Download or read book Microfabrication and Characterization of PVDF Copolymer Thin Films Suitable for Integrating with Optical Microsystems written by Kiran Kumar Chatrathi and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the emerging field of Micro Electro Mechanical Systems (MEMS) silicon continues to be the best material to integrate with mechanical and electrical miniature systems such as microsensors and microactuators that use various schemes of sensing and actuation. The functionality of these systems may be enhanced from extended type of materials with enhanced sensitivity and improved actuation. The integration of piezoelectric materials in MEMS facilitates the functionality of the devices. PVDF (Polyvinylidene fluoride) and its copolymers in the domain of piezoelectric materials have always been upfront to integrate with MEMS, in particular, copolymers of PVDF possess a much enhanced material properties and can eventually deliver better performance than PVDF homopolymer. The application of copolymers extends to all classes of miniaturized systems such as optical microsystems, sensors, actuators etc. In thin film technology, it is very important to have a better understanding of the crystal structure and material properties of thin films. In the present work microfabrication and characterization of P(VDF-TrFE) copolymer thin films are carried out. Various deposition techniques for PVDF thin films are presented and spin coating technique is finally adopted for microfabrication of PVDF copolymer thin films due to its advantages. Further spinning characterization of PVDF copolymer thin films are presented. An optimized set of spin parameters are found in order to develop a uniformly deposited PVDF copolymer thin films. In the current work, polarization of the films is performed through step-wise poling method. A simple experimental setup for stepwise poling method is presented. The main aspect of the present work is focused on the material characterization of the microfabricated PVDF copolymer thin films through "Fourier Transform Infrared Spectroscopy" (FTIR). An in-depth FTIR analysis on the effect of annealing PVDF copolymer thin films is presented and the analysis is extended through the study on the variation of the significant optical parameters such as absorbance and transmittance spectra in the infrared region. The study focuses on the variation of the spectra in the piezoelectric phase of the thin films. Further, the effect of polarization (poling) of PVDF copolymer thin films on the absorbance and transmittance spectra is also presented, FTIR analysis is further extended through comparison of the spectra of the microfabricated PVDF copolymer thin films with the available commercial PVDF thin films. In the present work, the mechanical properties of the spin coated PVDF copolymer thin are characterized through the measurement of piezoelectric constant, d 31 for the considered geometry of PVDF copolymer thin films. The results are compared with the measured piezoelectric constant of commercial PVDF thin film. Finally a novel variable optical attenuator (VOA) through piezoelectric actuation is presented. The design of the VOA using PVDF copolymer thin films is discussed and the optical attenuation properties of the VOA are analyzed.

Download or read book MEMS Materials and Processes Handbook written by Reza Ghodssi and published by Springer Science & Business Media. This book was released on 2011-03-18 with total page 1211 pages. Available in PDF, EPUB and Kindle. Book excerpt: MEMs Materials and Processes Handbook" is a comprehensive reference for researchers searching for new materials, properties of known materials, or specific processes available for MEMS fabrication. The content is separated into distinct sections on "Materials" and "Processes". The extensive Material Selection Guide" and a "Material Database" guides the reader through the selection of appropriate materials for the required task at hand. The "Processes" section of the book is organized as a catalog of various microfabrication processes, each with a brief introduction to the technology, as well as examples of common uses in MEMs.

Download or read book Microfluidic Devices for Biomedical Applications written by Xiujun James Li and published by Woodhead Publishing. This book was released on 2013-10-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microfluidics or lab-on-a-chip (LOC) is an important technology suitable for numerous applications from drug delivery to tissue engineering. Microfluidic devices for biomedical applications discusses the fundamentals of microfluidics and explores in detail a wide range of medical applications. The first part of the book reviews the fundamentals of microfluidic technologies for biomedical applications with chapters focussing on the materials and methods for microfabrication, microfluidic actuation mechanisms and digital microfluidic technologies. Chapters in part two examine applications in drug discovery and controlled-delivery including micro needles. Part three considers applications of microfluidic devices in cellular analysis and manipulation, tissue engineering and their role in developing tissue scaffolds and stem cell engineering. The final part of the book covers the applications of microfluidic devices in diagnostic sensing, including genetic analysis, low-cost bioassays, viral detection, and radio chemical synthesis. Microfluidic devices for biomedical applications is an essential reference for medical device manufacturers, scientists and researchers concerned with microfluidics in the field of biomedical applications and life-science industries.

