Download or read book Materials Issues for Tunable RF and Microwave Devices III written by Steven C. Tidrow and published by Cambridge University Press. This book was released on 2014-06-05 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, first published in 2002, discusses challenges facing the implementation of an affordable tunable RF and microwave device technology. Low cost, tunable, microwave devices will have a tremendous impact on a variety of commercial and military systems, including tunable band-select filters for wireless communications, phase shifters and true time-delay devices for electronic scanning antennas, tunable radiating structures for frequency hopping, and tunable transformers to reduce RF impedance mismatch. Papers address topics from materials issues through devices and even a system-level demonstration of electronic beam steering. Specific materials issues discussed include: new tunable materials; issues of tunability, preparation and optimization of bulk and thin-film properties; materials, surface, and interface characterization; evaluation of material loss and loss mechanisms; effects of microstructure; and temperature stability. Phase shifters are featured and a new device concept for variable true time delay versus phase shift is introduced. A paraelectric lens is used to demonstrate electronic beam steering of an antenna at 10 GHz with about 2 dB of loss.
Download or read book Materials Issues for Tunable RF and Microwave Devices III Volume 720 written by Steven C. Tidrow and published by . This book was released on 2002-08-09 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Challenges facing the implementation of an affordable tunable RF and microwave device technology are discussed in these papers from an April 2002 meeting. Materials issues and devices are examined, with information on new tunable materials, issues of preparation and optimization of bulk and think film properties, material and surface characterization, evaluation of material loss and loss mechanisms, and effects of microstructure. At the device level, phase shifters are discussed and a new device concept for variable true time delay versus phase shift is introduced. At the system level, a paraelectric lens is used to demonstrate electronic beam steering of an antenna. Tidrow is affiliated with the US Army Research Laboratory. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Materials Research Society Symposium Proceedings Volume 720 Materials Issues for Tunable RF and Microwave Devices III Held in San Francisco California on April 2 3 2002 written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this symposium was to bring together researchers from a broad range of disciplines to discuss the challenges facing the implementation of an affordable tunable RF and microwave device technology. Low cost, tunable, microwave devices will have a tremendous impact on a variety of commercial and military systems, including, but not limited to, tunable band-select filters for wireless communications, phase shifters and true time delay devices for electronic scanning antennas, tunable radiating structures for frequency hopping, and tunable transformers to reduce RF impedance mismatch. The papers of this proceedings discuss a wide range of topics from materials issues through devices and even a system level demonstration of electronic beam steering. Specific materials issues discussed are: new tunable materials; issues of tunability, preparation and optimization of bulk and thin film properties; materials, surface, and interface characterization; evaluation of material loss and loss mechanisms; effects of microstructure; and temperature stability. At the device level, phase shifters are discussed and a new device concept for variable true time delay versus phase shift is introduced. At the system level, a paraelectric lens is used to demonstrate electronic beam steering of an antenna at 10 GHz with about 2 dB of loss.
Download or read book Materials and Devices for Optoelectronics and Microphotonics written by Ralf B. Wehrspohn and published by . This book was released on 2002 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume combines the proceedings of Symposium K, Materials and Devices for Optoelectronics and Photonics, and Symposium L, Photonic Crystals--From Materials to Devices, both from the 2002 MRS Spring Meeting in San Francisco. The two symposia served as a unique meeting place where a community of materials scientists and device-oriented engineers could present their latest results. Papers from Symposium K concentrate on materials for solid-state lighting, with particular emphasis on nitrides and other high-bandgap semiconductors and quantum dots, as well as materials for optical waveguides and interconnects. Presentations from Symposium L discuss theoretical methods and materials and fabrication techniques for 2D and 3D photonic crystals, with special emphasis on tunability of photonic crystals.
Download or read book Defect and Impurity Engineered Semiconductors and Devices III Volume 719 written by S. Ashok and published by . This book was released on 2002-08-09 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the deliberate introduction and manipulation of defects and impurities in order to engineer desired properties in semiconductor materials and devices. In view of current exciting developments in wide-bandgap semiconductors like GaN for blue light emission, as well as high-speed and high-temperature electronics, dopant and defect issues relevant to these materials are addressed. Also featured are semiconductor nanocavities and nano-structures, with emphasis on the formation and impact of vacancy-type defects. Defect reaction problems pertaining to impurity gettering, precipitation and hydrogen passivation are specific examples of defect engineering that improve the electronic quality of the material. A number of papers also deal with characterization techniques needed to study and to identify defects in materials and device structures. Finally, papers also address issues such as interface control and passivation, application of ion implantation, plasma treatment and rapid thermal processing for creating/activating/suppressing trap levels, and device applications.
