materials, devices, models and applications
Download or read book Soft Actuators written by Kinji Asaka and published by Springer. This book was released on 2014-11-17 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this book is the current comprehensive research and development of soft actuators, and encompasses interdisciplinary studies of materials science, mechanics, electronics, robotics and bioscience. As an example, the book includes current research on actuators based on biomaterials to provide future perspectives for artificial muscle technology. Readers can obtain detailed, useful information about materials, methods of synthesis, fabrication and measurements. The topics covered here not only promote further research and development of soft actuators but also lead the way to their utilization and industrialization. One outstanding feature of the book is that it contains many color figures, diagrams and photographs clearly describing the mechanism, apparatus and motion of soft actuators. The chapter on modeling is conducive to more extensive design work in materials and devices and is especially useful in the development of practical applications. Readers can acquire the newest technology and information about the basic science and practical applications of flexible, lightweight and noiseless soft actuators, which are quite unlike conventional mechanical engines and electric motors. The new ideas offered in this volume will provide inspiration and encouragement to researchers and developers as they explore new fields of applications for soft actuators.
Book Synopsis Material Characterization of a Dielectric Elastomer for the Design of a Linear Actuator by : Alexander Tristan Helal
Download or read book Material Characterization of a Dielectric Elastomer for the Design of a Linear Actuator written by Alexander Tristan Helal and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical motors and/or hydraulics and pneumatics cylinders are commonly used methods of actuation in mechanical systems. Over the last two decades, due to arising market needs, novel self-independent mobile systems such as mobility assistive devices have emerged with the help of new advancements in technology. The actuation criteria for these devices differ greatly from typical mechanical systems, which has made the implementation of classical actuators difficult within modern assistive devices. Among the numerous challenges, limited energy storage capabilities by mobile systems have restricted their achievable operational time. Furthermore, new expectations for device weight and volume, as well as actuator structural compliance, have added to this quandary. Electroactive polymers, a category of smart materials, have emerged as a strong contender for the use in low-cost efficient actuators. They have demonstrated great potential in soft robotic and assistive device/prosthetic applications due to their actuation potential and similar mechanical behaviour to human skeletal muscles. Dielectric Elastomers, in particular, have shown very promising properties for these types of applications. Their structures have shown large achievable deformation, while remaining light-weight, mechanically efficient, and low-cost. This thesis aims to characterize, and model the behaviour of 3MTM VHB polyacrylic dielectric elastomer, in order to establish a foundation for its implementation in a proposed novel linear actuator concept. In this thesis, a comprehensive experimental evaluation is accomplished, which resulted in the better understanding of the elastomer's biaxial mechanical and electro-mechanically coupled behaviours. Subsequently, a constitutive biaxial mechanical model was derived in order to provide a predictive design equation for future actuator development. This model proved effective in providing a predictive tool for the biaxial mechanical tensile response of the material. Finally, a simplified prototype was devised as a proof of concept. This first iteration applied experimental findings to validate the working principles behind the proposed actuator design. The results confirmed the proof of concept, through achieved reciprocal linear motion, and provided insight into the design considerations for prototype optimization and final actuator development.
Book Synopsis Large Deformable Soft Actuators Using Dielectric Elastomer and Origami Inspired Structures by : JangHo Park
Download or read book Large Deformable Soft Actuators Using Dielectric Elastomer and Origami Inspired Structures written by JangHo Park and published by . This book was released on 2019 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: "There have been significant developments in the field of robotics. Significant development consists of new configurations, control mechanisms, and actuators based upon its applications. Despite significant improvements in modern robotics, the biologically inspired robots has taken the center stage. Inspired by nature, biologically inspired robots are called ‘soft robots’. Within these robots lies a secret ingredient: the actuator. Soft robotic development has been driven by the idea of developing actuators that are like human muscle and are known as ‘artificial muscle’. Among different materials suitable for the development of artificial muscle, the dielectric elastomer actuator (DEA) is capable of large deformation by applying an electric field. Theoretical formulation for DEA was performed based upon the constitutive hyperelastic models and was validated by using finite element method (FEM) using ABAQUS. For FEM, multistep analysis was performed to apply pre-stretch to the membrane before applying actuation voltage. Based on the validation of DEA, different configurations of DEA were investigated. Helical dielectric elastomer actuator and origami dielectric elastomer actuator were investigated using theoretical modeling. Comparisons were made with FEM to validate the model. This study focus on the theoretical and FEM analysis of strain within the different configuration of DEA and how the actuation strain of the dielectric elastomer can be translated into contraction and/or bending of the actuator."--Abstract.
