Browse Results

Showing 30,226 through 30,250 of 75,941 results

Graphene for Defense and Security

by Andre U. Sokolnikov

Graphene is giving new impetus to the electronics industry because its band structure allows its properties to be dramatically altered and modified by chemical or electrochemical doping methods. This book provides a comprehensive source of information about graphene as a phenomenon, its physics and its mechanical and chemical properties in the light of the latest scientific and technological discoveries. The major focus of the book is on military and special applications since that is where the biggest investments are made.

Graphene for Post-Moore Silicon Optoelectronics

by Yang Xu Khurram Shehzad Srikrishna Chanakya Bodepudi Ali Imran Bin Yu

Graphene for Post-Moore Silicon Optoelectronics Provides timely coverage of an important research area that is highly relevant to advanced detection and control technology Projecting device performance beyond the scaling limits of Moore’s law requires technologies based on novel materials and device architecture. Due to its excellent electronic, thermal, and optical properties, graphene has emerged as a scalable, low-cost material with enormous integration possibilities for numerous optoelectronic applications. Graphene for Post-Moore Silicon Optoelectronics presents an up-to-date overview of the fundamentals, applications, challenges, and opportunities of integrating graphene and other 2D materials with silicon (Si) technologies. With an emphasis on graphene-silicon (Gr/Si) integrated devices in optoelectronics, this valuable resource also addresses emerging applications such as optoelectronic synaptic devices, optical modulators, and infrared image sensors. The book opens with an introduction to graphene for silicon optoelectronics, followed by chapters describing the growth, transfer, and physics of graphene/silicon junctions. Subsequent chapters each focus on a particular Gr/Si application, including high-performance photodetectors, solar energy harvesting devices, and hybrid waveguide devices. The book concludes by offering perspectives on the future challenges and prospects of Gr/Si optoelectronics, including the emergence of wafer-scale systems and neuromorphic optoelectronics. Illustrates the benefits of graphene-based electronics and hybrid device architectures that incorporate existing Si technology Covers all essential aspects of Gr/Si devices, including material synthesis, device fabrication, system integration, and related physics Summarizes current progress and future challenges of wafer-scale 2D-Si integrated optoelectronic devices Explores a wide range of Gr/Si devices, such as synaptic phototransistors, hybrid waveguide modulators, and graphene thermopile image sensors Graphene for Post-Moore Silicon Optoelectronics is essential reading for materials scientists, electronics engineers, and chemists in both academia and industry working with the next generation of Gr/Si devices.

Graphene for Transparent Conductors

by Qingbin Zheng Jang-Kyo Kim

This book provides a systematic presentation of the principles and practices behind the synthesis and functionalization of graphene and grapheme oxide (GO), as well as the fabrication techniques for transparent conductors from these materials. Transparent conductors are used in a wide variety of photoelectronic and photovoltaic devices, such as liquid crystal displays (LCDs), solar cells, optical communication devices, and solid-state lighting. Thin films made from indium tin oxide (ITO) have thus far been the dominant source of transparent conductors, and now account for 50% of indium consumption. However, the price of Indium has increased 1000% in the last 10 years. Graphene, a two-dimensional monolayer of sp2-bonded carbon atoms, has attracted significant interest because of its unique transport properties. Because of their high optical transmittance and electrical conductivity, thin film electrodes made from graphene nanosheets have been considered an ideal candidate to replace expensive ITO films. Graphene for Transparent Conductors offers a systematic presentation of the principles, theories and technical practices behind the structure-property relationship of the thin films, which are the key to the successful development of high-performance transparent conductors. At the same time, the unique perspectives provided in the applications of graphene and GO as transparent conductors will serve as a general guide to the design and fabrication of thin film materials for specific applications.

Graphene from Natural Sources: Synthesis, Characterization, and Applications

by Amir Al-Ahmed

This book examines the synthesis of graphene obtained from different natural raw materials and waste products as a low-cost, environmentally friendly alternative that delivers a quality final product. Expert researchers review potential sources of natural raw materials and waste products, methods or characterization, graphene synthesis considerations, and important applications. FEATURES Explores the different approaches to the synthesis of graphene oxide (GO) and reduced graphene oxide (rGO) from natural and industrial carbonaceous wastes Outlines the modification and characterization methods of GO and rGO Addresses the characterization methods of GO and rGO Details applications of GO and rGO created from natural sources Graphene is a multidisciplinary material with applications in almost every sector of science and engineering. Graphene from Natural Sources: Synthesis, Characterization, and Applications is a noteworthy reference for material scientists and engineers in academia and industry interested in reducing costs and employing green synthesis methods in their work.

