Download or read book Fabrication Characterization and Application of Metal Embedded Thin Film Sensors for Hostile Manufacturing Environments written by Xudong Cheng and published by . This book was released on 2008 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fabrication Characterization and Application of PZT silane Nano composite Thin film Sensors and Actuators written by Weiwei Xu and published by . This book was released on 2019 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring (SHM) plays a very important role in improving structural safety, preventing catastrophic failures and lowering maintenance costs. Current sensing methods have some limitations, such as being bulky, heavy, or brittle, making them unsuitable for SHM of composite structures. In response to the need for a flexible, printable sensor with low curing temperature, a nano-composite thin-film with additive manufacturing capability that consists of numerous lead-zirconate-titanate (PZT) nanoparticles embedded in a silane matrix is proposed and studied in this dissertation. This dissertation includes fabrication, characterization, and applications of proposed thin-films with rigid or flexible substrates and parallel-plate or interdigitated electrodes as piezoelectric actuators and sensors. Fabrication includes the following steps: First, PZT nanoparticles with size distribution ranging from 300 to 800 nanometers, are fabricated via hydrothermal synthesis.The PZT nanoparticles are then suspended in a silane-based fluid to form a PZT ink that can be printed, sprayed, or drop-cast onto a substrate. The deposited PZT ink is subsequently cured at low temperature (e.g., 120 7́ŒC) to form the PZT-silane thin- film sensor. A similar ink and thin-film sensor using crushed bulk PZT is also fabricated for comparison. The aerosol-jet printed results for both inks are provided and compared. Characterizing the material properties of the PZT-silane thin films includes two parts: dielectric and piezoelectric characterization. The dielectric constant and loss are measured through an impedance analyzer. Piezoelectric properties are estimated by applying a calibrated force directly onto the film while an accurate, double-end charge amplifier isolates and records the tiny induced charge from background electrical noise. A finite element model is created to simulate the experimental setup in order to estimate the piezoelectric coefficient d33 from the measurements. A PZT-silane nano-composite thin film with parallel-plate electrodes, drop-cast near the fixed edge of a thin flexible cantilever beam made of kapton, has been successfully demonstrated as an actuator. Velocity measurements at the free end are found to be in synchronization with actuation signals when driving the PZT-silane thin film actuator near natural frequencies of the beam. To demonstrate its validity as a vibration sensor, a PZT-silane thin film is attached to a square aluminum plate supported by four pillars. The frequency response of the charge measured from the PZT thin-film sensor is in close agreement with the vibration measurements from a laser Doppler vibrometer. PZT ink is drop-cast on a flexible substrate in two electrode formats for evaluation: parallel-plate and interdigitated electrodes (IDEs). The parallel-plate electrode format is difficult to implement, because silver electrodes cannot be properly printed onto the PZT film with high conductivity and dimension accuracy. In contrast, IDEs inkjet-printed onto a polyethylene terephthalate (PET) film demonstrate excellent resolution and conductivity. Sinusoidal voltage applied over the IDEs drives PZT thin-film with IDEs device into resonance serving as a resonator. PZT thin films with printed IDEs are demonstrated as vibration and strain sensors. Vibration tests are carried out on wing and beam structures with small angle oscillations. PZT thin-film with IDEs are attached on one side of these test structures and commercially acquired foil strain gauges on the other side for comparison and characterization. Strain and charge frequency domain measurements are recorded and amplitude peaks correlate to structural vibration frequencies. PZT-IDE sensor outputs at wing/beam oscillation frequency are found to increase with vibration amplitude and charge responses are approximately proportional to strain gauge outputs. This validates PZT-silane thin films with printed IDEs as strain sensors. The directional dependence of their sensing capability is demonstrated in theory, finite element analysis and experimentation. Two PZT-silane thin film devices with printed IDEs oriented 90 degrees apart show different sensitivities towards single-axis strain and experimentation proves PZT thin films with IDEs can distinguish strains in two dimensions.