Download or read book Liquid Film Coating written by P.M. Schweizer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-authored volume provides a comprehensive and in-depth account of the highly interdisciplinary science and technology of liquid film coating. The book covers fundamental principles from a wide range of scientific disciplines, including fluid mechanics aand transport phenomena, capillary hydrodynamics, surface and colloid science. The authors, all acknowledged eperts in their fields, represent a balance between industrial and academic points of view. Throughout the text, many case studies illustrate how scientific principles together with advanced experimental and theoretical methods are applied to develop and optimize manufacturing processes of eve increasing sophiatication and efficiency. In the first part of the book, the authors systematically recount the underlying physical principles and important material properties. The second part of the book gives a comprehensive overview of the most advanced experimental, mathematical and computational methods available today to investigate coating processes. The third part provides an overview and critical literature review for all major classes of liquid film coating processes of industrial importance.

Download or read book Lab on Fiber Technology written by Andrea Cusano and published by Springer. This book was released on 2014-07-29 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on a research field that is rapidly emerging as one of the most promising ones for the global optics and photonics community: the “lab-on-fiber” technology. Inspired by the well-established "lab on-a-chip" concept, this new technology essentially envisages novel and highly functionalized devices completely integrated into a single optical fiber for both communication and sensing applications. Based on the R&D experience of some of the world's leading authorities in the fields of optics, photonics, nanotechnology, and material science, this book provides a broad and accurate description of the main developments and achievements in the lab-on-fiber technology roadmap, also highlighting the new perspectives and challenges to be faced. This book is essential for scientists interested in the cutting-edge fiber optic technology, but also for graduate students.

Download or read book Ferroelectric Thin Films written by Masanori Okuyama and published by Springer Science & Business Media. This book was released on 2005-02-22 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ferroelectric thin films continue to attract much attention due to their developing applications in memory devices, FeRAM, infrared sensors, piezoelectric sensors and actuators. This book, aimed at students, researchers and developers, gives detailed information about the basic properties of these materials and the associated device physics. The contributing authors are acknowledged experts in the field.

Download or read book Microfabrication and Nanomanufacturing written by Mark J. Jackson and published by CRC Press. This book was released on 2005-11-10 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology, seen as the next leap forward in the industrial revolution, requires that manufacturers develop processes that revolutionize the way small products are made. Microfabrication and Nanomanufacturing focuses on the technology of fabrication and manufacturing of engineering materials at these levels. The book provides an overview of techniques used in the semiconductor industry. It also discusses scaling and manufacturing processes operating at the nanoscale for non-semiconductor applications; the construction of nanoscale components using established lithographic techniques; bulk and surface micromachining techniques used for etching, machining, and molding procedures; and manufacturing techniques such as injection molding and hot embossing. This authoritative compilation describes non-traditional micro and nanoscale processing that uses a newly developed technique called pulsed water jet machining as well as the efficient removal of materials using optical energy. Additional chapters focus on the development of nanoscale processes for producing products other than semiconductors; the use of abrasive particles embedded in porous tools; and the deposition and application of nanocrystalline diamond. Economic factors are also presented and concern the promotion and commercialization of micro and nanoscale products and how demand will eventually drive the market.