Download or read book Defect and Impurity Engineered Semiconductors and Devices written by and published by . This book was released on 2002 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solid State Ionics 2002 Volume 756 written by Philippe Knauth and published by . This book was released on 2003-04-17 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Download or read book Silicon Materials Processing Characterization and Reliability Volume 716 written by Janice L. Veteran and published by . This book was released on 2002-10-11 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Download or read book Magnetoelectronics and Magnetic Materials Novel Phenomena and Advanced Characterization Volume 746 written by Shufeng Zhang and published by . This book was released on 2003-04 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines the proceedings of Symposium Q, Magnetoelectronics-Novel Magnetic Phenomena in Nanostructures, and Symposium R, Advanced Characterization of Artificially Structured Magnetic Materials, both from the 2002 MRS Fall Meeting in Boston. The common focus is on artificially engineered nanostructured magnetic systems. The two symposia address new phenomena in magnetoelectronic applications, their preparation, and advanced methodology for characterization. Interest in nanomagnetism has been catalyzed by advances in two fields of research. 1) Advances in materials synthesis of structures whose length scales transcend magnetic length scales and open the possibility for creating materials with new magnetic properties. Such structures include interfaces, superlattices, tunneling devices, nanostructures, and single-molecule magnets. 2) Advances in sample characterization techniques for nano-magnetism which allow detailed exploration of structure-property relationships in nanostructured magnetic systems. The volume highlights current trends in both fields and offers an outlook for further advances and new capabilities.
Download or read book Silicon Carbide 2002 Materials Processing and Devices Volume 742 written by Stephen E. Saddow and published by . This book was released on 2003-03-25 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in silicon carbide materials, processing and device design have recently resulted in implementation of SiC-based electronic systems and offer great promise in high-voltage, high-temperature and high-frequency applications. This volume focuses on new developments in basic science of SiC materials as well as rapidly maturing device technologies. The challenges in this field include understanding and decreasing defect densities in bulk SiC crystals, controlling morphology and residual impurities in epilayers, optimization of implant activation and oxide-SiC interfaces, and developing novel device structures. This book brings together the crystal growers, physicists and device experts needed to continue the rapid pace of silicon-carbide-based technology. Topics include: epitaxial growth; characterization/defects; MOS technology; SiC processing and devices.
Download or read book Materials Research Society Symposium Proceedings Volume 603 Materials Issues for Tunable RF and Microwave Devices Held November 30 December 2 1999 Boston Massachusetts USA written by and published by . This book was released on 1999 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains papers presented at Symposium KK, "Materials Issues for Tunable RF and Microwave Devices," held November 30-December 2 at the 1999 MRS Fall Meeting in Boston, Massachusetts. Electric or magnetic tunability of RF and microwave devices is desirable for a variety of civilian and military applications. In recent years, there have been tremendous advances in thin-film processing, in particular the metal-oxide thin films. Consequently, it has been recognized that the integration of nonlinear-dielectric, ferrite, colossal magnetoresistive (CMR), and superconductor materials could revolutionize tunable devices by providing new capabilities while significantly reducing size and cost. Some of the crucial issues facing the tunable RF and microwave device technology concern the material properties, in particular the loss in thin films of the tunable materials. Extensive efforts are being devoted to understand the tuning and loss mechanisms, improve thin-film processing and characterization, develop new materials, and design novel device concepts. The papers contained in this volume are a reflection of the work currently in progress in this exciting area. They range from electric-field to magnetic-field tuning, from devices to materials, and from fundamental understanding to materials characterization. The authors come from different materials communities: nonlinear dielectric, ferrite, colossal magnetoresistive (CMR), semiconductors, superconductivity, and device engineering, etc. We hope that this volume will serve as an up-to-date reference for the researchers inside and outside the field of tunable RF and microwave devices, and thus contribute to new breakthroughs in the basic and applied research in this rapidly expanding field.
Download or read book Silicon Carbide materials Processing and Devices written by and published by . This book was released on 2002 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Novel Materials and Processes for Advanced CMOS Volume 745 written by Mark I. Gardner and published by . This book was released on 2003-03-25 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in MOS integrated-circuit technology is largely driven by the ability to dimensionally scale the constituent components of individual devices and their associated interconnections. Given a set of materials with fixed properties, this scaling is finite and its predicted limits are rapidly approaching. The International Technology Roadmap for Semiconductors establishes the pace at which this scaling occurs and identifies many of the technological challenges ahead. This volume assembles representatives from the fields of materials science, physics, electrical and chemical engineering to provide an insightful review of current technology and understanding. Specifically, the intent is to discuss materials issues stemming from device scaling to sub-100nm technology nodes. Topics include: high-k characterization; atomic layer deposition; gate metal materials and integration; contacts and ultrashallow junction formation; theory and modeling and crystalline oxides for gate dielectrics.
