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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Electronic devices & materials
This volume starts with a description of the metrics and benchmarks used to design energy-efficient microprocessor systems, followed by energy-efficient methodologies for the architecture and circuit design, DC-DC conversion, energy-efficient software and system integration.
This book reviews the structure and electronic, magnetic, and other properties of various MoS2 (Molybdenum disulfide) nanostructures, with coverage of synthesis, Valley polarization, spin physics, and other topics. MoS2 is an important, graphene-like layered nano-material that substantially extends the range of possible nanostructures and devices for nanofabrication. These materials have been widely researched in recent years, and have become an attractive topic for applications such as catalytic materials and devices based on field-effect transistors (FETs) and semiconductors. Chapters from leading scientists worldwide create a bridge between MoS2 nanomaterials and fundamental physics in order to stimulate readers' interest in the potential of these novel materials for device applications. Since MoS2 nanostructures are expected to be increasingly important for future developments in energy and other electronic device applications, this book can be recommended for Physics and Materials Science and Engineering departments and as reference for researchers in the field.
Gaining public attention due, in part, to their potential application as energy storage devices in cars, Lithium-ion batteries have encountered widespread demand, however, the understanding of lithium-ion technology has often lagged behind production. This book defines the most commonly encountered challenges from the perspective of a high-end lithium-ion manufacturer with two decades of experience with lithium-ion batteries and over six decades of experience with batteries of other chemistries. Authors with years of experience in the applied science and engineering of lithium-ion batteries gather to share their view on where lithium-ion technology stands now, what are the main challenges, and their possible solutions. The book contains real-life examples of how a subtle change in cell components can have a considerable effect on cell's performance. Examples are supported with approachable basic science commentaries. Providing a unique combination of practical know-how with an in-depth perspective, this book will appeal to graduate students, young faculty members, or others interested in the current research and development trends in lithium-ion technology.
This book represents a significant advance in our understanding of the synthesis and properties of two-dimensional (2D) materials. The author's work breaks new ground in the understanding of a number of 2D crystals, including atomically thin transition metal dichalcogenides, graphene, and their heterostructures, that are technologically important to next-generation electronics. In addition to critical new results on the direct growth of 2D heterostructures, it also details growth mechanisms, surface science, and device applications of "epi-grade" 2D semiconductors, which are essential to low-power electronics, as well as for extending Moore's law. Most importantly, it provides an effective alternative to mechanically exfoliate 2D layers for practical applications.
This thesis demonstrates the novel magnetic functionalities in cyanido-bridged metal assemblies, and as such appeals to readers in the field of materials science. The utilization of octacyanidometalates as building blocks enables the observation of (i) photo-induced magnetization due to a light-induced spin-crossover in an iron octacyanidoniobate-based assembly, (ii) photo-induced magnetization with a two-step spin-crossover behavior in an iron octacyanidoniobate-based material, and (iii) the coexistence of super-ionic conductivity and metamagnetism in a manganese-octacyanoniobate system. These multi-functionalities are achieved by incorporating a spin-crossover moiety or a hydrogen-bonding network into a cyanido-bridged network structure with a strong magnetic interaction. In particular, in light-induced spin-crossover magnets, a magnetically non-ordered state can be altered to a magnetically ordered state by photo-irradiation, which is one of the attractive mechanisms for novel optical switching devices.
Ion implantation is one of the key processing steps in silicon integrated circuit technology. Some integrated circuits require up to 17 implantation steps and circuits are seldom processed with less than 10 implantation steps. Controlled doping at controlled depths is an essential feature of implantation. Ion beam processing can also be used to improve corrosion resistance, to harden surfaces, to reduce wear and, in general, to improve materials properties. This book presents the physics and materials science of ion implantation and ion beam modification of materials. It covers ion-solid interactions used to predict ion ranges, ion straggling and lattice disorder. Also treated are shallow-junction formation and slicing silicon with hydrogen ion beams. Topics important for materials modification topics, such as ion-beam mixing, stresses, and sputtering, are also described.
