Download or read book Thermal Conductivity Measurement Design for Thin Film Materials written by Karin Giesecke and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Conductivity Measurements in Atomically Thin Materials and Devices written by T. Serkan Kasirga and published by Springer Nature. This book was released on 2020-05-19 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book assesses the thermal feasibility of using materials with atomically thin layers such as graphene and the transition metal dichalcogenides family in electronics and optoelectronics applications. The focus is on thermal conductivity measurement techniques currently available for the investigation of thermal performance at the material and device level. In addition to providing detailed information on the available techniques, the book introduces readers to novel techniques based on photothermal effects.
Download or read book Construction of a Thermal Conductivity Measurement Platform for Bulk and Thin Film Materials Based on the 3 Omega Technique written by Abbas Jaber and published by . This book was released on 2014 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials show signicant enhancement in the thermoelectric g-ure of merit (zT) due to quantum connement eects. Improving the eciency ofthermoelectric devices allows for the development of better, more economical wasteheat recovery systems. Such systems may be used as bottoming or co-generationcycles in conjunction with conventional power cycles to recover some of the wastedheat. Thermal conductivity measurement systems are an important part of the char-acterization processes of thermoelectric materials. These systems must possess thecapability of accurately measuring the thermal conductivity of both bulk and thin-lmsamples at dierent ambient temperatures. This paper discusses the construction, validation, and improvement of a thermalconductivity measurement platform based on the 3-Omega technique. Room temperaturemeasurements of thermal conductivity done on control samples with known propertiessuch as undoped bulk silicon (Si), bulk gallium arsenide (GaAs), and silicon dioxide(SiO2) thin lms yielded 150 W=m - K, 50 W=m - K, and 1:46 W=m - K respectively. These quantities were all within 8% of literature values. In addition, the thermalconductivity of bulk SiO2 was measured as a function of temperature in a Helium-4 cryostat from 75K to 250K. The results showed good agreement with literaturevalues that all fell within the error range of each measurement. The uncertainty inthe measurements ranged from 19% at 75K to 30% at 250K. Finally, the systemwas used to measure the room temperature thermal conductivity of a nanocompositecomposed of cadmium selenide, CdSe, nanocrystals in an indium selenide, In2Se3,matrix as a function of the concentration of In2Se3. The observed trend was inqualitative agreement with the expected behavior.i.
Download or read book MEMS A Practical Guide of Design Analysis and Applications written by Jan Korvink and published by Springer Science & Business Media. This book was released on 2010-05-28 with total page 981 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new generation of MEMS books has emerged with this cohesive guide on the design and analysis of micro-electro-mechanical systems (MEMS). Leading experts contribute to its eighteen chapters that encompass a wide range of innovative and varied applications. This publication goes beyond fabrication techniques covered by earlier books and fills a void created by a lack of industry standards. Subjects such as transducer operations and free-space microsystems are contained in its chapters. Satisfying a demand for literature on analysis and design of microsystems the book deals with a broad array of industrial applications. This will interest engineering and research scientists in industry and academia.
Download or read book Thermal Conductivity written by Terry M. Tritt and published by Springer Science & Business Media. This book was released on 2006-10-03 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been almost thirty years since the publication of a book that is entirely dedicated to the theory, description, characterization and measurement of the thermal conductivity of solids. The recent discovery of new materials which possess more complex crystal structures and thus more complicated phonon scattering mechanisms have brought innovative challenges to the theory and experimental understanding of these new materials. With the development of new and novel solid materials and new measurement techniques, this book will serve as a current and extensive resource to the next generation researchers in the field of thermal conductivity. This book is a valuable resource for research groups and special topics courses (8-10 students), for 1st or 2nd year graduate level courses in Thermal Properties of Solids, special topics courses in Thermal Conductivity, Superconductors and Magnetic Materials, and to researchers in Thermoelectrics, Thermal Barrier Materials and Solid State Physics.
