Teknisk anvendelse af elektroniske materialer, magnetiske materialer, optiske materialer

This thesis describes in-depth theoretical efforts to understand the reaction mechanism of graphite and lithium metal as anodes for next-generation rechargeable batteries. The first part deals with Na intercalation chemistry in graphite, whose understanding is crucial for utilizing graphite as an anode for Na-ion batteries. The author demonstrates that Na ion intercalation in graphite is thermodynamically unstable because of the unfavorable Na-graphene interaction. To address this issue, the inclusion of screening moieties, such as solvents, is suggested and proven to enable reversible Na-solvent cointercalation in graphite. Furthermore, the author provides the correlation between the intercalation behavior and the properties of solvents, suggesting a general strategy to tailor the electrochemical intercalation chemistry. The second part addresses the Li dendrite growth issue, which is preventing practical application of Li metal anodes. A continuum mechanics study considering various experimental conditions reveals the origins of irregular growth of Li metal. The findings provide crucial clues for developing effective counter strategies to control the Li metal growth, which will advance the application of high-energy-density Li metal anodes.

The book systematically accounts for the scientific and technological problems of nanostructured silicon in the form of porous and black silicon. Nanostructured silicon is currently a pioneer research topic worldwide due to its enormous potential applications for modern electronic devices, such as sensitive photodetectors, solar cells, biochemical sensors, hydrogen generators, and display devices. The main structural modifications of this nanomaterial are porous and black silicon. Porous silicon addresses crystalline silicon with nanopores and black silicon with nanoneedles. Historically, porous silicon is thought to be a kind of precursor to black silicon. The formation, research, and application of nanostructured silicon remains the main cornerstone of nanotechnologies, and this book is useful for a wide range of researchers in the fields of semiconductor physics, micro-, and nanoelectronics. The author outlines the prospect of black silicon fabrication and its various applications. As for porous silicon, the book contains a detailed analysis of this material as a precursor of black silicon. This allows it to be possible to carry out correlations between two structural modifications of nanostructured silicon to clearly and reasonably show their advantages and disadvantages. With many references to a vast resource of recently published literature, this book serves as an important and insightful source of valuable information and provides scientists and engineers with new ideas to better understand the formation processes of nanostructured silicon as well as improve and expand their properties.

This collection presents papers from the 152nd Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.

This collection presents papers from the 153rd Annual Meeting & Exhibition of The Minerals, Metals & Materials Society.

This book presents 60 selected peer-reviewed contributions from the international conference Physics and Mechanics of New Materials and Their Applications, PHENMA 2023 (3-8 October, 2023, Surabaya, Indonesia), focusing on processing techniques, physics, mechanics, and applications of advanced materials. The book describes a broad spectrum of promising nanostructures, crystal structures, materials, and composites with unique properties. It presents nanotechnological design approaches, environmental-friendly processing techniques, and physicochemical as well as mechanical studies of advanced materials. The selected contributions describe recent progress in energy harvesting and piezoelectric materials optimization, electromagnetoelastic actuators for nanotechnology research, impedance spectroscopy and study of ceramic materials, catalyst synthesis and control of morphological characteristics, synthesis and study of electrocatalysts for fuel cells. The presented results are important forongoing efforts concerning the theory, modelling, and testing of advanced materials. Other results are devoted to the analysis of technogenic raw materials and different material applications in science, technique and industry.

This book covers various subtopics of catalyst research. It provides essential background material on key concepts in catalyst technologies, along with recent developments in synthesis methods. The book delves into diverse areas such as photocatalysis, electrocatalysis, biocatalysis, and heterogeneous catalysis, offering a detailed exploration of their respective advancements, advantages, disadvantages, and applications in different catalytic reactions. It also presents fundamental ideas and overviews of noble-metal-free bifunctional electrocatalysts for overall water splitting in alkaline medium, catalytic nitrite reduction, and the utilization of catalysts supported on various materials like CeO2, Nb2O5, ZrO2, TiO2, ¿-Al2O3, SiO2, and ZSM-5 for the removal of high concentrations of nitrite in water. Moreover, the book provides insights into topics such as polyphenol oxidase mimics as catalysts, ferrites nanoparticles/graphene oxide nanoparticles and their composites as enzyme mimics and photocatalysts, electrochemical approaches with basic concepts and materials for hydrogen technologies, as well as recent advances and applications of modified-semiconductor photocatalysts in pollutant degradation. For scientists and researchers, the book offers a wealth of recent experimental and computational results, along with in-depth discussions. Some of the specific areas covered include sphalerite ZnS nanoparticles (NPs) synthesized via solvothermal method, incorporating various ruthenium (Ru) concentrations. Additionally, the book explores the modification of TiO2 as SO4/TiO2 acid and CaO/TiO2 base catalysts, and their applications in converting waste frying oil into biodiesel.