Graphene Functionalization Strategies: From Synthesis to Applications (Carbon Nanostructures)

by Anish Khan Mohammad Jawaid Bernaurdshaw Neppolian Abdullah M. Asiri

This book discusses various aspects of graphene fictionalization strategies from inorganic oxides and organic moieties including preparation, design, and characterization of functionalization material and its applications. Including illustrations and tables summarizing the latest research on manufacturing, design, characterization and applications of graphene functionalization, it describes graphene functionalization using different techniques and materials and highlights the latest technologies in the field of manufacturing and design. This book is a valuable reference resource for lecturers, students, researchers and industrialists working in the field of material science, especially polymer composites.

Graphene Network Scaffolded Flexible Electrodes—From Lithium to Sodium Ion Batteries (Springer Theses)

by Dongliang Chao

Research on deformable and wearable electronics has promoted an increasing demand for next-generation power sources with high energy/power density that are low cost, lightweight, thin and flexible. One key challenge in flexible electrochemical energy storage devices is the development of reliable electrodes using open-framework materials with robust structures and high performance. Based on an exploration of 3D porous graphene as a flexible substrate, this book constructs free-standing, binder-free, 3D array electrodes for use in batteries, and demonstrates the reasons for the research transformation from Li to Na batteries. It incorporates the first principles of computational investigation and in situ XRD, Raman observations to systematically reveal the working mechanism of the electrodes and structure evolution during ion insertion/extraction. These encouraging results and proposed mechanisms may accelerate further development of high rate batteries using smart nanoengineering of the electrode materials, which make “Na ion battery could be better than Li ion battery” possible.

Graphene Oxide: Fundamentals and Applications

by Siegfied Eigler Ayrat M. Dimiev

Due to its unique properties, graphene oxide has become one of the most studied materials of the last decade and a great variety of applications have been reported in areas such as sensors, catalysis and biomedical applications. This comprehensive volume systematically describes the fundamental aspects and applications of graphene oxide. The book is designed as an introduction to the topic, so each chapter begins with a discussion on fundamental concepts, then proceeds to review and summarize recent advances in the field. Divided into two parts, the first part covers fundamental aspects of graphene oxide and includes chapters on formation and chemical structure, characterization methods, reduction methods, rheology and optical properties of graphene oxide solutions. Part Two covers numerous graphene oxide applications including field effect transistors, transparent conductive films, sensors, energy harvesting and storage, membranes, composite materials, catalysis and biomedical applications. In each case the differences and advantages of graphene oxide over its non-oxidised counterpart are discussed. The book concludes with a chapter on the challenges of industrial-scale graphene oxide production.Graphene Oxide: Fundamentals and Applications is a valuable reference for academic researchers, and industry scientists interested in graphene oxide, graphene and other carbon materials.

Graphene Oxide

by Wei Gao

This book focuses on a group of new materials labeled "graphene oxides. " It provides a comprehensive overview of graphene oxide-based nanomaterials in terms of their synthesis, structures, properties, and extensive applications in catalysis, separation, filtration, energy storage and conversion. The book also covers emerging research on graphite oxides and the impact of the research on fundamental and applied sciences.

Graphene Oxide: Physics and Applications

by Jijun Zhao Lizhao Liu Fen Li

This book gives a comprehensive overview of graphene oxides (GO) from atomic structures and fundamental properties to technological applications. Atomic structural models, electronic properties, mechanical properties, optical properties, and functionalizing and compositing of GO are illustrated. Moreover, the excellent physical and chemical properties offer GO promising applications in electronic nanodevices, chemical sensors and catalyst, energy storage, and biotechnology, which are also presented in this book. Therefore, this book is of interest to researchers in physics, chemistry, materials science, and nanoscience.

Graphene Oxide in Enhancing Energy Storage Devices

by Fabian I. Ezema

The world is filled with electronics devices that use batteries and supercapacitors, such as laptops, cellphones, and cameras, creating the need for the efficient and effective production of good energy storage devices. The depletion of fossil fuels demands alternative sources of energy, which prompted the creation of solar cell (PV) technologies and fuel cells. The introduction of graphene oxides to these technologies help improve the performance of various energy storage and conversion devices. This book provides a broad review of graphene oxide synthesis and applications in various energy storage devices. The chapters explore various fundamental principles and the foundations of different energy conversion and storage devices with respect to their advancement due to emergence of graphene oxide, such as supercapacitors, batteries and fuel cells. This book will enable research towards improving the performance of various energy storage devices using graphene oxides and will be a valuable reference for researchers and scientists working across physics, engineering, and chemistry on different types of graphene oxide-based energy storage and conversion devices.