Download or read book Thermal Conductivity Measurements of Bulk Materials and Thin Films by the 3 omega Method written by Romy Liske and published by . This book was released on 2005 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of the Thermal Conductivity of Dielectric Thin Films Through Experimental Measurement and Crystallographic Analysis written by Max S. Aubain and published by . This book was released on 2013 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prediction and measurement of the thermal conductivity, k, of crystalline materials, particularly in those with nano-scaled structural features, continues to pose a challenge to the heat transfer community. One difficulty arises in the correlation of experimental data with the theoretically calculated, direction-specific phonon dispersion characteristics that determine thermal conductivity, such as heat capacity and group velocity. k is often considered a scalar quantity, which implicitly assumes three-dimensional isotropic behavior, e.g., k of wurtzite (hexagonal) aluminum nitride at room temperature is considered to be 320 W/m.K. Although, simultaneously, it is acknowledged that the phonon transport characteristics within crystalline materials varies non-negligibly with direction; we calculate the a-axis and c-axis heat capacity and group velocity at room temperature to be different by approximately a factor of 10 and 2.5, respectively, favoring basal-plane heat conduction. Experimental measurements may elucidate these phenomena, but fabrication of large single crystals in multiple orientations is impractical for most materials, and in those samples which are commonly single crystal, such as thin films, nanowires, or nanodots, it is difficult to measure the full thermal conductivity tensor. This dissertation then develops two experimental techniques to measure k anisotropy of two substrate-supported thin film systems. An optical technique called thermoreflectance thermometry was utilized to measure the heat transport that takes place only within the plane of Si films, ranging in thickness from 70 nm to 255 nm, atop thermally insulating substrates. The use of an optical method was deployed to preclude possible heat losses from contacted thermometer structures and enabled temperature measurements with sub-miliKelvin resolution, with 4 um spatial resolution. Additionally, heater/thermometer structures, in a 3w measurement configuration, were used to simultaneously probe the cross-plane and in-plane heat transport characteristics of aluminum nitride thin films, between 500 nm and 750 nm thick, deposited by molecular beam epitaxy on sapphire substrates. Finite element models were applied to fit the measured data, using the thin film thermal conductivity as a free parameter. Finally, the results are discussed with respect to calculations of the heat capacity and group velocity based on phonon dispersion relations, and scattering mechanisms specific to the thin film samples.
Download or read book Thin Film and Flexible Thermoelectric Generators Devices and Sensors written by Sergey Skipidarov and published by Springer Nature. This book was released on 2021-03-13 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents and facilitates new research and development results with hot topics in the thermoelectric generators (TEGs) field. Topics include: novel thin film; multilayer, composite and nanostructured thermoelectric materials; simulation of phenomena related to thermoelectricity; thermoelectric thin film and multilayer materials manufacturing technologies; measurement techniques for characterization; thermoelectric generators; and the simulation, modeling, design, thermal, and mechanical degradation problems. This book helps researchers tackle the challenges that still remain in creating cheap and effective TEGs and presents the latest trends and technologies in development and production of advanced thermoelectric generation devices.
Download or read book Thin Film Technology Handbook written by Aicha Elshabini and published by McGraw Hill Professional. This book was released on 1998 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive source available on the preparation, characterization, and emerging applications of thin film. This book features extensive new advances applied in multichip modules (MCMs), and covers the basic principles and applications of thin film deposition techniques for practical use. It provides and develops design guidelines to realize multilayer structures in microcircuits, thus addressing a critical and rapidly growing area.
Download or read book Compendium of Thermophysical Property Measurement Methods written by A. Cezairliyan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on the extensive coverage of the first volume, Volume 2 focuses on the fundamentals of measurements and computational techniques that will aid researchers in the construction and use of measurement devices.
Download or read book Coatings and Thin Film Technologies written by Jaime Andres Perez Taborda and published by BoD – Books on Demand. This book was released on 2019-01-03 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of coatings and thin-film technologies is rapidly advancing to keep up with new uses for semiconductor, optical, tribological, thermoelectric, solar, security, and smart sensing applications, among others. In this sense, thin-film coatings and structures are increasingly sophisticated with more specific properties, new geometries, large areas, the use of heterogeneous materials and flexible and rigid coating substrates to produce thin-film structures with improved performance and properties in response to new challenges that the industry presents. This book aims to provide the reader with a complete overview of the current state of applications and developments in thin-film technology, discussing applications, health and safety in thin films, and presenting reviews and experimental results of recognized experts in the area of coatings and thin-film technologies.