This book presents the fundamentals of novel gate dielectrics that are being introduced into semiconductor manufacturing to ensure the continuous scaling of CMOS devices. As this is a rapidly evolving field of research we choose to focus on the materials that determine the performance of device applications. Most of these materials are transition metal oxides. Ironically, the d-orbitals responsible for the high dielectric constant cause severe integration difficulties, thus intrinsically limiting high-k dielectrics. Though new in the electronics industry many of these materials are well-known in the field of ceramics, and we describe this unique connection. The complexity of the structure-property relations in TM oxides requires the use of state-of-the-art first-principles calculations. Several chapters give a detailed description of the modern theory of polarization, and heterojunction band discontinuity within the framework of the density functional theory. Experimental methods include oxide melt solution calorimetry and differential scanning calorimetry, Raman scattering and other optical characterization techniques, transmission electron microscopy, and X-ray photoelectron spectroscopy. Many of the problems encountered in the world of CMOS are also relevant for other semiconductors such as GaAs. A comprehensive review of recent developments in this field is thus also given. The book will be of interest to those actively engaged in gate dielectric research, and to graduate students in Materials Science, Materials Physics, Materials Chemistry, and Electrical Engineering.
Advances in the semiconductor technology have enabled steady, exponential im- provement in the performance of integrated circuits. Miniaturization allows the integration of a larger number of transistors with enhanced switching speed. Novel transistor structures and passivation materials diminish circuit delay by minimizing parasitic electrical capacitance. These advances, however, pose several challenges for the thermal engineering of integrated circuits. The low thermal conductivities of passivation layers result in large temperature rises and temperature gradient magni- tudes, which degrade electrical characteristics of transistors and reduce lifetimes of interconnects. As dimensions of transistors and interconnects decrease, the result- ing changes in current density and thermal capacitance make these elements more susceptible to failure during brief electrical overstress. This work develops a set of high-resolution measurement techniques which de- termine temperature fields in transistors and interconnects, as well as the thermal properties of their constituent films. At the heart of these techniques is the thermore- flectance thermometry method, which is based on the temperature dependence of the reflectance of metals. Spatial resolution near 300 nm and temporal resolution near IOns are demonstrated by capturing transient temperature distributions in intercon- nects and silicon-on-insulator (SOl) high-voltage transistors. Analyses of transient temperature data obtained from interconnect structures yield thermal conductivities and volumetric heat capacities of thin films.
With the ever-increasing speed of integrated circuits, violations of the performance specifications are becoming a major factor affecting the product quality level. The need for testing timing defects is further expected to grow with the current design trend of moving towards deep submicron devices. After a long period of prevailing belief that high stuck-at fault coverage is sufficient to guarantee high quality of shipped products, the industry is now forced to rethink other types of testing. Delay testing has been a topic of extensive research both in industry and in academia for more than a decade. As a result, several delay fault models and numerous testing methodologies have been proposed. Delay Fault Testing for VLSI Circuits presents a selection of existing delay testing research results. It combines introductory material with state-of-the-art techniques that address some of the current problems in delay testing. Delay Fault Testing for VLSI Circuits covers some basic topics such as fault modeling and test application schemes for detecting delay defects. It also presents summaries and conclusions of several recent case studies and experiments related to delay testing. A selection of delay testing issues and test techniques such as delay fault simulation, test generation, design for testability and synthesis for testability are also covered. Delay Fault Testing for VLSI Circuits is intended for use by CAD and test engineers, researchers, tool developers and graduate students. It requires a basic background in digital testing. The book can used as supplementary material for a graduate-level course on VLSI testing.
This manual is intended to guide and facilitate human anatomical dissections. It is flexible enough for use in long as well as short courses. It can be particularly useful as a link with real anatomy when used together with computerised-anatomy programs, or where students do not dissect but merely look at atlases, prosections and models. There is an introduction for each anatomical region; and for each section to be dissected there is an overview, a dissection schedule which guides the student through a set of instructions, a summary and a list of objectives that are clinically important. The terminology used is the latest. The manual is suitable for medical and dental students. It is also of value for advanced knowledge of anatomy for surgery and in relation to the interpretation of normal anatomy in non-invasive imaging of anatomy for clinical diagnosis, surgical practice on cadaveric material, and in discussions about clinical problems.