Graphene Quantum Dots

by Alev Devrim Güçlü Pawel Potasz Marek Korkusinski Pawel Hawrylak

This book reflects the current status of theoretical and experimental research of graphene based nanostructures, in particular quantum dots, at a level accessible to young researchers, graduate students, experimentalists and theorists. It presents the current state of research of graphene quantum dots, a single or few monolayer thick islands of graphene. It introduces the reader to the electronic and optical properties of graphite, intercalated graphite and graphene, including Dirac fermions, Berry's phase associated with sublattices and valley degeneracy, covers single particle properties of graphene quantum dots, electron-electron interaction, magnetic properties and optical properties of gated graphene nanostructures. The electronic, optical and magnetic properties of the graphene quantum dots as a function of size, shape, type of edge and carrier density are considered. Special attention is paid to the understanding of edges and the emergence of edge states for zigzag edges. Atomistic tight binding and effective mass approaches to single particle calculations are performed. Furthermore, the theoretical and numerical treatment of electron-electron interactions at the mean-field, HF, DFT and configuration-interaction level is described in detail.

Graphene Quantum Dots: The Emerging Luminescent Nanolights (Materials Horizons: From Nature to Nanomaterials)

by Sabu Thomas T. Daniel Thangadurai N. Manjubaashini D. Nataraj

This book explores various unique characteristics of graphene quantum dots and their potential applications in a variety of fields. It provides an in-depth investigation of the present state of the art in graphene quantum dots, composites, hybrid structures, and other related topics. Various topics covered in this book are synthesis and characterization of graphene quantum dots, modelling and simulation, nanoscale applications nanosensors, bio-nanosensors, energy applications, industrial applications, healthcare applications, textile applications, and many more. Given the contents, this book is highly useful for material scientists and also the researchers and professionals in the areas of chemistry and physics.

Graphic History: The First Moon Landing (Graphic History Ser.)

by Thomas K. Adamson Gordon Purcell Terry Beatty Donald Lemke

NIMAC-sourced textbook

Graphic Science: A Journey Into Adaptation with Max Axiom, Super Scientist (Graphic Science Ser.)

by Christopher Harbo Agnieszka Biskup Cynthia Martin Barbara Schulz

NIMAC-sourced textbook

Graphical Models for Security: 5th International Workshop, GraMSec 2018, Oxford, UK, July 8, 2018, Revised Selected Papers (Lecture Notes in Computer Science #11086)

by George Cybenko David Pym Barbara Fila

This book constitutes revised selected papers from the 5th International Workshop on Graphical Models for Security, GraMSec 2018, held in Oxford, UK, in July 2018. The 7 full papers presented in this volume were carefully reviewed and selected from 21 submissions. The book also contains one invited talk. The contributions deal with the latest research and developments on graphical models for security.

Graphical Models for Security: 7th International Workshop, GraMSec 2020, Boston, MA, USA, June 22, 2020, Revised Selected Papers (Lecture Notes in Computer Science #12419)

by Harley Eades III Olga Gadyatskaya

This book constitutes the proceedings of the 7th International Workshop on Graphical Models for Security, GramSec 2020, which took place on June 22, 2020. The workshop was planned to take place in Boston, MA, USA but changed to a virtual format due to the COVID-19 pandemic. The 7 full and 3 short papers presented in this volume were carefully reviewed and selected from 14 submissions. The papers were organized in topical sections named: attack trees; attacks and risks modelling and visualization; and models for reasoning about security.

Graphics Processing Unit-Based High Performance Computing in Radiation Therapy (Series in Medical Physics and Biomedical Engineering)

by Xun Jia and Steve B. Jiang

Use the GPU Successfully in Your Radiotherapy Practice With its high processing power, cost-effectiveness, and easy deployment, access, and maintenance, the graphics processing unit (GPU) has increasingly been used to tackle problems in the medical physics field, ranging from computed tomography reconstruction to Monte Carlo radiation transport simulation. Graphics Processing Unit-Based High Performance Computing in Radiation Therapy collects state-of-the-art research on GPU computing and its applications to medical physics problems in radiation therapy. Tackle Problems in Medical Imaging and Radiotherapy The book first offers an introduction to the GPU technology and its current applications in radiotherapy. Most of the remaining chapters discuss a specific application of a GPU in a key radiotherapy problem. These chapters summarize advances and present technical details and insightful discussions on the use of GPU in addressing the problems. The book also examines two real systems developed with GPU as a core component to accomplish important clinical tasks in modern radiotherapy. Translate Research Developments to Clinical Practice Written by a team of international experts in radiation oncology, biomedical imaging, computing, and physics, this book gets clinical and research physicists, graduate students, and other scientists up to date on the latest in GPU computing for radiotherapy. It encourages you to bring this novel technology to routine clinical radiotherapy practice.

