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Books > Professional & Technical > Mechanical engineering & materials > Materials science > General
This widely-acclaimed serial contains authoritative reviews that
address all aspects of organometallic chemistry, a field which has
expanded enormously since the publication of Volume 1 in 1964.
Almost all branches of chemistry and material science now interface
with organometallic chemistry--the study of compounds containing
carbon-metal bonds. Organometallic compounds range from species
which are so reactive that they only have a transient existence at
ambienttemperatures to species which are thermally very stable.
Organometallics are used extensively in the synthesis of useful
compounds on both large and small scales. Industrial processes
involving plastics, polymers, electronic materials, and
pharmaceuticals all depend on advancements in organometallic
chemistry.
This thesis examines a novel class of flexible electronic material with great potential for use in the construction of stretchable amplifiers and memory elements. Most remarkably the composite material produces spontaneous oscillations that increase in frequency when pressure is applied to it. In this way, the material mimics the excitatory response of pressure-sensing neurons in the human skin. The composites, formed of silicone and graphitic nanoparticles, were prepared in several allotropic forms and functionalized with naphthalene diimide molecules. A systematic study is presented of the negative differential resistance (NDR) region of the current-voltage curves, which is responsible for the material's active properties. This study was conducted as a function of temperature, graphite filling fraction, scaling to reveal the break-up of the samples into electric field domains at the onset of the NDR region, and an electric-field induced metal-insulator transition in graphite nanoparticles. The effect of molecular functionalization on the miscibility threshold and the current-voltage curves is demonstrated. Room-temperature and low-temperature measurements were performed on these composite films under strains using a remote-controlled, custom-made step motor bench.
This updated volume is intended as a reference text on the technology of hot and cold isostatic pressing together with applications for development of new materials.
This volume of proceedings contains the papers from the third in a successful series of conferences organized by the Deutscher Verband fur Materialforschung undprufung DVM]. The purpose of the conference was to review methods of improving the performance of materials and structures and to extend working life, especially under complex loading conditions such as environmental attack and high temperature degradation as well as providing a comprehensive evaluation of recent progress in low cycle fatigue and elasto-plastic behaviour of materials. Safe design and effective operation of highly stressed structures rely on the extensive use of mechanical approaches and micromechanics analysis to predict the deformation and fracture response of materials in service. Because of the need to create greater confidence in the engineering world in advanced materials as efficient replacements for conventional materials, many of the papers emphasize the role of new materials and emerging technology.
The concept to utilize an ion-conducting polymer membrane as a solid po- mer electrolyte offers several advantages regarding the design and operation of an electrochemical cell, as outlined in Volume 215, Chapter 1 (L. Gubler, G.G. Scherer). Essentially, the solvent and/or transport medium, e.g., H O, 2 + for the mobile ionic species, e.g., H for a cation exchange membrane, is taken up by and con?ned into the nano-dimensional morphology of the i- containingdomainsofthepolymer.Asaconsequence, aphaseseparationinto a hydrophilic ion-containing solvent phase and a hydrophobic polymer ba- bone phase establishes. Because of the narrow solid electrolyte gap in these cells, low ohmic losses reducing the overall cell voltage can be achieved, even at highcurrent densities. This concept was applied to fuel cell technology at a very early stage; h- ever, performance and reliability of the cells were low due to the dissatisfying membrane properties at that time. The development of per?uoro sulfonate and carboxylate-type membranes, in particular for the chlor-alkali process, directly fostered the further development of proton-conducting membranes and, as a consequence, also the progress in this type of fuel cell technology (polymer electrolyte fuel cell, PEFC)
