Download or read book Ferroelectric Polymer PVDF Based Nanogenerator written by Jeongjae Ryu and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter deals with the development of ferroelectric polymer polyvinylidene fluoride (PVDF)-based nanogenerators. Due to its inherent flexibility, PVDF has been studied for application in nanogenerators. We first introduce PVDF and its copolymers, and briefly discuss their properties. Then, we discuss fabrication methods, including solution casting, spin coating, template-assisted method, electrospinning, thermal drawing, and dip coating. Using these methods, a wide variety of ferroelectric polymer structures can be fabricated. In addition to the performance enhancements provided by fabrication methods, the performance of PVDF-based nanogenerators has been improved by incorporating fillers that can alter the factors affecting the performance. Next, we review energy sources that can be exploited by PVDF-based nanogenerators to harvest electricity. The abundant energy sources in the environment include sound, wind flow, and thermal fluctuation. Finally, we discuss implantable PVDF-based nanogenerators. Another advantage of PVDF is its biocompatibility, which enables implantable nanogenerators. We believe that this chapter can also be helpful to researchers who study sensors and actuators as well as nanogenerators.
Download or read book Nanogenerators written by Sang Jae Kim and published by BoD – Books on Demand. This book was released on 2020-07-01 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an introduction to nanogenerators, which are the newest technological advancement in the field of energy conversion. Chapters discuss the physics behind energy conversion using detailed research results and experimental techniques for fabricating triboelectric and piezoelectric devices, as well as nanogenerators in the field of biomedicine and the construction of stretchable electrodes for wearable devices.
Download or read book Piezoelectric Energy Harvesting written by Alper Erturk and published by John Wiley & Sons. This book was released on 2011-04-04 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction. Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering. Coverage includes: Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validations Several problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations Details of introducing and modelling piezoelectric coupling for various problems Modelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verifications Applications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections A review of standard nonlinear energy harvesting circuits with modelling aspects.
Download or read book PVDF Based Ferroelectric Polymers written by and published by de Gruyter. This book was released on 2017-05-23 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book begins by introducing signals and systems, and then discusses Time-Domain analysis and Frequency-Domain analysis for Continuous-Time systems. It also covers Z-transform, state-space analysis and system synthesis. The author provides abundant examples and exercises to facilitate learning, preparing students for subsequent courses on circuit analysis and communication theory.
Download or read book Engineered Polymer Nanocomposites for Energy Harvesting Applications written by M. T. Rahul and published by Elsevier. This book was released on 2022-06-09 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineered Polymer Nanocomposites for Energy Harvesting Applications looks at materials engineering, characterization and design aspects of mechanical energy harvesting devices for superior performance. Tapping into electrical energy from various mechanical stimuli, such as stress, elongation, tension and vibration has been getting substantial research attention, however, there are many challenges associated with the development energy harvesters with efficient conversion capabilities. This title consolidates a broad spectrum of material engineering and devices design research into one resource and will be an invaluable reference for those working in this field. Provides an interdisciplinary book focused on the engineering of high performance polymer-based nanocomposites and design strategies of high performance energy harvesting Written by leading researchers in the field of materials science, polymer science and nanotechnology from industry, academia, government and private research institutions across the globe Includes broad coverage of specific analytical techniques that will assist researchers to solve fundamental and applied problems in the development of materials for energy harvesting applications