This book highlights the photogalvanic effects at low dimensions, surfaces, and interfaces, more specifically 2D materials, such as graphene and monolayer transition metal dichalcogenides. Although the phenomenology of the photogalvanic effects, which can be simply seen as photoresponse nonlinear-in-electric field, have been well-established, the microscopic understanding in each material system may vary. This book is a quick reference and a detailed roadmap starting from phenomenology and continuing with the ultimate low dimensional materials, in which the photogalvanic effects can offer a rich platform at the second-order response to an electric field. A general phenomenology of photogalvanic effect is provided in the first chapter, together with the photon drag effect which also generates a photocurrent like the photogalvanic effect, but with some distinct features, as well as somewhat puzzling similarities. Next two chapters explain these effects in graphene, starting with a necessary related background on graphene, then a particular focus on its specific phenomenology, microscopic theory, and experimental results. In a similar fashion, in chapters four and five, a necessary background for the photogalvanic effects in monolayer transition metal dichalcogenides, with symmetry analysis, microscopic theory, and experimental results is presented, along with the Berry curvature dependent photocurrent, which can also play an important role in 2D semiconductors. The second-order photogalvanic effects that have been covered so far in graphene and monolayer transition metal chalcogenides have already excited the 2D semiconductor optoelectronic research community by several means. It seems that the interests on the photogalvanic effects will continue to escalate in near future.

This collection explores the methods and challenges of containing corrosive and abrasive materials at extreme temperatures, whether they are used across commodities or technology specific. There is much to be learned from cross-commodity and cross-technology perspectives and this collection creates a platform for the exchange of ideas on the challenges, solutions, failures, and successes in furnace containment designs and applications while bringing together perspectives from industry, design houses, and research institutions. Topics include, but are not limited to: · Advances in furnace lining design philosophies· Advances in furnace design configurations and other design considerations· Problems experienced and their solutions implemented during construction and commissioning· Integration of new concepts into old smelters· Back to basics: refractory materials, shells, and cooling systems· Maintaining and monitoring· Process control and slag design· Lessons learned

This book is an introductory text for graduate students, researchers in industries, and those who are just beginning to work on organic electronics materials, devices and their applications. The book includes mainly fundamental principles and theories for understanding organic electronics materials and devices, but also provides information about state-of-the-art technologies, applications and future prospects. These topics encompass physics for organic transistors, structure control technologies of polymer semiconductors, nanomaterials electronics, organic solar cells, organic electroluminescence and dynamics for excitation, among others. In this second edition, the topics that have had particular progress in the field of organic electronics over the past seven years were added. For example, Thermally Activated Delayed Fluorescence (TADF) technology for organic LED, the development of perovskite materials, light-emitting materials using nanomaterials and the development of skin sensors and wearable/embedded devices. The recent scientific understanding of organic electronics is also introduced. This book will help readers to be able to contribute to society with the technologies and science of organic electronics materials in the future.

This book focuses on advanced optical properties and applications of tellurite glasses and tellurite glasses doped with rare-earth nanoparticles. The initial chapter presents the current state of the art in tellurite glass development, focusing on those compositions doped with nanoparticles based on rare-earth elements such as neodymium and erbium. The book then discusses various linear and nonlinear optical properties (e.g., refractive index, absorption, optical susceptibility) of these glasses in the visible and ultraviolet spectral regions. Finally, it looks at a selection of recent technological applications of doped tellurite glasses, such as highly efficient laser glass, novel temperature sensors, and advanced optical fiber material. Featuring comprehensive and up-to-date data sets, along with a topical discussion of promising new areas of application, this book is particularly suitable for researchers and industry professionals working in the field of glass manufacturing foroptics and laser applications.

This book accumulates the most recent advancements in the field of bioengineering regarding hybrid science named nanobiotechnology and enriches the readers with vast and comprehensive knowledge about different biomedical applications of nanomaterials. It includes drug and gene delivery, tissue engineering, antimicrobial properties, hyperthermia, cancer therapy, bioimaging, biosensing, photoablation therapy, etc., utilizing the potential of different nanomaterials that are helpful for the well-being of diseased individuals. Furthermore, the concerns about multidrug-resistant microorganisms are increasing daily in the healthcare system. Since conventional therapies fail to combat various infectious diseases, novel nanotechnology techniques provide an alternative approach to developing innovative biomaterials. The novel features of nanomaterials need to be exploited for use in the biomedical engineering domain. They should be fabricated so that the novel multifunctional nanomaterials not only improve drug efficacy but also reduce their side effects. Moreover, a detailed understanding of the nanotoxicological effects of promising biomedical nanomaterials should necessarily be explored using the cell culture approach. Corona of nanomaterials should be investigated in detail to determine its fate in the biological system regarding safety concerns. This is the most important feature that is novel and explored in this book and would be very helpful for customers like clinicians, scientists, engineers, and technicians who will gain extensive knowledge from this book and work together to get the desired results in the healthcare sector.