Emerging Memories: Technologies and Trends attempts to provide
background and a description of the basic technology, function and
properties of emerging as well as discussing potentially suitable
applications.
This invaluable manual is intended to guide and facilitate human anatomical dissections. It is flexible enough for use in long as well as short courses, and is thus structured in such a way that the dissection of the body can be completed in 110 to 160 hours. Although some medical schools have reduced the amount of dissection, the North American schools have lengthened their courses. The manual can also be used in those courses where only part of the body is dissected and even in the study of prosected material. It can be particularly useful as a link with real anatomy when used together with computerised-anatomy programs; many curricula emphasise that the student should go back and forth between the body and computer programs. The guide is also useful where students do not dissect but merely look at atlases, prosections and models, by providing a link to real, living and variable anatomy.Nowadays many anatomy courses are aimed solely at systems anatomy. Although important as systems are, regions are clinically vital since many more problems concern damage to several systems because the lesions are regional. This is where the guide is of considerable help.There is an introduction for each anatomical region; and for each section to be dissected there is an overview, a dissection schedule which guides the student through a set of instructions, a summary and a list of objectives that are clinically important. The terminology used is the latest.This manual is suitable for medical, dental, osteopathy and chiropody schools as well as human biology and science programs that include dissection in their undergraduate gross anatomy course. It is also of value for advanced knowledge of anatomy for surgery as required by further qualifications and in relation to specialised training involving interpretation of normal anatomy in non-invasive imaging of anatomy for clinical diagnosis, practice of clinical (surgical) skills on cadaveric material, and in discussions about clinical problems.
Lithium niobate, LiNbO , is an oxide ferroelectric with various kinds of pro- 3 nouncedphysicalproperties. Thisversatilityhaspromoteditscareerinscience anddevices. Ithasbeenparticularlyfruitfulintheopticalregime,wheremany e?ects have been found in LiNbO and devices introduced using it as a host. 3 One of the few big drawbacks, namely the low level laser damage threshold based on photorefraction due to extrinsic defects was discovered very early. A relatively new topic, not involved so far in any general description, is a fundamental dependence of the optical properties of LiNbO on intrinsic de- 3 fects. Their importance has been realised out due to the development of varies growthtechniquesintherecentpast. Theprogressinthegrowthandstudiesof LiNbO crystals with di?erent composition, particularly almost stoichiomet- 3 ric ones, has revealed a signi?cant and sometimes decisive role of the intrinsic defects. For example, the photoinduced charge transport, and therefore the photorefractive properties governing the recording of the phase gratings in LiNbO , are strongly controlled by the content of intrinsic defects. The re- 3 cently found impact of intrinsic defects on the coercive ?eld in LiNbO is 3 of fundamental importance for the creation of periodically poled structures (PPLN) aimed at the optical-frequency conversion in the quasi-phase mat- ing (QPM) mode of operation. As a consequence of these results, an idea of the intrinsic defects in LiNbO has been developed during the last decade 3 and involves microscopic studies on defects, photorefraction and ferroelectric switching using spectroscopic and structure methods.
Ferroelectric memories have changed in 10 short years from academic curiosities of the university research labs to commercial devices in large-scale production. This is the first text on ferroelectric memories that is not just an edited collection of papers by different authors. Intended for applied physicists, electrical engineers, materials scientists and ceramists, it includes ferroelectric fundamentals, especially for thin films, circuit diagrams and processsing chapters, but emphazises device physics. Breakdown mechanisms, switching kinetics and leakage current mechanisms have lengthly chapters devoted to them. The book will be welcomed by research scientists in industry and government laboratories and in universities. It also contains 76 problems for students, making it particularly useful as a textbook for fourth-year undergraduate or first-year graduate students.