Book Synopsis Development of Dielectric Elastomer Actuators and Their Implementation in a Force Feedback Interface by : Rui Zhang
Download or read book Development of Dielectric Elastomer Actuators and Their Implementation in a Force Feedback Interface written by Rui Zhang and published by . This book was released on 2008 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Dielectric Elastomer Based Prototype Fiber Actuators by : Sohil Arora
Download or read book Development of Dielectric Elastomer Based Prototype Fiber Actuators written by Sohil Arora and published by . This book was released on 2005 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: Artificial Muscles, Dielectric, Elastomer Actuators, Cylindrical, Actuators, Fiber Actuators, Prestrain.
Book Synopsis Intelligent Textiles for Personal Protection and Safety by : Sundaresan Jayaraman
Download or read book Intelligent Textiles for Personal Protection and Safety written by Sundaresan Jayaraman and published by IOS Press. This book was released on 2006 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technology is the key to combating terrorism and protecting ordinary citizens, first responders and soldiers, among others, from danger. The area of intelligent textiles has a high potential for payoff in the fight against terrorism. Each chapter in the book provides an in-depth assessment of one particular facet of this emerging discipline - from analysis of the threats and sensing technologies to ergonomics of protecting clothing - presented by leading international experts.
Book Synopsis Development of Dielectric Elastomer Based Prototype Fiber Actuators by :
Download or read book Development of Dielectric Elastomer Based Prototype Fiber Actuators written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric elastomer based prototype fiber actuators have been developed based on the concept of cylindrical dielectric elastomer actuators (DEAs). The prototype fiber actuators have been built using commercially available dielectric elastomer tubes, having wall thickness in the range of 100-200 microns, and applying appropriate compliant electrodes to inner and outer wall of these tubes. Actuation behavior of prototype fiber actuators has been studied under different boundary conditions and as a function of applied electric field. Actuation behavior constitutes axial and radial actuation strains as well as blocking forces produced in the prototype upon actuation. Different boundary conditions were achieved by applying different prestrains on the dielectric elastomer tubes. Two types of prestrains, uniaxial and uniform, at different levels were applied. Uniaxially prestrained prototypes were fabricated by prestraining the dielectric elastomer tubes along the axial direction. Two dielectric elastomers, silicone and polyurethane, with compliant polymer based inner and outer electrodes were used for fabrication. Uniformly prestrained prototypes were fabricated by inflating the dielectric elastomer tubes with an inflation medium. To keep the actuator design simple, inner electrode was used as the inflation medium. A strong electrolyte was used as the inner electrode whereas a polymer based electrode was used as the outer electrode. An experimental set-up was designed to conduct the actuation experiments and evaluate the actuation behavior of prototype fiber actuators. Actuation strains were measured using image analysis techniques and actuation blocking forces were measured using a load cell coupled to the prototype fiber actuator. A parabolic relationship was observed between applied electric field and axial actuation strains, radial actuation strains and actuation blocking force for the developed prototypes. Upon actuation of the uniaxially prestrained prototypes it w.