Download or read book Organic Ferroelectric Materials and Applications written by Kamal Asadi and published by Woodhead Publishing. This book was released on 2021-10-27 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Ferroelectric Materials and Applications aims to bring an up-to date account of the field with discussion of recent findings. This book presents an interdisciplinary resource for scientists from both academia and industry on the science and applications of molecular organic piezo- and ferroelectric materials. The book addresses the fundamental science of ferroelectric polymers, molecular crystals, supramolecular networks, and other key and emerging organic materials systems. It touches on important processing and characterization methods and provides an overview of current and emerging applications of organic piezoelectrics and ferroelectrics for electronics, sensors, energy harvesting, and biomedical technologies. Organic Ferroelectric Materials and Applications will be of special interest to those in academia or industry working in materials science, engineering, chemistry, and physics. Provides an overview of key physical properties of the emerging piezoelectric and ferroelectric molecular and supramolecular systems Discusses best practices of processing, patterning, and characterization methods and techniques Addresses current and emerging applications for electronics, materials development, sensors, energy harvesting, and biomedical technologies
Download or read book The Applications of Ferroelectric Polymers written by T. T. Wang and published by Springer. This book was released on 1988-06-30 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ferroelectric Piezoelectric and Dielectric Properties of Novel Polymer Nanocomposites written by Maheswar Panda and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this chapter, the Ferroelectric, Piezoelectric and Dielectric behavior of novel polymer/ceramic nano-composite (PCC) based on ferroelectric polymer [polyvinyledene fluoride (PVDF)] & nano Barium Titanate (n-BaTiO3) with different volume fractions of n-BaTiO3 (fBaTiO3), prepared through the novel cold pressing method has been discussed. The ferroelectric parameters of PCC are attributed to spherulites of PVDF, the increase of n-BaTiO3 and the ordered homogenous structure due to the novel cold pressing. The clustering of ceramic fillers is responsible for randomization of the structures of these composite ferroelectrics for some samples, leading to decrease of electrical polarisations. The piezoelectricity and piezoelectric coefficients of these composites ferroelectrics, increases with increase of ceramic filer content and remains constant beyond a certain ratio. However, the dielectric properties increase linearly as a function of ceramic content due to increase of interfaces/interfacial polarisations. The enhancement of effective dielectric constant (...õeff) is attributed to the large interfacial polarization arising due to the charge storage at the spherulites of PVDF and at the polymer/filler interfaces of PCC and have been explained on the basis of sum effect with the help of the standard models. The achieved lower loss tangent (Tan Œ¥) for the PCC as compared to the polymer/metal composites (PMC) is attributed to the highly insulating nature of PVDF & semiconducting n-BaTiO3. The thermal stability of the composites is also maintained due to the higher melting temperature (170¬∞C) of PVDF. The cold pressed PCC based on PVDF are going to act as better polymer ferroelectric/dielectrics for memory and electrical energy storage applications.
Download or read book Development of the Piezoelectric Properties of Poly vinylidene Fluoride Based Ferroelectrics and Ferroelectrets Using Fillers and Mechanical Stretching written by Nusrat Jahan and published by . This book was released on 2018 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Piezoelectric polymers are very useful in various electromechanical applications because of their strong piezoelectric response, flexibility, lightweight and formability. In addition to ferroelectric ceramics, ferroelectric polymers (such as PVDF) and ferroelectrets are also popular as a new group of piezoelectrics. Ferroelectrics based on b-PVDF are interesting due to the ease of preparation with usable piezoelectric response in addition to the above mentioned advantages of polymers. Incorporating nanofillers (e.g. ceramic filler-BaTiO3, PZT, carbon nanotube, clay, ferrite nanoparticles etc.) into PVDF is one of the facile ways to produce b phase in PVDF often followed by mechanical stretching. While fillers nucleate b phase in the PVDF matrix, subsequent mechanical stretching helps in aligning the dipoles to some extent. Therefore, the aim of the first part of this study is to prepare ferroelectric b-PVDF films by incorporating a hybrid filler (micro-CaCO3+ nanoclay) followed by mechanical stretching. While nanoclay is one of the most widely used cost-effective fillers capable of nucleating b-PVDF, synergistic improvement in b phase formation as well as in mechanical, electrical and piezoelectric properties of hybrid composites have been reported in this part of the study. Additionally, the influence of subsequent mechanical stretching e.g. draw ratio, R (final length/initial length), has also been investigated. FTIR and XRD are employed to determine the b phase content in both stretched and unstretched samples. While the tensile properties show a gradual decrease, dielectric constant increased gradually with increasing CaCO3 content in the hybrid filler. The maximum piezoelectric d33 coefficient of 30 pC/N is obtained for stretched hybrid composite films. Ferroelectrets, on the other hand, are another type of functional polymer films with heterogeneous cellular structure and internal quasi-permanent dipole moments. The piezoelectricity in ferroelectrets originates from the change in