Download or read book Robotic Tactile Sensing written by Ravinder S. Dahiya and published by Springer Science & Business Media. This book was released on 2012-07-29 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Future robots are expected to work closely and interact safely with real-world objects and humans alike. Sense of touch is important in this context, as it helps estimate properties such as shape, texture, hardness, material type and many more; provides action related information, such as slip detection; and helps carrying out actions such as rolling an object between fingers without dropping it. This book presents an in-depth description of the solutions available for gathering tactile data, obtaining aforementioned tactile information from the data and effectively using the same in various robotic tasks. The efforts during last four decades or so have yielded a wide spectrum of tactile sensing technologies and engineered solutions for both intrinsic and extrinsic touch sensors. Nowadays, new materials and structures are being explored for obtaining robotic skin with physical features like bendable, conformable, and stretchable. Such features are important for covering various body parts of robots or 3D surfaces. Nonetheless, there exist many more hardware, software and application related issues that must be considered to make tactile sensing an effective component of future robotic platforms. This book presents an in-depth analysis of various system related issues and presents the trade-offs one may face while developing an effective tactile sensing system. For this purpose, human touch sensing has also been explored. The design hints coming out of the investigations into human sense of touch can be useful in improving the effectiveness of tactile sensory modality in robotics and other machines. Better integration of tactile sensors on a robot’s body is prerequisite for the effective utilization of tactile data. The concept of semiconductor devices based sensors is an interesting one, as it allows compact and fast tactile sensing systems with capabilities such as human-like spatio-temporal resolution. This book presents a comprehensive description of semiconductor devices based tactile sensing. In particular, novel Piezo Oxide Semiconductor Field Effect Transistor (POSFET) based approach for high resolution tactile sensing has been discussed in detail. Finally, the extension of semiconductors devices based sensors concept to large and flexile areas has been discussed for obtaining robotic or electronic skin. With its multidisciplinary scope, this book is suitable for graduate students and researchers coming from diverse areas such robotics (bio-robots, humanoids, rehabilitation etc.), applied materials, humans touch sensing, electronics, microsystems, and instrumentation. To better explain the concepts the text is supported by large number of figures.

Download or read book Shape Memory Polymers written by Jinlian Hu and published by Smithers Rapra. This book was released on 2014-05-27 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shape-memory polymers (SMP) are a unique branch of the smart materials family which are capable of changing shape on-demand upon exposure to external stimulus. The discovery of SMP made a significant breakthrough in the developments of novel smart materials for a variety of engineering applications, superseded the traditional materials, and also influenced the current methods of product designing. This book provides the latest advanced information of on-going research domains of SMP. This will certainly enlighten the reader to the achievements and tremendous potentials of SMP. The basic fundamentals of SMP, including shape-memory mechanisms and mechanics are described. This will aid reader to become more familiar with SMP and the basic concepts, thus guiding them in undergoing independent research in the SMP field. The book also provides the reader with associated challenges and existing application problems of SMP. This could assist the reader to focus more on these issues and further exploit their knowledge to look for innovative solutions. Future outlooks of SMP research are discussed as well. This book should prove to be extremely useful for academics, R&D managers, researcher scientists, engineers, and all others related to the SMP research.

Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 1860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 CMOS MEMS written by Henry Baltes and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microstructures, electronics, nanotechnology - these vast fields of research are growing together as the size gap narrows and many different materials are combined. Current research, engineering sucesses and newly commercialized products hint at the immense innovative potentials and future applications that open up once mankind controls shape and function from the atomic level right up to the visible world without any gaps. Sensor systems, microreactors, nanostructures, nanomachines, functional surfaces, integrated optics, displays, communications technology, biochips, human/machine interfaces, prosthetics, miniaturized medical and surgery equipment and many more opportunities are being explored. This new series, Advanced Micro and Nano Systems, provides cutting-edge reviews from top authors on technologies, devices and advanced systems from the micro and nano worlds.

Download or read book Combinatorial Methods for Chemical and Biological Sensors written by Radislav A. Potyrailo and published by Springer Science & Business Media. This book was released on 2009-03-21 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical sensors are in high demand for applications as varied as water pollution detection, medical diagnostics, and battlefield air analysis. Designing the next generation of sensors requires an interdisciplinary approach. The book provides a critical analysis of new opportunities in sensor materials research that have been opened up with the use of combinatorial and high-throughput technologies, with emphasis on experimental techniques. For a view of component selection with a more computational perspective, readers may refer to the complementary volume of Integrated Analytical Systems edited by M. Ryan et al., entitled “Computational Methods for Sensor Material Selection”.

