Theory of Low-Temperature Plasma Physics


Book Description

This book offers the reader an overview of the basic approaches to the theoretical description of low-temperature plasmas, covering numerical methods, mathematical models and modeling techniques. The main methods of calculating the cross sections of plasma particle interaction and the solution of the kinetic Boltzmann equation for determining the transport coefficients of the plasma are also presented. The results of calculations of thermodynamic properties, transport coefficients, the equilibrium particle-interaction cross sections and two-temperature plasmas are also discussed. Later chapters consider applications, and the results of simulation and calculation of plasma parameters in induction and arc plasma torches are presented. The complex physical processes in high-frequency plasmas and arc plasmas, the internal and external parameters of plasma torches, near-electrode processes, heat transfer, the flow of solid particles in plasmas and other phenomena are considered. The book is intended for professionals involved in the theoretical study of low-temperature plasmas and the design of plasma torches, and will be useful for advanced students in related areas.




Rigidity Theory and Applications


Book Description

Although rigidity has been studied since the time of Lagrange (1788) and Maxwell (1864), it is only in the last twenty-five years that it has begun to find applications in the basic sciences. The modern era starts with Laman (1970), who made the subject rigorous in two dimensions, followed by the development of computer algorithms that can test over a million sites in seconds and find the rigid regions, and the associated pivots, leading to many applications. This workshop was organized to bring together leading researchers studying the underlying theory, and to explore the various areas of science where applications of these ideas are being implemented.







Microelectrodes: Theory and Applications


Book Description

The importance of microelectrodes is widely recognised and interest in their application in diverse areas of research has been increasing over the past ten years. In fact, several meetings organized by the International Society of Electrochemistry, The American Chemical Society and The U. S. Electrochemical Society have analysed various aspects of their theory and applications. For this reason it seemed that the time had arrived when scientists from around the world, actively concerned with research in the area of microelectrodes, should meet, exchange ideas and assess the direction of future developments. Furthermore, it seemed appropriate that this meeting should be held as a NATO Advanced Study Institute, so that students and young scientists with research interests in microelectrodes would have the opportunity to interact with experts in the field, establish future collaboration and, hopefully, catalyse new developments in the area. The meeting was held in Alvor, Portugal, in May 1990. This book compiles the lectures delivered in the Institute. It reviews the most important aspects of microelectrodes and points out directions for future research in this field. Several contributions discuss recent developments in theoretical aspects such as the properties of various geometries and computational procedures for solving the equations describing the coupling of mass transport to microelectrodes with heterogeneous electron tranfer and homogeneous chemistry. The materials and methods available for microelectrodes manufacture are presented in some detail. Both steady state and transient techniques are covered and the interaction of theory with experiment is discussed.




An Introduction to Theory and Applications of Quantum Mechanics


Book Description

Based on a Cal Tech introductory course for advanced undergraduates in applied physics, this text explores a wide range of topics culminating in semiconductor transistors and lasers. 1982 edition.







Theory and Application of Quantum-Based Interatomic Potentials in Metals and Alloys


Book Description

Atomistic computer simulations are often at the heart of modern attempts to predict and understand the physical properties of real materials, including the vast domain of metals and alloys. Historically, highly simplified empirical potentials have been used to provide the interatomic forces needed to perform such simulations, but true predictive power in these materials emanates from fundamental quantum mechanics. In metals and alloys especially, a viable path forward to the vastly larger length and time scales offered by empirical potentials, while retaining the predictive power of quantum mechanics, is to course-grain the underlying electronic structure of the material and systematically derive quantum-based interatomic potentials from first-principles. This book spans the entire process from foundation in fundamental theory, to the development of accurate quantum-based potentials for real materials, to the wide-spread application of the potentials to the atomistic simulation of structural, thermodynamic, defect and mechanical properties of metals and alloys.




A Review: Chill-Block Melt Spin Technique, Theories & Applications


Book Description

Rapid Solidification Processing of molten metals and alloys has proved to be a reliable route for producing new and advanced materials. The Chill-Block Melt Spin (CBMS) technique is important because its simplicity, flexibility and perfection. High quality materials can be produced with lower costs, as compared to other routes, by refining the microstructure and trapping the nucleated (new) metastable phases. Melt-spun ribbons subsequently produced can then be consolidated to produce billets and sheets that can be used in many industries especially high-tech industries such as aerospace and racing automobiles. This book contains several perspectives about CBMS technology and should be a useful review for undergraduate and post-graduate metallurgy students.




Ionic Soft Matter: Modern Trends in Theory and Applications


Book Description

Recently there have been profound developments in the understanding and interpretation of liquids and soft matter centered on constituents with sho- range interactions. Ionic soft matter is a class of conventional condensed soft matter with prevailing contribution from electrostatics and, therefore, can be subject to possible long-range correlations among the components of the - terial and in many cases crucially affecting its physical properties. Among the most popular representatives of such a class of materials are natural and synthetic saline environments, like aqueous and non-aqueous electrolyte - lutions and molten salts as well as variety of polyelectrolytes and colloidal suspensions. Equally well known are biological systems of proteins. All these systems are examples of soft matter strongly in?uenced, if not dominated, by long-range forces. For more than half of century the classical theories by Debye and Hückel as well as by Derjaguin, Landau, Verwey and Owerbeek (DLVO) have been at the basis of theoretical physical chemistry and chemical engineering. The substantial progress in material science during last few decades as well as the advent of new instrumentation and computational techniques made it apparent that in many cases the classical theories break down. New types of interactions (e.g. hydrodynamic, entropic) have been discovered and a number of questions have arisen from theoretical and experimental studies. Many of these questions still do not have de?nite answers.