dipole moments under an applied mechanical stress. Over the past few decades, cellular polypropylene (PP) films have been the most popular and widely investigated ferroelectrets and are already in commercial applications. While the piezoelectric d33 coefficient of PP ferroelectrets could exhibit up to 1000 pC/N or more, their working temperature is quite low, not higher than 60 °C. Recently developed fluoropolymer i.e. polytetrafluoroethylene (PTFE) and fluoroethylene propylene (FEP) based ferroelectrets exhibit strong piezoelectric response and excellent thermal stability. However, processing these fluoropolymer ferroelectrets using commercially viable manufacturing technique such as cast film extrusion poses few challenges because of their very high melt viscosity, high manufacturing temperature, degradation tendency and low tensile elongation. Therefore, in this part of the study, a new thermally stable ferroelectret has been investigated using commercial processing technique with strong piezoelectric response. Cast extrusion of the polymer/filler mixture followed by mechanical stretching is one of the promising techniques for preparing a cellular polymer. Micron scale fillers are usually employed for creating voids from interfacial delamination under applied stress. Polyvinylidene fluoride (PVDF) is a fluoropolymer which is easily melt-processable than other fluoropolymers and showing excellent physical, chemical and electrical properties. An "extrusion-stretching-inflation" process has been followed to prepare a cellular structure in PVDF films. Solid PVDF/hybrid filler (micro-CaCO3 + nanoclay) films were extruded and subsequently stretched to create the initial cellular structure inside the films. While CaCO3 acts as void nucleation centers, nanoclay increases the stretchability of the highly CaCO3 filled PVDF films. Gas diffusion expansion (GDE) or controlled inflation is preformed to adjust the voids dimensions to lens-shaped voids leading to lower elastic moduli and stronger piezoelectricity. Obviously, the gas permeation characteristics in polar polymers is different than non-polar polymers because of their different type of polymer/gas interaction and the final piezoelectric properties of the ferroelectrets strongly depend on the cellular morphology such as void size, shape and distribution. Therefore, two different inflation gases i.e. neutral N2 and polar CO2 are used with various inflation strategies. Combination of pressure, temperature and their way of application (direct or step-wise) is examined for various times to optimize the inflation level. The inflated films are then subjected to corona charging at room temperature to create the dipoles inside the voids. Finally, PVDF ferroelectrets show piezoelectric d33 coefficient as high as 251 pC/N with N2 inflation and 327 pC/N for CO2 treatment. As expected, PVDF ferroelectrets exhibit better thermal stability than PP, PETP, COP and PEN and as high as Teflon. Samples charged at room temperature have their working temperature up to 120 °C
Download or read book Triboelectric Nanogenerators written by Zhong Lin Wang and published by Springer. This book was released on 2016-08-17 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces an innovative and high-efficiency technology for mechanical energy harvesting. The book covers the history and development of triboelectric nanogenerators, basic structures, working principles, performance characterization, and potential applications. It is divided into three parts: Part A illustrates the fundamental working modes of triboelectric nanogenerators with their prototype structures and theoretical analysis; Part B and Part C introduce two categories of applications, namely self-powered systems and self-powered active sensors. The book will be an ideal guide to scientists and engineers beginning to study triboelectric nanogenerators or wishing to deepen their knowledge of the field. Readers will be able to place the technical details about this technology in context, and acquire the necessary skills to reproduce the experimental setups for fabrication and measurement.
Download or read book Polymer Composites written by Srikanta Moharana and published by Springer Nature. This book was released on with total page 563 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Self Powered Smart Fabrics for Wearable Technologies written by Fatemeh Mokhtari and published by Springer Nature. This book was released on 2022-07-04 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an innovative methodology to fabricate nanostructured piezoelectric composite fibers with wearable technologies application as an energy generator and/or sensors. It reports on methods of piezoelectric fiber formation and development of novel textile structures (weave, knit, braid, coil) with embedded electrodes. The flexibility and small diameter of the final fiber make it possible to use them in garment without affecting structure of comfort. The performance of the fiber generators was evaluated through different applications such as air and water sensor, health and movement monitoring, and energy generator. The book targets a wide readership including materials scientists, electrical engineering, soft robotics, Internet of things, electronic textiles, and wearable technology.
