Download or read book First Principles Study of Structural Electronic and Mechanical Properties of Lead Selenide and Lead Telluride written by John E. Petersen (III.) and published by . This book was released on 2013 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lead chalcogenides, most notably lead selenide (PbSe) and lead telluride (PbTe), have become an active area of research due to their thermoelectric properties. The high figure of merit (zT) of these materials has brought much attention to them, due to their ability to convert waste heat into electricity. Recent efforts, such as applying pressure or doping, have shown an increase in thermoelectric efficiency. Variation in application and synthesis conditions gives rise to a need for analysis of structural, electronic, and mechanical properties of these materials at different pressures. In addition to the NaCl structure at ambient conditions, lead chalcogenides have a dynamic orthorhombic (Pnma) intermediate pressure phase and a higher pressure, yet stable, CsCl phase. By altering the lattice constant, the application of external pressure is simulated; this has notable effects on total ground-state energy, band gap, and structural phase. Using the Projector Augmented Wave (PAW) Method and the Generalized Gradient Approximation (GGA) in Density Functional Theory (DFT), the phase transition pressures are calculated by finding the differences in enthalpy from total energy calculations. For each phase, elastic constants, bulk modulus, shear modulus, and Young's modulus are calculated, and the NaCl phase is studied with typical dopants, both n-type (Bi, In, and I) and p-type (Na and Tl). Pugh's ratio is employed to give insight on the brittleness of the materials and phases studied. In addition to structural and mechanical properties, the band structure and density of states are analyzed at varying pressures, paying special note to thermoelectric implications. The results presented here will be useful to guide future experiments toward the search for structurally stable thermoelectric materials. Several mechanical properties predicted here are ready to be confirmed by experimental works.
Download or read book Thermoelectrics written by HoSung Lee and published by John Wiley & Sons. This book was released on 2016-09-07 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoelectrics: Design and Materials HoSung Lee, Western Michigan University, USA A comprehensive guide to the basic principles of thermoelectrics Thermoelectrics plays an important role in energy conversion and electronic temperature control. The book comprehensively covers the basic physical principles of thermoelectrics as well as recent developments and design strategies of materials and devices. The book is divided into two sections: the first section is concerned with design and begins with an introduction to the fast developing and multidisciplinary field of thermoelectrics. This section also covers thermoelectric generators and coolers (refrigerators) before examining optimal design with dimensional analysis. A number of applications are considered, including solar thermoelectric generators, thermoelectric air conditioners and refrigerators, thermoelectric coolers for electronic devices, thermoelectric compact heat exchangers, and biomedical thermoelectric energy harvesting systems. The second section focuses on materials, and covers the physics of electrons and phonons, theoretical modeling of thermoelectric transport properties, thermoelectric materials, and nanostructures. Key features: Provides an introduction to a fast developing and interdisciplinary field. Includes detailed, fundamental theories. Offers a platform for advanced study. Thermoelectrics: Design and Materials is a comprehensive reference ideal for engineering students, as well as researchers and practitioners working in thermodynamics. Cover designed by Yujin Lee
Download or read book Sulfide Mineralogy and Geochemistry written by David J. Vaughan and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 61 of Reviews in Mineralogy and Geochemistry presents an up-to-date review of sulfide mineralogy and geochemistry. The crystal structures, electrical and magnetic properties, spectroscopic studies, chemical bonding, thermochemistry, phase relations, solution chemistry, surface structure and chemistry, hydrothermal precipitation processes, sulfur isotope geochemistry and geobiology of metal sulfides are reviewed. Where it is appropriate for comparison, there is brief discussion of the selenide or telluride analogs of the metal sulfides. When discussing crystal structures and structural relationships, the sulfosalt minerals as well as the sulfides are considered in some detail.