Download or read book Measurement of the Thermoelectric Properties of Bulk and Thin Film Materials written by and published by . This book was released on 1996 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The figure-of-merit (Z) of a thermoelectric material is defined as Z = S2/[rho]k, where S is the Seebeck coefficient, [rho] is the electrical resistivity, and k is the thermal conductivity. Since Z is composed of three components, it is sensitive to measurement errors in each of the components. For example, a Seebeck coefficient measurement which is only 17% high combined with electrical resistivity and thermal conductivity measurements which are 17% too low will result in a Z value which is double the correct value. It is therefore important to observe correct technique when performing measurements of S, [rho], and k; and to recognize the limitations of the measurements. The purpose of the course is to address some of those issues in order to increase the accuracy of the thermoelectric measurements.
Download or read book Thermoelectric Materials written by Terry M. Tritt and published by . This book was released on 1997 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoelectric materials are utilized in a wide variety of applications related to solid-state refrigeration or small-scale power generation. More specifically, these applications range from beverage coolers to power generation for deep-space probes such as the Voyager missions. Over the past several years, however, research in the field of thermoelectric materials has been undergoing a rapid rebirth. The enhanced interest in better thermoelectric materials has been driven by the need for much higher performance and new temperature regimes in thermoelectric devices. The focus of this volume is embodied in the title, New Directions and Approaches. The volume emphasizes the multidisciplinary nature of the research needed to advance the science and technology. Theoretical studies in materials design, which provide guidance to the experimentalist, are reviewed. Experimental efforts are also featured and include new capabilities in solid-state synthesis, thin-film and superlattice development, and new developments in property measurement of which thermal conductivity will play a central role. New ideas in device design are also discussed.
Download or read book Thin Film Physics And Devices Fundamental Mechanism Materials And Applications For Thin Films written by Jianguo Zhu and published by World Scientific. This book was released on 2021-06-18 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin films have an extremely broad range of applications from electronics and optics to new materials and devices. Collaborative and multidisciplinary efforts from physicists, materials scientists, engineers and others have established and advanced a field with key pillars constituting (i) the synthesis and processing of thin films, (ii) the understanding of physical properties in relation to the nanometer scale, (iii) the design and fabrication of nano-devices or devices with thin film materials as building blocks, and (iv) the design and construction of novel tools for characterization of thin films.Against the backdrop of the increasingly interdisciplinary field, this book sets off to inform the basics of thin film physics and thin film devices. Readers are systematically introduced to the synthesis, processing and application of thin films; they will also study the formation of thin films, their structure and defects, and their various properties — mechanical, electrical, semiconducting, magnetic, and superconducting. With a primary focus on inorganic thin film materials, the book also ventures on organic materials such as self-assembled monolayers and Langmuir-Blodgett films.This book will be effective as a teaching or reference material in the various disciplines, ranging from Materials Science and Engineering, Electronic Science and Engineering, Electronic Materials and Components, Semiconductor Physics and Devices, to Applied Physics and more. The original Chinese publication has been instrumental in this purpose across many Chinese universities and colleges.
Download or read book Thermal Conductivity 30 written by Daniela S. Gaal and published by DEStech Publications, Inc. This book was released on 2010 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer in Thin Films written by S. T. Thynell and published by . This book was released on 1994 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes six papers from the November 1994 congress, covering research topics in the development of an analytical solution of a parabolic two-step radiation model applicable to fast laser heating of metals, and supercritical convection in a thin porous medium. No index. Annotation copyright Book New
Download or read book Quantitative Temperature Sensing and Thin Film Thermal Conductivity Measurement by Non contact Scanning Thermal Microscopy written by Yun Zhang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