Download or read book Processing Structure and Ferroelectric Properties of PVDF based Ferroelectric Polymers written by Nan Meng and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer Nanocomposite Based Smart Materials written by Rachid Bouhfid and published by Woodhead Publishing. This book was released on 2020-05-19 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Nanocomposite-Based Smart Materials: From Synthesis to Application provides a broad, comprehensive review on all major categories of smart materials and their preparation routes. The main application fields and properties for these diverse types of smart polymer-based composite and nanocomposite materials are also discussed. Chapters on modeling methods and simulation look at the physical or chemical change response that is introduced by the effect of changing environmental conditions such as pH, temperature, mechanical force and light. Written by scholars and experts from around the globe, the book covers key aspects, such as synthesis, processing and applications of polymer and nanocomposite-based smart materials. Features a board range of different polymer nanocomposites-based smart materials Contains coverage of synthesis applications as well as experimental, modeling and theoretical results Includes comprehensive coverage on preparation and testing methods
Download or read book Nanobatteries and Nanogenerators written by Huaihe Song and published by Elsevier. This book was released on 2020-11-21 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term ‘nanobattery’ can refer not only to the nanosized battery, but also to the uses of nanotechnology in a macro-sized battery for enhancing its performance and lifetime. Nanobatteries can offer many advantages over the traditional battery, including higher power density, shorter charging time, and longer shelf life. Nano-generators refer to the uses of nanosized devices and materials to convert mechanical, thermal and light-based energies into electricity. Similar to with traditional battery, in nanobatteries, the chemical energy is converted into electricity. This book addresses the fundamental design concepts and promising applications of nanobatteries and nanogenerators. Particular application areas include healthcare, biomedical, smart nanodevices and nanosensors, which may require new electric power sources, including self-powered ability and nanostructured electric power sources. In this regard, nanobatteries and nanogenerators represent the next generation of electric power. This is an important reference source for materials scientists, engineers and energy scientists, who are looking to increase their understanding of how nanotechnology is being used to create new energy storage and generation solutions. Outlines the major design and fabrication principles and techniques for creating nano-sized batteries and generators Demonstrates how nanotechnology is being used to make batteries and generators more powerful and longer lasting Assesses the challenges of mass manufacturing nanobatteries and nanogenerators
Download or read book 4D Printing written by Rupinder Singh and published by Elsevier. This book was released on 2022-01-11 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: 4D Printing: Fundamentals and Applications explores both autonomic and non-autonomic systems with different stimulus such as temperature, current, moisture, light and sound. In addition, the fifth dimensional aspect using more than one stimulus is outlined for additive manufacturing processes. The book presents both an introduction to the basic understanding of hybrid processes and explores the physics behind the process (in the form of derivation and numerical problems). For the field engineer, applicable codes and standards for each hybrid process are provided. Lastly, case studies are included in each section to provide the reader with a model to explore future research directions. Begins with the fundamentals of the hybrid additive manufacturing process Presents a discussion of the physics behind smart material functioning in hybrid additive manufacturing Includes real world case studies on 4D and 5D printing, as well as a look at future research dimensions
Download or read book Nanogenerators written by Inamuddin and published by CRC Press. This book was released on 2022-07-18 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth review of the history, fundamental theory, design strategies, and applications of nanogenerators. Working principles, device mechanisms, material characteristics, types of nanogenerators, and their different uses are fully explored. Top researchers in the field of sustainable technology from different backgrounds and fields contribute their expertise to deliver a must-have practical resource for students, academic researchers, and industry professionals. FEATURES Describes the fundamental aspects and theory of nanogenerators Explores design strategies including material assessment based upon planned application Tailors the introduction and essential concept discussion for the industrial and research community Explores current applications, existing challenges, and the future outlook for the field