Download or read book Defect Properties and Related Phenomena in Intermetallic Alloys Volume 753 written by Materials Research Society. Meeting and published by . This book was released on 2003-06-25 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Defects such as dislocations, antiphase domains and grain boundaries, interstitials/substitutionals, and vacancies affect many physical and mechanical properties of ordered intermetallics. As a result, they often play a decisive role in determining the macroscopic behavior of not just structural intermetallics but also 'functional' intermetallics such as shape memory alloys and hydrogen storage materials. This book follows in the general tradition of the highly successful series of MRS symposia titled High-Temperature Ordered Intermetallic Alloys. However, it also represents a significant departure from its predecessors: it includes papers on functional intermetallics in addition to papers on structural intermetallics; and focuses on defects and how they affect various properties of interest in structural and functional intermetallics. Roughly 30 percent of the papers in the book are on functional intermetallics, including materials for hydrogen storage, magnetic, and shape memory applications. The remaining papers deal with structural intermetallics, including the still active areas of nickel-, iron-, and titanium-aluminides, as well as the newer materials for ultrahigh-temperature applications.
Download or read book Molecularly Imprinted Materials sensors and Other Devices written by Kenneth J. Shea and published by . This book was released on 2002 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of two symposia held at the 2002 MRS Spring Meeting in San Francisco. Molecular imprinting (MI) technology has attracted much attention and enjoyed tremendous development over the past decade. MI technology enables the preparation of materials with host sites that recognize specific guest molecules, analogous to the "lock-and-key" paradigm of antibodies and enzymes. Advantages of molecularly imprinted materials include: a degree of specificity approaching that of antibodies but with much greater temporal and thermal stability; rapid development because precise molecular design and chemical synthesis are unnecessary; and wide applicability because materials may be imprinted with almost any shape-persistent analyte of interest. Papers from Symposium M, "Molecularly Imprinted Materials, focus primarily on the fabrication of functional materials and devices based on MI materials. Studies are presented not only by experts in MI, but more importantly, by materials scientists integrating molecular imprinting with cutting-edge techniques in microfabrication and nanotechnology.
Download or read book GaN and Related Alloys 2002 Volume 743 written by Materials Research Society. Meeting and published by . This book was released on 2003-06-02 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: This year's nitride symposium showed the scope of nitride-related advances spanning basic materials physics over process technology to high-performance devices. Progress was reported in bulk growth of GaN and AlN, growth on various substrates and substrate orientations, optical properties of InN, defect and doping analysis of p-doped GaN, and polarization properties. These led to new performance records in visible light emitter technology, i.e., higher efficiency/higher brightness, UV emitters with shorter wavelength, and UV and photo detectors. Advances in the development of nitride-based electronic devices with new heterostructure FET designs for RF power applications, including those on Si substrates and wafer fusion, are also reported. This book captures the exciting developments in this rapidly progressing field. Topics include: epitaxy - devices and defect reduction; defects and characterization; epitaxy - nonpolar orientations and alloys; optical properties; UV emitters and detectors; visible light emitters; electronic devices; characterization of defects and transport; and contacts, processing and p-type nitrides.
Download or read book Membranes Volume 752 written by Materials Research Society. Meeting and published by . This book was released on 2003-04-11 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this 2003 volume from the Materials Research Society is twofold - to provide an overview of advances in membrane science and technology and to enhance communication among membrane researchers from a variety of disciplines including chemistry, biology, biotechnology, chemical engineering and materials science. Membranes can be used for inert or reactive separations in a variety of fields including gas purification, water treatment, energy storage and conversion, bio-technology and biomedicine. The book brings together scientists involved in the entire spectrum of modern approaches to membrane science and technology to address synthesis, characterization and transport properties and their use in established and emerging applications. Topics include: membrane synthesis and preparation; surface modification and additives; hybrid and composite membranes; membrane characterization; transport phenomena in membranes; charged membranes and ion transfer; gas permeation and separation; pervaporation and vapor permeation; dense membranes for hydrogen separation; applications in biotechnology and biomedicine; and membrane R&D for industrial and emerging applications.