This book explores the conversion for solar energy into renewable liquid fuels through electrochemical reactions. The first section of the book is devoted to the theoretical fundamentals of solar fuels production, focusing on the surface properties of semiconductor materials in contact with aqueous solutions and the reaction mechanisms. The second section describes a collection of current, relevant characterization techniques, which provide essential information of the band structure of the semiconductors and carrier dynamics at the interface semiconductor. The third, and last section comprises the most recent developments in materials and engineered structures to optimize the performance of solar-to-fuel conversion devices.
"Long Wave Polar Modes in Semiconductor Heterostructures" is
concerned with the study of polar optical modes in semiconductor
heterostructures from a phenomenological approach and aims to
simplify the model of lattice dynamics calculations. The book
provides useful tools for performing calculations relevant to
anyone who might be interested in practical applications. The main focus of "Long Wave Polar Modes in Semiconductor
Heterostructures" is planar heterostructures (quantum wells or
barriers, superlattices, double barrier structures etc) but there
is also discussion on the growing field of quantum wires and dots.
Also to allow anyone reading the book to apply the techniques
discussed for planar heterostructures, the scope has been widened
to include cylindrical and spherical geometries. The book is intended as an introductory text which guides the reader through basic questions and expands to cover state-of-the-art professional topics. The book is relevant to experimentalists wanting an instructive presentation of a simple phenomenological model and theoretical tools to work with and also to young theoreticians by providing discussion of basic issues and the basis of advanced theoretical formulations. The book also provides a brief respite on the physics of piezoelectric waves as a coupling to polar optical modes.
This excellent volume covers a range of materials used for flexible electronics, including semiconductors, dielectrics, and metals. The functional integration of these different materials is treated as well. Fundamental issues for both organic and inorganic materials systems are included. A corresponding overview of technological applications, based on each materials system, is presented to give both the non-specialist and the researcher in the field relevant information on the status of the flexible electronics area.
Solid State Gas Sensing offers insight into the principles, applications, and new trends in gas sensor technology. Developments in this field are rapidly advancing due to the recent and continuing impact of nanotechnology, and this book addresses the demand for small, reliable, inexpensive and portable systems for monitoring environmental concerns, indoor air quality, food quality, and many other specific applications. Working principles, including electrical, permittivity, field effect, electrochemical, optical, thermometric and mass (both quartz and cantilever types), are discussed, making the book valuable and accessible to a variety of researchers and engineers in the field of material science.
The past five years have witnessed some dramatic developments in the general area of ferroelectric thin films materials and devices. Ferroelectrics are not new materials by any stretch ofimagination. Indeed, they have been known since the early partofthis century and popular ferroelectric materials such as Barium Titanate have been in use since the second world war. In the late sixties and seventies, a considerable amountofresearch and development effort was made to create a solid state nonvolatile memory using ferroelectrics in a vary simple matrix-addressed scheme. These attempts failed primarily due to problems associated with either the materials ordue to device architectures. The early eighties saw the advent of new materials processing approaches, such as sol-gel processing, that enabled researchers to fabricate sub-micron thin films of ferroelectric materials on a silicon substrate. These pioneering developments signaled the onsetofa revival in the areaofferroelectric thin films, especially ferroelectric nonvolatile memories. Research and development effort in ferroelectric materials and devices has now hit a feverish pitch, Many university laboratories, national laboratories and advanced R&D laboratories oflarge IC manufacturers are deeply involved in the pursuit of ferroelectric device technologies. Many companies worldwide are investing considerable manpower and resources into ferroelectric technologies. Some have already announced products ranging from embedded memories in micro controllers, low density stand-alone memories, microwave circuit elements, andrf identification tags. There is now considerable optimism that ferroelectric devices andproducts will occupy a significant market-share in the new millennium."
'Designing Embedded Processors' examines the many ways in which processor based systems are designed to allow low power devices. It looks at processor design methods, memory optimization, dynamic voltage scaling methods, compiler methods, and multi processor methods. Each section has an introductory chapter to give a breadth view, and have a few specialist chapters in the area to give a deeper perspective. The book provides a good starting point to engineers in the area, and to research students embarking upon the exciting area of embedded systems and architectures.