CONTENTS - PART I. ATOMS, MOLECULES AND CHEMICAL BONDING - I. Atom: Wave Nature and Configuration - II. Electron Clouds, Covalent and Ionic Radii - III. Molecular Orbitals - IV. Valence Bond Theory of Chemical Bonding - V. Hybridization - VI. Chemical Bonding and its Molecular Orbital Theory - VII. Coupling of Angular Momenta and Magnetic Moments - VIII. Transitional Elements - IX. Complexes, Ligands and Molecular Orbital Field Theory - PART II. NON-TRANSITIONAL ELEMENTS - X. Inert Gases of the Zero Group - Rare Elements of the Alkali Group - XI. Lithium - XII. Rubidium, Caesium and Francium - Rare Elements of the Alkaline Earth Group - XIII. Beryllium - XIV. Radium and Radon - Rare Elements of Boron-Aluminium Group - XV. Gallium - XVI. Indium - XVII. Thallium - Rare Elements of Carbon Group - XVIII. Germanium - Rare Elements of Oxygen-Sulphur Group - XIX. Selenium - XX. Tellurium and Polonium - XXI. Element 85, Alabamine or Astatine of Halogen Group - PART III. TRANSITIONAL ELEMENTS - XXII. Scandium - XXIII. Lathanide Series or Rare Earths - Rare Elements of the Titanium Sub-Group - XXIV. Titanium - XXV. Zirconium - XXVI. Hafnium - XXVII. Thorium - Rare Elements of the Vanadium Sub-Group - XXVIII. Vanadium - XXIX. Columbium or Niobium - XXX. Tantalum - Rare Elements of the Chromium Sub-Group - XXXI. Molybdenum - XXXII. Tungsten or Wolfram - XXXIII. Uranium - Rare Elements of the Manganese Sub-Group - XXXIV. Rhenium and Technetium - Platinum Metals - XXXV. Ruthenium - XXXVI. Rhodium - XXXVII. Palladium - XXX VIII. Osmium - XXXIX. Iridium - XL. Platinum - XLI. Actinium and Protoactinium - XLII. Trans-Uranium Elements - Rare Earth Homologues in the Actinide Series - Index -
Mechanochemistry as a branch of solid state chemistry enquires into processes which proceed in solids due to the application of mechanical energy. This provides a thorough, up to date overview of mechanochemistry of solids and minerals. Applications of mechanochemistry in nanoscience with special impact on nanogeoscience are described. Selected advanced identification methods, most frequently applied in nanoscience, are described as well as the advantage of mechanochemical approach in minerals engineering. Examples of industrial applications are given. Mechanochemical technology is being applied in many industrial fields: powder metallurgy (synthesis of nanometals, alloys and nanocompounds), building industry (activation of cements), chemical industry (solid waste treatment, catalyst synthesis, coal ashes utilization), minerals engineering (ore enrichment, enhancement of processes of extractive metallurgy), agriculture industry (solubility increase of fertilizers), and pharmaceutical industry (improvement of solubility and bioavailability of drugs). This reference serves as an introduction to newcomers to mechanochemistry, and encourages more experienced researchers to broaden their knowledge and discover novel applications in the field.
The information revolution of the twentieth century was brought about by microelectronics based on a simple and common material, silicon. Although silicon will continue to be of central importance in the next century, carbon, silicon's upstairs neighbor in the periodic table, will also be of great impor tance in future technology. Carbon has more flexible bonding and hence has various unique physical, chemical and biological properties. It has two types of bonding, sp3 and sp2, in diamond and graphite, respectively. The existence of the latter, "7r-electron bonding," is responsible for carbon's versatile tal ents. Those materials having extended 7r-electron clouds are called '7r-electron materials'. They include graphite, carbon nanotubes, fullerenes and various carbonaceous materials. They may be called "supercarbon" because of their fabulous multiformity and versatile properties. This volume is a status report on the synthesis, properties and appli cations of 7r-electron materials, representing an updated proceedings of the International Workshop on 7r-Electron Materials held at the Northwestern University, 'Evanston, Illinois, USA, August 13-14,1996. The Workshop was organized jointly by the Japan Science and Technology Corporation (JST) and the Materials Research Center at the Northwestern University (NWU) in order to provide an opportunity for scientists and engineers to meet and dis cuss the latest advances in this field and in commemoration of the Yoshimura 7r-Electron Materials Project, one of Japan's national projects in the JST's ERATO (Exploratory Research for Advanced Technology) program."
The two volumes "New Developments in Polymer Analytics" deal with recent progress in the characterization of polymers, mostly in solution but also at sur faces. Despite the fact that almost all of the described techniques are getting on in years, the contributions are expected to meet the readers interest because either the methods are newly applied to polymers or the instrumentation has achieved a major breakthrough leading to an enhanced utilization by polymer scientists. The first volume concentrates on separation techniques. H. Pasch summarizes the recent successes of multi dimensional chromatography in the characteriza tion of copolymers. Both, chain length distribution and the compositional het erogeneity of copolymers are accessible. Capillary electrophoresis is widely and successfully utilized for the characterization of biopolymers, particular of DNA . It is only recently that the technique has been applied to the characterization of water soluble synthetic macromolecules. This contribution of Grosche and Engelhardt focuses on the analysis of polyelectrolytes by capillary electophore sis. The last contribution of the first volume by Coelfen and Antonietti summa rizes the achievements and pitfalls of field flow fractionation techniques .The major drawbacks in the instrumentation have been overcome in recent years and the "triple F techniques" are currently advancing to a powerful competitor to size exclusion chromatography.