Download or read book Thermal Design written by HoSung Lee and published by John Wiley & Sons. This book was released on 2022-06-01 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal Design Discover a new window to thermal engineering and thermodynamics through the study of thermal design Thermal engineering is a specialized sub-discipline of mechanical engineering that focuses on the movement and transfer of heat energy between two mediums or altered into other forms of energy. Thermal engineers must have a strong knowledge of thermodynamics and the processes that convert generated energy from thermal sources into chemical, mechanical, or electrical energy — as such, thermal engineers can be employed in many industries, particularly in automotive manufacturing, commercial construction, and the HVAC industry. As part of their job, thermal engineers often have to improve a current system to make it more efficient, and so must be aware of a wide array of variables and familiar with a broad sweep of systems to ensure the work they do is economically viable. In this significantly updated new edition, Thermal Design details the physical mechanisms of standard thermal devices while integrating essential formulas and detailed derivations to give a practical understanding of the field to students. The textbook examines the design of thermal devices through mathematical modeling, graphical optimization, and occasionally computational-fluid-dynamic (CFD) simulation. Moreover, it presents information on significant thermal devices such as heat sinks, thermoelectric generators and coolers, heat pipes, and heat exchangers as design components in larger systems — all of which are increasingly important and fundamental to numerous fields such as microelectronic cooling, green or thermal energy conversion, and thermal control and management in space. Readers of the Second Edition of Thermal Design will also find: A new chapter on thermoelectrics that reflects the latest modern technology that has recently been developed More problems and examples to help clarify points throughout the book A range of appendices, including new additions, that include more specifics on topicscovered in the book, tutorials for applications, and computational work A solutions manual provided on a companion website Thermal Design is a useful reference for engineers and researchers in me chanical engineering, as well as senior undergraduate and graduate students in mechanical engineering.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bringing Thermoelectricity into Reality written by Patricia Aranguren and published by BoD – Books on Demand. This book was released on 2018-07-11 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The disproportionate use of fossil fuels has turned into a serious environmental issue. Thus, we are encountering one of the biggest challenges of the twenty-first century, satisfying the energy demand with respect to the environment. Thermoelectricity is an emerging technology, which contributes to reducing the impact of the use of traditional technologies, harvesting the waste heat, and eliminating the use of refrigerants. The book Bringing Thermoelectricity into Reality covers the current thermoelectric investigations: the study of novel thermoelectric materials, the development of computational models, the design of proper assemblies, and the optimization of thermal designs, as well as novel thermoelectric generators, coolers, and heating applications. This book looks for the definitive thermoelectric applications applied to everyday life.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electronic Structure and Optical Properties of Semiconductors written by Marvin L. Cohen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Thermoelectricity written by H. Julian Goldsmid and published by Springer Science & Business Media. This book was released on 2009-10-03 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Thermoelectricity is the latest work by Professor Julian Goldsmid drawing on his 55 years experience in the field. The theory of the thermoelectric and related phenomena is presented in sufficient detail to enable researchers to understand their observations and develop improved thermoelectric materials. The methods for the selection of materials and their improvement are discussed. Thermoelectric materials for use in refrigeration and electrical generation are reviewed. Experimental techniques for the measurement of properties and for the production of thermoelements are described. Special emphasis is placed on nanotechnology which promises to yield great improvements in the efficiency of thermoelectric devices. Chapters are also devoted to transverse thermoelectric effects and thermionic energy conversion, both techniques offering the promise of important applications in the future.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1968-11 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book System Materials Nanoarchitectonics written by Yutaka Wakayama and published by Springer Nature. This book was released on 2022-01-03 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first publication to widely introduce the contributions of nanoarchitectonics to the development of functional materials and systems. The book opens up pathways to novel nanotechnology based on bottom-up techniques. In fields of nanotechnology, theoretical and practical limitations are expected in the bottom-up nanofabrication process. Instead, some supramolecular processes for nano- and microstructure formation including molecular recognition, self-assembly, and template synthesis have gained great attention as novel key technologies to break through expected limitations in current nanotechnology. This volume describes future images of nanotechnology and related materials and device science as well as practical applications for energy and biotechnology. Readers including specialists, non-specialists, graduate students, and undergraduate students can focus on the parts of the book that interest and concern them most. Target fields include materials chemistry, organic chemistry, physical chemistry, nanotechnology, and even biotechnology.
Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1968 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Abstracts written by American Ceramic Society and published by . This book was released on 1995 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Properties of Materials written by Robert E. Newnham and published by Oxford University Press. This book was released on 2005 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crystals are sometimes called 'Flowers of the Mineral Kingdom'. In addition to their great beauty, crystals and other textured materials are enormously useful in electronics, optics, acoustics and many other engineering applications. This richly illustrated text describes the underlying principles of crystal physics and chemistry, covering a wide range of topics and illustrating numerous applications in many fields of engineering using the most important materials today. Tensors, matrices, symmetry and structure-property relationships form the main subjects of the book. While tensors and matrices provide the mathematical framework for understanding anisotropy, on which the physical and chemical properties of crystals and textured materials often depend, atomistic arguments are also needed to quantify the property coefficients in various directions. The atomistic arguments are partly based on symmetry and partly on the basic physics and chemistry of materials. After introducing the point groups appropriate for single crystals, textured materials and ordered magnetic structures, the directional properties of many different materials are described: linear and nonlinear elasticity, piezoelectricity and electrostriction, magnetic phenomena, diffusion and other transport properties, and both primary and secondary ferroic behavior. With crystal optics (its roots in classical mineralogy) having become an important component of the information age, nonlinear optics is described along with the piexo-optics, magneto-optics, and analogous linear and nonlinear acoustic wave phenomena. Enantiomorphism, optical activity, and chemical anisotropy are discussed in the final chapters of the book.
Download or read book Solid State Properties written by Mildred Dresselhaus and published by Springer. This book was released on 2018-01-17 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book fills a gap between many of the basic solid state physics and materials sciencebooks that are currently available. It is written for a mixed audience of electricalengineering and applied physics students who have some knowledge of elementaryundergraduate quantum mechanics and statistical mechanics. This book, based on asuccessful course taught at MIT, is divided pedagogically into three parts: (I) ElectronicStructure, (II) Transport Properties, and (III) Optical Properties. Each topic is explainedin the context of bulk materials and then extended to low-dimensional materials whereapplicable. Problem sets review the content of each chapter to help students to understandthe material described in each of the chapters more deeply and to prepare them to masterthe next chapters.