This book is an up-to-date self-contained compendium of the research carried out by the authors on model-based diagnosis of a class of discrete-event systems called active systems. After defining the diagnosis problem, the book copes with a variety of reasoning mechanisms that generate the diagnosis, possibly within a monitoring setting. The book is structured into twelve chapters, each of which has its own introduction and concludes with bibliographic notes and itemized summaries. Concepts and techniques are presented with the help of numerous examples, figures, and tables, and when appropriate these concepts are formalized into propositions and theorems, while detailed algorithms are expressed in pseudocode. This work is primarily intended for researchers, professionals, and graduate students in the fields of artificial intelligence and control theory.
Neutron stars are the most compact astronomical objects in the universe which are accessible by direct observation. Studying neutron stars means studying physics in regimes unattainable in any terrestrial laboratory. Understanding their observed complex phenomena requires a wide range of scientific disciplines, including the nuclear and condensed matter physics of very dense matter in neutron star interiors, plasma physics and quantum electrodynamics of magnetospheres, and the relativistic magneto-hydrodynamics of electron-positron pulsar winds interacting with some ambient medium. Not to mention the test bed neutron stars provide for general relativity theories, and their importance as potential sources of gravitational waves. It is this variety of disciplines which, among others, makes neutron star research so fascinating, not only for those who have been working in the field for many years but also for students and young scientists. The aim of this book is to serve as a reference work which not only reviews the progress made since the early days of pulsar astronomy, but especially focuses on questions such as: "What have we learned about the subject and how did we learn it?," "What are the most important open questions in this area?" and "What new tools, telescopes, observations, and calculations are needed to answer these questions?." All authors who have contributed to this book have devoted a significant part of their scientific careers to exploring the nature of neutron stars and understanding pulsars. Everyone has paid special attention to writing educational comprehensive review articles with the needs of beginners, students and young scientists as potential readers in mind. This book will be a valuable source of information for these groups.
Micro/nano-mechanical systems are a crucial part of the modern world providing a plethora of sensing and actuation functionalities used in everything from the largest cargo ships to the smallest hand-held electronics; from the most advanced scientific and medical equipment to the simplest household items. Over the past few decades, the processes used to produce these devices have improved, supporting dramatic reductions in size, but there are fundamental limits to this trend that require a new production paradigm. The 2004 discovery of graphene ushered in a new era of condensed matter physics research, that of two-dimensional materials. Being only a few atomic layers thick, this new class of materials exhibit unprecedented mechanical strength and flexibility and can couple to electric, magnetic and optical signals. Additionally, they can be combined to form van der Waals heterostructures in an almost limitless number of ways. They are thus ideal candidates to reduce the size and extend the capabilities of traditional micro/nano-mechanical systems and are poised to redefine the technological sphere. This thesis attempts to develop the framework and protocols required to produce and characterise micro/nano-mechanical devices made from two-dimensional materials. Graphene and its insulating analogue, hexagonal boron nitride, are the most widely studied materials and their heterostructures are used as the test-bed for potential device architectures and capabilities. Interlayer friction, electro-mechanical actuation and surface reconstruction are some of the key phenomena investigated in this work.
The series Advances in Polymer Science presents critical reviews of the present and future trends in polymer and biopolymer science. It covers all areas of research in polymer and biopolymer science including chemistry, physical chemistry, physics, material science. The thematic volumes are addressed to scientists, whether at universities or in industry, who wish to keep abreast of the important advances in the covered topics. Advances in Polymer Science enjoys a longstanding tradition and good reputation in its community. Each volume is dedicated to a current topic, and each review critically surveys one aspect of that topic, to place it within the context of the volume. The volumes typically summarize the significant developments of the last 5 to 10 years and discuss them critically, presenting selected examples, explaining and illustrating the important principles, and bringing together many important references of primary literature. On that basis, future research directions in the area can be discussed. Advances in Polymer Science volumes thus are important references for every polymer scientist, as well as for other scientists interested in polymer science - as an introduction to a neighboring field, or as a compilation of detailed information for the specialist. Review articles for the individual volumes are invited by the volume editors. Single contributions can be specially commissioned. Readership: Polymer scientists, or scientists in related fields interested in polymer and biopolymer science, at universities or in industry, graduate students |
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