Developed from the author's course on advanced mechanics of composite materials, Finite Element Analysis of Composite Materials with Abaqus (R) shows how powerful finite element tools tackle practical problems in the structural analysis of composites. This Second Edition includes two new chapters on "Fatigue" and "Abaqus Programmable Features" as well as a major update of chapter 10 "Delaminations" and significant updates throughout the remaining chapters. Furthermore, it updates all examples, sample code, and problems to Abaqus 2020. Unlike other texts, this one takes theory to a hands-on level by actually solving problems. It explains the concepts involved in the detailed analysis of composites, the mechanics needed to translate those concepts into a mathematical representation of the physical reality, and the solution of the resulting boundary value problems using Abaqus. The reader can follow a process to recreate every example using Abaqus graphical user interface (CAE) by following step-by-step directions in the form of pseudo-code or watching the solutions on YouTube. The first seven chapters provide material ideal for a one-semester course. Along with offering an introduction to finite element analysis for readers without prior knowledge of the finite element method (FEM), these chapters cover the elasticity and strength of laminates, buckling analysis, free edge stresses, computational micromechanics, and viscoelastic models for composites. Emphasizing hereditary phenomena, the book goes on to discuss continuum and discrete damage mechanics as well as delaminations and fatigue. The text also shows readers how to extend the capabilities of Abaqus via "user subroutines" and Python scripting. Aimed at advanced students and professional engineers, this textbook features 62 fully developed examples interspersed with the theory, 82 end-of-chapter exercises, and 50+ separate pieces of Abaqus pseudo-code that illustrate the solution of example problems. The author's website offers the relevant Abaqus and MATLAB model files available for download, enabling readers to easily reproduce the examples and complete the exercises. Video recording of solutions to examples are available on YouTube with multilingual captions.
This volume contains papers presented at the NATO Advanced Research Workshop (ARW) Dynamic Interactions in Quantum Dot Systems held at Hotel Atrium in Puszczykowo, near Poznan, Poland, May 16-19,2002. The term low-dimensional systems, which is used in the title of this volume, refers to those systems which contain at least one dimension that is intermediate between those characteristic ofatoms/molecules and those ofthe bulk material. Depending on how many dimensions lay within this range, we generally speak of quantum wells, quantum wires, and quantum dots. As such an intermediate state, some properties of low-dimensional systems are very different to those of their molecular and bulk counterparts. These properties generally include optical, electronic, and magnetic properties, and all these are partially covered in this book. The main goal of the workshop was to discuss the actual state of the art in the broad area ofnanotechnology. The initial focus was on the innovative synthesis of nanomaterials and their properties such as: quantum size effects, superparamagnetism, or field emission. These topics lead us into the various field based interactions including plasmon- magnetic spin- and exciton coupling. The newer, more sophisticated methods for characterization of nanomaterials were discussed, as well as the methods for possible industrial applications. In general, chemists and physicists, as well as experts on both theory and experiments on nanosized regime structures were brought together, to discuss the general phenomena underlying their fields ofinterest from different points ofview.
This volume brings the reader up to date on transport phenomena, including electrical and thermal conductivity and infrared properties. In addition, electron tunneling and the characteristics and applications of films are discussed; the preparation of the necessary samples has proceeded, and a sizeable body of reproducible data has become available. Pressure effects are also presented; considerable progress has been made in relating them to the crystallographic and electronic structure of high temperature superconductors. The preparation and characterization of bulk samples is also reviewed.
Measuring the long-term durability of new types of concrete and
concrete technologies is crucial to their acceptance in the
marketplace. This long-needed handbook of analytical techniques
provides a complete reference to the cutting-edge procedures used
to test today's innovative materials.
"This book contains overviews on technologically important classes of glasses, their treatment to achieve desired properties, theoretical approaches for the description of structure-property relationships, and new concepts in the theoretical treatment of crystallization in glass-forming systems. It contains overviews about the state of the art and about specific features for the analysis and application of important classes of glass-forming systems, and describes new developments in theoretical interpretation by well-known glass scientists. Thus, the book offers comprehensive and abundant information that is difficult to come by or has not yet been made public." Edgar Dutra Zanotto (Center for Research, Technology and Education in Vitreous Materials, Brazil) Glass, written by a team of renowned researchers and experienced book authors in the field, presents general features of glasses and glass transitions. Different classes of glassforming systems, such as silicate glasses, metallic glasses, and polymers, are exemplified. In addition, the wide field of phase formation processes and their effect on glasses and their properties is studied both from a theoretical and experimental point of view.
Computational Materials Design consists of ten chapters outlining a wide range of materials design technologies from first-principle calculations to continuum mechanics, with successful applications to materials design and development. Each theory is explained from the point of view of a relevant technology. Thus the reader can understand the outline of each theory and the effectiveness of computational approaches in terms of materials phenomena as well as materials design and development.