These proceedings highlight the latest advances in fundamental research, technologies and applications of hydrogen energy and fuel cells. In recent years, energy conversion between electricity and hydrogen energy has attracted increasing attention as a way to adjust the load of the grid. These conference records discuss and exchange cutting-edge findings and technological developments in fields such as new proton exchange membrane electrolysers, new electrode materials and catalysts, renewable energy, off-grid/grid-connected water electrolysis for hydrogen production, key materials and components of fuel cells, high-temperature solid oxide water electrolysis, energy storage technologies and research, CO2 hydrogenation to methanol, nitrogen to ammonia and other applications with industrial potential.The main topics of the proceedings include:1) Policies and strategies for hydrogen energy and fuel cells;2) Advanced proton exchange membranes, electrodes and catalyst materials for water electrolysis;3) Advanced hydrogen compression, storage, transportation and distribution technologies;4) Safety and related standards;5) Manufacture and R&D of key materials and components of fuel cells and stack systems.

This book provides a comprehensive overview of Nuclear Magnetic Resonance (NMR) theory, its applications, and advanced techniques to improve the quality and speed of NMR data acquisition. In this book, the author expands his outstanding Ph.D. thesis and provides a valuable resource for researchers, professionals, and students in the field of NMR spectroscopy.The book covers quantum mechanics basics, and topics like density operators, pulse sequences, 1D pulse acquisition, INEPT (Insensitive nuclei enhancement by polarization transfer), product operators, and 2D NMR principles. It also explores innovative experiments like States HSQC (Heteronuclear Single Quantum Coherence) and echo-antiecho HSQC with gradients.In the subsequent chapters, the author discusses Pure Shift NMR, including PSYCHE (Pure Shift Yielded by Chirp Excitation) and its optimizations, such as waveform parameterization and time-reversal methods. The 'Discrete PSYCHE' approach and Ultrafast PSYCHE-iDOSY (Diffusion-ordered spectroscopy) are also highlighted.This book presents the POISE (Parameter Optimisation by Iterative Spectral Evaluation) software for real-time NMR experiment optimization, including pulse width calibration and Ernst angle optimization, and demonstrates applications across various NMR experiments.Lastly, the book examines accelerated 2D NMR data collection and the NOAH (NMR by Ordered Acquisition using 1H detection) supersequences, emphasizing automated pulse program creation using GENESIS (GENEration of Supersequences In Silico). Covered NMR experiments include 13C sensitivity-enhanced HSQC, 15N HMQC (Heteronuclear Multiple Quantum Coherence), dual HSQC, HSQC-TOCSY (Total Correlation Spectroscopy), HMBC (Heteronuclear Multiple Bond Correlation), and ADEQUATE (Adequate Sensitivity Double-Quantum Spectroscopy).

This book highlights the latest advances in fundamental research, technologies and applications of hydrogen energy and fuel cells. In recent years, energy conversion between electricity and hydrogen energy has attracted increasing attention as a way to adjust the load of the grid. This book discusses and exchanges cutting-edge findings and technological developments in fields such as new proton exchange membrane electrolyzers, new electrode materials and catalysts, renewable energy, off-grid/grid-connected water electrolysis for hydrogen production, key materials and components of fuel cells, high-temperature solid oxide water electrolysis, energy storage technologies and research, CO2 hydrogenation to methanol, nitrogen to ammonia and other applications with industrial potential. The main topics of the proceedings include: 1) Policies and strategies for hydrogen energy and fuel cells; 2) Advanced proton exchange membranes, electrodes and catalyst materials for water electrolysis; 3) Advanced hydrogen compression, storage, transportation and distribution technologies; 4) Safety and related standards; 5) Manufacture and R&D of key materials and components of fuel cells and stack systems.

These Proceedings represent the metallurgical engineering and materials science research presented at the 61st Annual Conference of Metallurgists. The collection themed ¿The Pathway to Net-Zerö presents findings on a wide range of topics including:Processing of Critical MaterialsTowards Sustainable Circularity: Mining to MaterialsDeep Decarbonization Pathways for Pyrometallurgical Processes: Opportunities & ChallengesEnergy and Environmental MaterialsLight Metals for the Transportation IndustryAdvances in Materials Manufacturing VI ¿ Existing and Emerging MaterialsElectrochemical Degradation of Multi-component Materials

This book presents a complete study of natural orbitals in quantum impurity problems, revealing a certain simplicity in these interacting many-body problems. These systems consist of a few localized degrees of freedom that undergo strong interactions and hybridize with a larger system of free particles; they are central in the study of strongly correlated systems. In a first step, the standard non-perturbative numerical renormalization group method is employed to demonstrate the hierarchical structure of correlations unveiled by natural orbitals. This simplification brought new insights for simulating quantum impurity problems, and a new algorithm is developed to generate an optimized subset of natural orbitals independently of existing methods, going beyond their usual limitations. This algorithm is presented in detail in the book, and a careful benchmark on known results is carried out to guarantee the validity of the method. It is then used to study spatial entanglement structures under various conditions that were not accessible with previous methods, such as representing the electron bath by a realistic 2D square lattice or taking account of static disorder in the metallic host. In the last chapter, the non-interacting problem in the presence of disorder is studied through random matrix theory, reproducing some of the results presented in the previous chapters. The main original result of this chapter lies in the analytical calculation of the joint distribution of one-particle orbitals energies and amplitudes of the impurity, which makes it possible to calculate any disordered averaged local correlation functions. Starting from this result, calculations in the large-N limit are compared with numerical simulations.