GraphITA

by Vittorio Morandi Luca Ottaviano

In recent years, graphene based research has witnessed a tremendous explosion. This two dimensional "dream" material has come into the main spotlight of fundamental and applied research in diverse nano-science fields, but surprisingly rapidly, it has also attracted the interest of major stakeholders in the private sector (especially industries in the ICT sector). The technological exploitation of graphene can be considered to be based on four fundamental interconnected wide topics: growth and synthesis methods, nano-structuring and tailoring of graphene properties, structural and physical characterization, and device design and applications. This proceedings book presents the results highlighted at GraphITA 2011, a multidisciplinary and intersectorial European Workshop on Synthesis, Characterization and Technological Exploitation of Graphene. The workshop realised on 15-18 May at Gran Sasso National Laboratories (Assegi-L'Aquila, Italy) has brought together scientists and engineers working on different technological uses of graphene in a multidisciplinary and multisectorial (academia/industry) environment.

Graphs!

by David A. Adler

Math booster author David A. Adler and artist Ed Miller make pie charts easy-as-pie charts with this fun and vibrantly illustrated guide to data collection.For students, STEM topics don&’t always feel like a walk in the park. But what if they were more like a day at the fair? Follow Janet and Ben from the Ferris Wheel to the carousel as they use graphs and data collection to make decisions about their day. This is the sixteenth book in this duo&’s math picture book series. Combining elements of a graphic story with engaging and accessible nonfiction text, David A. Adler combines his well-established STEM know-how with Edward Miller&’s vibrant, high contrast art to take young readers on a wild ride through the world of bar graphs, pictographs, pie charts, and more!

Graphs in Perturbation Theory: Algebraic Structure And Asymptotics (Springer Theses)

by Michael Borinsky

This book is the first systematic study of graphical enumeration and the asymptotic algebraic structures in perturbative quantum field theory. Starting with an exposition of the Hopf algebra structure of generic graphs, it reviews and summarizes the existing literature. It then applies this Hopf algebraic structure to the combinatorics of graphical enumeration for the first time, and introduces a novel method of asymptotic analysis to answer asymptotic questions. This major breakthrough has combinatorial applications far beyond the analysis of graphical enumeration. The book also provides detailed examples for the asymptotics of renormalizable quantum field theories, which underlie the Standard Model of particle physics. A deeper analysis of such renormalizable field theories reveals their algebraic lattice structure. The pedagogical presentation allows readers to apply these new methods to other problems, making this thesis a future classic for the study of asymptotic problems in quantum fields, network theory and far beyond.

Grappling with Gravity

by Robert W. Phillips

Grappling with Gravity explores the physiological changes that will occur in humans and the plants and animals that accompany humans as we move to new worlds, be it to colony in the emptiness of space or settlements on the Moon, Mars, or other moons or planets. This book focuses on the biomedical aspects, while not ignoring other life-changing influences of space living. For example, what happens to people physiologically in the microgravity of space, where weight and the direction "up" become meaningless? Adapting to microgravity represents the greatest environmental challenge that life will have encountered since our ancestors moved from the seas to solid Earth. Away from Earth the human body will begin almost immediately to adapt and change, to be able to function in these strange environments. As a person adapts in space he or she will become less fit to live on Earth.