Most descriptions of polymers start at room temperature and end at the melting point. This textbook starts at very low temperatures and ends at room temperature. At low temperatures, may processes and relaxations are frozen which allows singular processes or separate relaxations to be studied. At room temperatures, or at the main glass transitions, many processes overlap and the properties are determined by relaxations. At low temperatures, there are temperature ranges with negligible influences by glass transitions. They can be used for investigating so-called basic properties which arise from principles of solid state physics. The chain structure of polymers, however, requires stringent modifications for establishing solid state physics of polymers. Several processes which are specific of polymers, occur only at low temperatures. There are also technological aspects for considering polymers at low temperatures. More and more applications of polymeric materials in low temperature technology appear. Some examples are thermal and electrical insulations, support elements for cryogenic devices, low-loss materials for high frequency equipments. It is hoped that, in addition to the scientific part, a data collection in the appendix may help to apply polymers more intensively in low temperature technology. The author greatly appreciates the contributions by his coworkers of the Kernforschungszentrum Karlsruhe in measurement and discussion of many data presented in the textbook and its appendix. Fruitful disccussions with the colleagues Prof. H. Baur, Prof. S. Hunklinger, Prof. D. Munz and Prof. R."
Proceedings of the First European Federation of Corrosion Workshop on Microbial Corrosion held in Sintra, Portugal, 7-9 March 1988
Applications of nanoparticles to the human life and tools in diagnosis and therapy in field of clinical medicine holds importance and has been an prime focus of biomedical and clinical research for quite sometime, though their application in veterinary medicine is a relatively new focus area of research. Prior to human applications, studies are initially conducted on animals models. Thus toxicity based studies and study of impact of nanoparticles on animal immune system finds importance. In the second volume of the book we discuss the immune system in animals across invertebrates and vertebrate phylas and discuss the impact of nanoparticles in animals life, health, survival and immune system. The book highlights the toxic effects of nanoparticles as environmental pollutants and their adverse impact on animal life forms. Both volumes are also included in a set ISBN 978-3-11-065666-4.
The 2016 International Conference on Energy, Environment and Materials Science (EEMS 2016) took place on July 29-31, 2016 in Singapore. EEMS 2016 has been a meeting place for innovative academics and industrial experts in the field of energy and environment research. The primary goal of the conference is to promote research and developmental activities in energy and environment research and further to promote scientific information exchange between researchers, developers, engineers, students, and practitioners working all around the world. The conference will be organized every year making it an ideal platform for people to share views and experiences in energy, environment and materials science and related areas.
A wide range of advanced materials are prepared by cryogenic processing methods (also called freeze-drying synthesis). This book focuses on the cryochemical technology of advanced inorganic materials, which has been the subject of the authors' research for many years. This book is the first in the 30-year history of this technology completely devoted to the processes and application of cryochemical synthesis. The authors also draw special attention to the fundamental aspects of cryochemical processes and their physcio-chemical background. Considerably more research has been performed on this subject in the USSR than anywhere else and this book also contains a large volume of previously unpublished scientific material. Cryochemical Technology of Advanced Materials will be of interest to materials scientists and chemical engineers, especially those working on catalysis, adsorbents, coatings powder metallurgy, semiconductors, ceramics and organic synthesis.
This book shows how the use of biodegradable plastics in agriculture can have a profound positive impact on plasticulture. Starting with an organic chemistry approach to biodegradable and compostable plastics, both natural and synthetic, it then analyzes the technological and agronomic aspects of existing bioplastics for protected cultivation (mulching, direct cover, low tunnels). It describes the new sprayable biodegradable mulching method, which is based on the use of waterborne polysaccharides and cellulosic fibers. A further chapter describes the research and technology of biodegradable plastics for different agricultural practices. It also includes chapters on life cycle assessment (LCA) of biodegradable plastics for agriculture, and existing and developing standards in the field. It is a valuable resource for agronomists, chemical and materials engineers, polymer technologists and scientists, as well as for a more general readership interested in the application of green chemistry principles to the vast world of crop production. Mario Malinconico< is Research Director at the Institute of Polymers, Composites and Biomaterials, National Research Council, Italy.
Little do we reliably know about the Mott transition, and we are far from a complete understanding of the metal --insulator transition due to electr- electron interactions. Mott summarized his basic ideas on the subject in his wonderful book Metal--Insulator nansitions that first appeared in 1974 11. 1). In his view, a Motk insulator displays a gap for charge-carrying excitations due to electron cowelations, whose importance is expressed by the presence of local magnetic moments regardless of whether or not they are ordered. Since the subject is far from being settled, different opinions on specific aspects of the Mott transition still persist. This book naturally embodies my own understanding of the phenomenon, inspired by the work of the late Sir Kevill Mott. The purpose of this book is twofold: first, to give a detailed presen- tion of the basic theoretical concopts for Mott insulators and, second, to test these ideas against the results from model calculations. For this purpose the Hubbard model and some of its derivatives are best suited. The Hubbard model describes a Mott transition with a mere minimum of tunable par- eters, and various exact statements and even exact solutions exist in certain limiting cases. Exact solutions not only allow us to test our basic ideas, but also help to assess the quality of approxin ate theories for correlated electron systems. |
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