Download or read book Fatigue Life Testing of Palladium chromium Thin flim Micro Strain Gages Fabricated on Superalloy Substrate written by Michael A. Miller and published by . This book was released on 2007 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manufacturing Engineering and Materials Handling 2005 written by and published by . This book was released on 2005 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Batch Manufacturing and Transfer of Embedded Thin Film Sensors and Devices for Engineering Applications and Systems written by and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon wafers has served as the batch fabrication platform for fabrication of micro / nano scale devices. However, there is a strong need to fabricate devices on engineering substrates such as metals, diamonds, ceramics etc. desired for various engineering applications. It is extremely difficult to meet such demand due to various challenges faced during microfabrication process. Here, a novel scalable platform has been developed to facilitate batch fabrication of thin film devices at the edge of the substrates of engineering materials (such as metal, ceramics etc.) with arbitrary shapes and sizes. This process is shown to effectively eliminate photolithography related challenges such as edge bead formation at the edges/corners of arbitrary shaped substrates. At the same time it enables bulk polishing of substrates and batch fabrication of thin film devices on substrates for various engineering applications. The process technique is successfully demonstrated by fabricating thin film devices on arbitrary shaped steel substrates. This process has the potential to improve the yield by allowing more devices to be fabricated simultaneously. This can reduce the production time and cost thereby facilitating large scale fabrication. Silicon substrates face another drawback that the devices fabricated on them are neither flexible nor transferrable for harsh engineering applications. A fabrication process to fabricate and transfer thin film devices embedded in polyimides to metallic foils has been developed. The thermocouple device fabricated using this method has been implemented for hard to reach engineering applications such as temperature monitoring during ultrasonic metal welding. Process of creating point defects in diamonds using high energy carbon ion bombardment is presented. Amorphization and hence point defects in polycrystalline diamond compacts (PDCs) irradiated with carbon ions is investigated using Raman spectroscopy. These PDCs are largely used in drill bits and cutting tools. Traditionally, high energy radiation sources such as electrons, protons, neutrons etc. were used for bombarding and creating defects in diamonds. Here, we present an approach to produce point defects in diamond using carbon ions. Additionally, a method is proposed to diffusion bond two diamond surfaces with the help of radiation induced point defects diffusion.
Download or read book Experimental Investigations of Nanosceond Pulsed Laser Micromachining of Metal Using Thin Film Microsensors written by Hong Seok Choi and published by . This book was released on 2007 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonintrusive Inspection Structures Monitoring and Smart Systems for Homeland Security written by Aaron A. Diaz and published by SPIE-International Society for Optical Engineering. This book was released on 2006 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Download or read book Expanding the Vision of Sensor Materials written by Committee on New Sensor Technologies: Materials and Applications and published by National Academies Press. This book was released on 1995-07-06 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in materials science and engineering have paved the way for the development of new and more capable sensors. Drawing upon case studies from manufacturing and structural monitoring and involving chemical and long wave-length infrared sensors, this book suggests an approach that frames the relevant technical issues in such a way as to expedite the consideration of new and novel sensor materials. It enables a multidisciplinary approach for identifying opportunities and making realistic assessments of technical risk and could be used to guide relevant research and development in sensor technologies.
Download or read book Thin Film Solar Cells written by Jef Poortmans and published by John Wiley & Sons. This book was released on 2006-10-16 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin-film solar cells are either emerging or about to emerge from the research laboratory to become commercially available devices finding practical various applications. Currently no textbook outlining the basic theoretical background, methods of fabrication and applications currently exist. Thus, this book aims to present for the first time an in-depth overview of this topic covering a broad range of thin-film solar cell technologies including both organic and inorganic materials, presented in a systematic fashion, by the scientific leaders in the respective domains. It covers a broad range of related topics, from physical principles to design, fabrication, characterization, and applications of novel photovoltaic devices.
Download or read book Smart Structures and Materials written by and published by . This book was released on 2000 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microelectromechanical Systems written by Committee on Advanced Materials and Fabrication Methods for Microelectromechanical Systems and published by National Academies Press. This book was released on 1997-12-15 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microelectromenchanical systems (MEMS) is a revolutionary field that adapts for new uses a technology already optimized to accomplish a specific set of objectives. The silicon-based integrated circuits process is so highly refined it can produce millions of electrical elements on a single chip and define their critical dimensions to tolerances of 100-billionths of a meter. The MEMS revolution harnesses the integrated circuitry know-how to build working microsystems from micromechanical and microelectronic elements. MEMS is a multidisciplinary field involving challenges and opportunites for electrical, mechanical, chemical, and biomedical engineering as well as physics, biology, and chemistry. As MEMS begin to permeate more and more industrial procedures, society as a whole will be strongly affected because MEMS provide a new design technology that could rival--perhaps surpass--the societal impact of integrated circuits.
