Download or read book Growth and Transport in Nanostructured Materials written by Angel Yanguas-Gil and published by Springer. This book was released on 2016-11-30 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will address the application of gas phase thin film methods, including techniques such as evaporation, sputtering, CVD, and ALD to the synthesis of materials on nanostructured and high aspect-ratio high surface area materials. We have chosen to introduce these topics and the different application fields from a chronological perspective: we start with the early concepts of step coverage and later conformality in semiconductor manufacturing, and how later on the range of application branched out to include others such as energy storage, catalysis, and more broadly nanomaterials synthesis. The book will describe the ballistic and continuum descriptions of gas transport on nanostructured materials and then will move on to incorporate the impact of precursor-surface interaction. We will finally conclude approaching the subjects of feature shape evolution and the connection between nano and reactor scales and will briefly present different advanced algorithms that can be used to effectively compute particle transport, in some cases borrowing from other disciplines such as radiative heat transfer. The book gathers in a single place information scattered over thirty years of scientific research, including the most recent results in the field of Atomic Layer Deposition. Besides a mathematical description of the fundamentals of thin film growth in nanostructured materials, it includes analytic expressions and plots that can be used to predict the growth using gas phase synthesis methods in a number of ideal approximations. The focus on the fundamental aspects over particular processes will broaden the appeal and the shelf lifetime of this book. The reader of this book will gain a thorough understanding on the coating of high surface area and nanostructured materials using gas phase thin film deposition methods, including the limitations of each technique. Those coming from the theoretical side will gain the knowledge required to model the growth process, while those readers more interested in the process development will gain the theoretical understanding will be useful for process optimization.

Download or read book Nanoscale Thermal Transport written by and published by . This book was released on 2003 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid progress in the synthesis and processing of materials with structure on nanometer length scales has created a demand for greater scientific understanding of thermal transport in nanoscale devices, individual nanostructures, and nanostructured materials. This review emphasizes development in experiment, theory and computation that have occurred in the past ten years and summarizes the present status of the field.

Download or read book Thermal Transport in Carbon Based Nanomaterials written by Gang Zhang and published by Elsevier. This book was released on 2017-06-13 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal Transport in Carbon-Based Nanomaterials describes the thermal properties of various carbon nanomaterials and then examines their applications in thermal management and renewable energy. Carbon nanomaterials include: one-dimensional (1D) structures, like nanotubes; two-dimensional (2D) crystal lattice with only one-atom-thick planar sheets, like graphenes; composites based on carbon nanotube or graphene, and diamond nanowires and thin films. In the past two decades, rapid developments in the synthesis and processing of carbon-based nanomaterials have created a great desire among scientists to gain a greater understanding of thermal transport in these materials. Thermal properties in nanomaterials differ significantly from those in bulk materials because the characteristic length scales associated with the heat carriers, phonons, are comparable to the characteristic length. Carbon nanomaterials with high thermal conductivity can be applied in heat dissipation. This looks set to make a significant impact on human life and, with numerous commercial developments emerging, will become a major academic topic over the coming years. This authoritative and comprehensive book will be of great use to both the existing scientific community in this field, as well as for those who wish to enter it. Includes coverage of the most important and commonly adopted computational and experimental methods to analyze thermal properties in carbon nanomaterials Contains information about the growth of carbon nanomaterials, their thermal properties, and strategies to control thermal properties and applications, allowing readers to assess how to use each material most efficiently Offers a comprehensive overview of the theoretical background behind thermal transport in carbon nanomaterials

Download or read book Physics and Chemistry of Nano structured Materials written by Shihe Yang and published by CRC Press. This book was released on 2003-09-02 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of nanostructured materials represents a new and fast evolving application of recent research in physics and chemistry. Novel experimental tools coupled with new theory have made this possible. Topics covered in this book include nanocrystals, semiconductor heterostructures, nanotubes, nanowires, and manipulation and fabrication techniques. The core of the book consists of ten lectures by five distinguished researchers, Paul Alivisatos, D.D. Awschalom, Sumio Iijima, Charles Lieber and Phaedon Avouris, presented at an Advanced Study Institute in Hong Kong in January 1999. It should interest materials physicists and chemists as well as materials scientists with an interest in the growth and characterisation of sophisticated materials.