Download or read book MEMS and NEMS written by Sergey Edward Lyshevski and published by CRC Press. This book was released on 2018-10-03 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of micro- and nano-mechanical systems (MEMS and NEMS) foreshadows momentous changes not only in the technological world, but in virtually every aspect of human life. The future of the field is bright with opportunities, but also riddled with challenges, ranging from further theoretical development through advances in fabrication technologies, to developing high-performance nano- and microscale systems, devices, and structures, including transducers, switches, logic gates, actuators and sensors. MEMS and NEMS: Systems, Devices, and Structures is designed to help you meet those challenges and solve fundamental, experimental, and applied problems. Written from a multi-disciplinary perspective, this book forms the basis for the synthesis, modeling, analysis, simulation, control, prototyping, and fabrication of MEMS and NEMS. The author brings together the various paradigms, methods, and technologies associated with MEMS and NEMS to show how to synthesize, analyze, design, and fabricate them. Focusing on the basics, he illustrates the development of NEMS and MEMS architectures, physical representations, structural synthesis, and optimization. The applications of MEMS and NEMS in areas such as biotechnology, medicine, avionics, transportation, and defense are virtually limitless. This book helps prepare you to take advantage of their inherent opportunities and effectively solve problems related to their configurations, systems integration, and control.

Download or read book Micro and Smart Systems written by G. K. Ananthasuresh and published by Wiley Global Education. This book was released on 2012-04-13 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microsystems are systems that integrate, on a chip or a package, one or more of many different categories of microdevices. As the past few decades were dominated by the development and rapid miniaturization of circuitry, the current and coming decades are witnessing a similar revolution in the miniaturization of sensors, actuators, and electronics; and communication, control and power devices. Applications ranging from biomedicine to warfare are driving rapid innovation and growth in the field, which is pushing this topic into graduate and undergraduate curricula in electrical, mechanical, and biomedical engineering.

Download or read book Nanotechnology Characterization Tools for Tissue Engineering and Medical Therapy written by Challa S.S.R. Kumar and published by Springer Nature. This book was released on 2019-11-22 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ninth volume of a 40 volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about Nanotechnology Characterization Tools for Tissue Engineering and Medical Therapy. Modern applications and state-of-the-art techniques are covered and make this volume an essential reading for research scientists in academia and industry.

Download or read book Microscale Surface Tension and Its Applications written by Pierre Lambert and published by MDPI. This book was released on 2019-10-21 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on advances in miniaturization and soft matter, surface tension effects are a major key to the development of soft/fluidic microrobotics. Benefiting from scaling laws, surface tension and capillary effects can enable sensing, actuation, adhesion, confinement, compliance, and other structural and functional properties necessary in micro- and nanosystems. Various applications are under development: microfluidic and lab-on-chip devices, soft gripping and manipulation of particles, colloidal and interfacial assemblies, fluidic/droplet mechatronics. The capillary action is ubiquitous in drops, bubbles and menisci, opening a broad spectrum of technological solutions and scientific investigations. Identified grand challenges to the establishment of fluidic microrobotics include mastering the dynamics of capillary effects, controlling the hysteresis arising from wetting and evaporation, improving the dispensing and handling of tiny droplets, and developing a mechatronic approach for the control and programming of surface tension effects. In this Special Issue of Micromachines, we invite contributions covering all aspects of microscale engineering relying on surface tension. Particularly, we welcome contributions on fundamentals or applications related to: Drop-botics: fluidic or surface tension-based micro/nanorobotics: capillary manipulation, gripping, and actuation, sensing, folding, propulsion and bio-inspired solutions; Control of surface tension effects: surface tension gradients, active surfactants, thermocapillarity, electrowetting, elastocapillarity; Handling of droplets, bubbles and liquid bridges: dispensing, confinement, displacement, stretching, rupture, evaporation; Capillary forces: modelling, measurement, simulation; Interfacial engineering: smart liquids, surface treatments; Interfacial fluidic and capillary assembly of colloids and devices; Biological applications of surface tension, including lab-on-chip and organ-on-chip systems.