Download or read book Thin Films and Coatings in Biology written by Soroush Nazarpour and published by Springer Science & Business Media. This book was released on 2013-08-15 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The surface of materials is routinely exposed to various environmental influences. Surface modification presents a technological challenge for material scientists, physicists, and engineers, particularly when those surfaces are subjected to function within human body environment. This book provides a comprehensive coverage of the major issues and topics dealing with interaction of soft living matter with the surface of implants. Fundamental scientific concepts are embedded through experimental data and a broad range of case studies. First chapters cover the basics on biocompatibility of many different thin films of metals, alloys, ceramics, hydrogels, and polymers, following with case studies dealing with orthopedic and dental coatings. Next, a novel and low-cost coating deposition technique capable of production of several types of nanostructures is introduced through simple calculations and several illustrations. Moreover, chapter 6 and 7 present important topics on surface treatment of polymers, which is a subject that has seen many developments over the past decade. The last chapters target mainly the applications of coatings in biology such as in bio-sensing, neuroscience, and cancer detection. With several illustrations, micrographs, and case studies along with suitable references in each chapter, this book will be essential for graduate students and researchers in the multidisciplinary field of bio-coatings.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atomic Layer Deposition for Semiconductors written by Cheol Seong Hwang and published by Springer Science & Business Media. This book was released on 2013-10-18 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering thorough coverage of atomic layer deposition (ALD), this book moves from basic chemistry of ALD and modeling of processes to examine ALD in memory, logic devices and machines. Reviews history, operating principles and ALD processes for each device.
Download or read book Noble Metal Metal Oxide Hybrid Nanoparticles written by Satyabrata Mohapatra and published by Elsevier. This book was released on 2018-10-11 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noble Metal-Metal Oxide Hybrid Nanoparticles: Fundamentals and Applications sets out concepts and emerging applications of hybrid nanoparticles in biomedicine, antibacterial, energy storage and electronics. The hybridization of noble metals (Gold, Silver, Palladium and Platinum) with metal-oxide nanoparticles exhibits superior features when compared to individual nanoparticles. In some cases, metal oxides act as semiconductors, such as nano zinc oxide or titanium oxide nanoparticles, where their hybridization with silver nanoparticles, enhanced significantly their photocatalytic efficiency. The book highlights how such nanomaterials are used for practical applications. Examines the properties of metal-metal oxide hybrid nanoparticles that make them so adaptable Explores the mechanisms by which nanoparticles interact with each other, showing how these can be exploited for practical applications Shows how metal oxide hybrid nanomaterials are used in a range of industry sectors, including energy, the environment and healthcare
Download or read book Handbook of Humidity Measurement Volume 2 written by Ghenadii Korotcenkov and published by CRC Press. This book was released on 2019-01-25 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of unique water properties, humidity affects many living organisms, including humans and materials. Humidity control is important in various fields, from production management to creating a comfortable living environment. The second volume of The Handbook of Humidity Measurement is entirely devoted to the consideration of different types of solid-state devices developed for humidity measurement. This volume discusses the advantages and disadvantages about the capacitive, resistive, gravimetric, hygrometric, field ionization, microwave, Schottky barrier, Kelvin probe, field-effect transistor, solid-state electrochemical, and thermal conductivity-based humidity sensors. Additional features include: Provides a comprehensive analysis of the properties of humidity-sensitive materials, used for the development of such devices. Describes numerous strategies for the fabrication and characterization of humidity sensitive materials and sensing structures used in sensor applications. Explores new approaches proposed for the development of humidity sensors. Considers conventional devices such as phsychometers, gravimetric, mechanical (hair), electrolytic, child mirror hygrometers, etc., which were used for the measurement of humidity for several centuries. Handbook of Humidity Measurement, Volume 2: Electronic and Electrical Humidity Sensors provides valuable information for practicing engineers, measurement experts, laboratory technicians, project managers in industries and national laboratories, as well as university students and professors interested in solutions to humidity measurement tasks as well as in understanding fundamentals of any gas sensor operation and development.