Graptolite Paleobiology (TOPA Topics in Paleobiology)

by Jörg Maletz

The graptolites constitute one of the geologically most useful taxonomic groups of fossils for dating rock successions, understanding paleobiogeography and reconstructing plate tectonic configurations in the Lower Palaeozoic. Graptolites were largely planktic, marine organisms, and as one of the first groups that explored the expanses of the world’s oceans are vital for understanding Palaeozoic ecology. They are the best and often the only fossil group for dating Lower Palaeozoic rock successions precisely. Thousands of taxa have been described from all over the planet and are used for a wide variety of geological and palaeontological (biological) research topics. The recent recognition of the modern pterobranch Rhabdopleura as a living benthic graptolite enables a much better understanding and interpretation of the fossil Graptolithina. In the decades since the latest edition of the Graptolite Treatise, the enormous increase of knowledge on this group of organisms has never been synthesised in a compelling and coherent way, and information is scattered in scientific publications and difficult to sort through. This volume provides an up-to-date insight into research on graptolites. Such research has advanced considerably with the use of new methods of investigation and documentation. SEM investigation and research on ultrastructure of the tubaria has made it possible to compare extant and extinct taxa in much more detail. Cladistic interpretation of graptolite taxonomy and evolution has advanced the understanding of this group of organisms considerably in the last two decades, and has highlighted their importance in our understanding of evolutionary processes. This book will show graptolites, including their modern, living relatives, in a quite new and fascinating light, and will demonstrate the impact that the group has had on the evolution of the modern marine ecosystem. This book is aimed not only at earth scientists but also at biologists, ecologists and oceanographers. It is a readable and comprehensible volume for students at the MSc level, while remaining accessible to undergraduates and non-specialists seeking up-to-date information about this fascinating topic in palaeobiology.

Grasp: The Science Transforming How We Learn

by Sanjay Sarma Luke Yoquinto

'Sarma's book may be the most important work on education written this century' - SkepticAs the head of Open Learning at MIT, Sanjay Sarma has a daunting job description: to fling open the doors of the MIT experience for the benefit of the wider world. But if you're going to undertake such an ambitious project, you must first ask: How exactly does learning work? What conditions are most conducive? Are our traditional classroom methods - lecture, homework, test, repeat - actually effective? And if not, which techniques are?Grasp takes readers across multiple frontiers, from fundamental neuroscience to cognitive psychology and beyond, as it explores the future of learning. For instance:· Scientists are studying the role of forgetting, exposing it not as a simple failure of memory but a critical weapon in our learning arsenal· New developments in neuroimaging are helping us understand how reading works in the brain. It's become possible to identify children who might benefit from specialised dyslexia interventions - before they learn to read· Many schools have begun converting to flipped classrooms, in which you watch a lesson at home, then do your 'homework' in classAlong the way, Sarma debunks long-held views such as the noxious idea of 'learning styles,' while equipping readers with a set of practical tools for absorbing and retaining information across a lifetime of learning. He presents a vision for learning that's more inclusive and democratic - revealing a world bursting with powerful learners, just waiting for the chance they deserve.Drawing from the author's experience as an educator and the work of researchers and educational innovators at MIT and beyond, Grasp offers scientific and practical insight, promising not just to inform and entertain readers but to open their minds.

Grasp: The Science Transforming How We Learn

by Sanjay Sarma Luke Yoquinto

A groundbreaking look at the science of learning—how it's transforming education and how we can use it to discover our true potential, as individuals and across society by a renowned MIT professorAs the head of Open Learning at MIT, Sanjay Sarma has a daunting job description: to fling open the doors of the MIT experience for the benefit of the wider world. But if you're going to undertake such an ambitious project, it behooves you to ask: How exactly does learning work? What conditions are most conducive? Are our traditional classroom methods—lecture, homework, test, repeat—actually effective? And if not, which techniques are? Grasp takes readers across multiple frontiers, from fundamental neuroscience to cognitive psychology and beyond, as it explores the future of learning. Some of its findings: • Scientists are studying the role of forgetting, exposing it not as a simple failure of memory but a critical weapon in our learning arsenal. • New developments in neuroimaging are helping us understand how reading works in the brain. It's become possible to identify children who might benefit from specialized dyslexia interventions—before they learn to read.• Many schools have begun converting to flipped classrooms, in which you watch a lesson at home, then do your 'homework' in class. Through such bold instructional changes, MIT has eliminated the gender performance gap in its introductory physics courses.• By structuring its curriculum to better incorporate cutting-edge learning strategies, one law school in Florida has rocketed to the top of its state in bar exam passage rates. Along the way, Sarma debunks long-held views (such as the noxious idea of "learning styles"), while equipping readers with a set of practical tools for absorbing and retaining information across a lifetime. He presents a vision for learning that's more inclusive and democratic—revealing a world bursting with powerful learners, just waiting for the chance they deserve. Drawing from the author's experience as an educator and the work of researchers and educational innovators at MIT and beyond, Grasp offers scientific and practical insight, promising not just to inform and entertain readers but to open their minds.

Refine Search

Showing 30,226 through 30,250 of 75,941 results