Book Synopsis Development of Dielectric Elastomers as Electro-mechanical Actuators by :
Download or read book Development of Dielectric Elastomers as Electro-mechanical Actuators written by and published by . This book was released on 2013 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Dielectric Elastomer Actuators for MRI Devices by : John DeWayne Vogan
Download or read book Development of Dielectric Elastomer Actuators for MRI Devices written by John DeWayne Vogan and published by . This book was released on 2004 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) is possible. Potential applications for use in the MRI environment are introduced, and prototypes for illustrating these applications are fabricated. One such application, a reconfigurable RF coil for flexible imaging capabilities, proves that not only are DE actuators and MRI compatible, but that they can significantly enhance imaging capabilities.
Book Synopsis Design and Development of a Novel Dielectric Elastomer Travelling Wave Actuator by : Alan David Poole
Download or read book Design and Development of a Novel Dielectric Elastomer Travelling Wave Actuator written by Alan David Poole and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Slow Fluid Control Using a Dielectric Elastomer Pump (DEP) by : Jared Zane Pickery-Jordan
Download or read book Slow Fluid Control Using a Dielectric Elastomer Pump (DEP) written by Jared Zane Pickery-Jordan and published by . This book was released on 2018 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dielectric elastomers actuators (DEA) are commonly known as artificial muscles due to their muscle-like characteristics. With qualities such as high actuation deformation, fast response, low cost, and soft and silent operation, these devices promise an array of advantages for pumping. With a major historical influence of VHB in dielectric elastomer pump (DEP) designs, little focus has been directed at more reliable materials, such as silicone elastomers, and the use of conical DEA driven pumps. A novel silicone elastomer DEP design is therefore proposed with consideration towards integrating a dielectric elastomer oscillator (DEO) to eliminate driver electronics. This design consists of serially connecting three double cone actuators with valves located at the inner disks. Prototypes were formulated from the analytical and numerical modelling approach. ABAQUS was used to describe the results of the numerical modelling. Laser displacement testing followed on single-double cone actuators to quantify the actuation potential of the proposed design. After completion of the displacement testing, the double cone actuators were tested with water to determine the feasibility of the design. With 0.33 Hz 3500V and 0.2 Hz 4000V square wave signals supplied to the actuator, volumetric rates of 21.21 mm3/s and 58 mm3/s were achieved, respectively, confirming the feasibility of this design. Future work involves assembling, modelling and testing three of the double cone units, in order to fulfil the design.
Book Synopsis Development of Dielectric Elastomers and Blends for Actuator Applications by : Ruksapong Kunanuraksapong
Download or read book Development of Dielectric Elastomers and Blends for Actuator Applications written by Ruksapong Kunanuraksapong and published by . This book was released on 2010 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Development of a Novel Dielectric Elastomer Travelling Wave Actuator by : Alan David Poole
Download or read book Design and Development of a Novel Dielectric Elastomer Travelling Wave Actuator written by Alan David Poole and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Emerging Actuator Technologies by : José L. Pons
Download or read book Emerging Actuator Technologies written by José L. Pons and published by John Wiley & Sons. This book was released on 2005-09-27 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Actuators are devices that convert electrical energy into mechanical work, traditionally used in electrical, pneumatic and hydraulic systems. As the demand for actuator technologies grows in biomedical, prosthetic and orthotic applications, there is an increasing need for complex and sophisticated products that perform efficiently also when scaled to micro and nano domains. Providing a comprehensive overview of actuators for novel applications, this excellent book: * Presents a mechatronic approach to the design, control and integration of a range of technologies covering piezoelectric actuators, shape memory actuators, electro-active polymers, magnetostrictive actuators and electro- and magnetorheological actuators. * Examines the characteristics and performance of emerging actuators upon scaling to micro and nano domains. * Assesses the relative merits of each actuator technology and outlines prospective application fields. Offering a detailed analysis on current advances in the field, this publication will appeal to practising electrical and electronics engineers developing novel actuator systems. Mechanical and automation engineers, computer scientists and researchers will also find this a useful resource.
Book Synopsis Electromechanically Active Polymers by : Federico Carpi
Download or read book Electromechanically Active Polymers written by Federico Carpi and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