Download or read book Transport Phenomena in Thermoelectric and Ferromagnetic Nanostructures written by Johannes Kimling and published by Cuvillier Verlag. This book was released on 2013-09-23 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on transport phenomena in a variety of materials has played a decisive role in the development of solidstate physics and has led to important applications of functional materials, e.g. for the conversion and storage of energy or in the fi eld of storage and processing of data. This thesis deals with transport phenomena in nanoscale systems. The Seebeck effect is explored in Bi2Te3 nanowires, the anisotropic magnetothermal resistance effect in Ni nanowires, and the giant magnetothermal resistance effect in Co/Cu multilayers.

Download or read book Nanostructured Semiconductors written by Konstantinos Termentzidis and published by CRC Press. This book was released on 2017-09-01 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is devoted to nanostructures and nanostructured materials containing both amorphous and crystalline phases with a particular focus on their thermal properties. It is the first time that theoreticians and experimentalists from different domains gathered to treat this subject. It contains two distinct parts; the first combines theory and simulations methods with specific examples, while the second part discusses methods to fabricate nanomaterials with crystalline and amorphous phases and experimental techniques to measure the thermal conductivity of such materials. Physical insights are given in the first part of the book, related with the existing theoretical models and the state of art simulations methods (molecular dynamics, ab-initio simulations, kinetic theory of gases). In the second part, engineering advances in the nanofabrication of crystalline/amorphous heterostructures (heavy ion irradiation, electrochemical etching, aging/recrystallization, ball milling, PVD, laser crystallization and magnetron sputtering) and adequate experimental measurement methods are analyzed (Scanning Thermal Microscopy, Raman, thermal wave methods and x-rays neutrons spectroscopy).

Download or read book New Frontiers of Nanoparticles and Nanocomposite Materials written by Andreas Öchsner and published by Springer Science & Business Media. This book was released on 2014-07-08 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of nanomaterials opens the possibility for new materials with outstanding properties compared to classical engineering materials. These materials can find applications in different fields such as medical treatment or structural mechanics. This monograph focuses on two major groups of nanomaterials, i.e.nanoparticels and nanocomposites. Nanopartices, for example in the form of hollow particles, allow for new possibilities in drug delivery. Different aspects of nanoparticles ranging from manufacturing to modeling and simulation are covered. Nanocomposite materials are formed by mixing two or more dissimilar materials at the nanoscale in order to control and develop new and improved structures and properties. The properties of nanocomposites depend not only on the individual components used but also on the morphology and the interfacial characteristics. Nanocomposite coatings and materials are one of the most exciting and fastest growing areas of research and novel properties being continuously developed which are previously unknown in the constituent materials. Thus, the second part of this monograph gives an overview on the latest developments in the area of composites and coatings based on nanomaterials.

Download or read book Nanostructured Functional and Flexible Materials for Energy Conversion and Storage Systems written by Alagarsamy Pandikumar and published by Elsevier. This book was released on 2020-05-27 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured, Functional, and Flexible Materials for Energy Conversion and Storage Systems gathers and reviews developments within the field of nanostructured functional materials towards energy conversion and storage. Contributions from leading research groups involved in interdisciplinary research in the fields of chemistry, physics and materials science and engineering are presented. Chapters dealing with the development of nanostructured materials for energy conversion processes, including oxygen reduction, methanol oxidation, oxygen evolution, hydrogen evolution, formic acid oxidation and solar cells are discussed. The work concludes with a look at the application of nanostructured functional materials in energy storage system, such as supercapacitors and batteries. With its distinguished international team of expert contributors, this book will be an indispensable tool for anyone involved in the field of energy conversion and storage, including materials engineers, scientists and academics. Covers the importance of energy conversion and storage systems and the application of nanostructured functional materials toward energy-relevant catalytic processes Discusses the basic principles involved in energy conversion and storage systems Presents the role of nanostructured functional materials in the current scenario of energy-related research and development

Download or read book The Effects of Nanostructuring on the Thermal Transport of Electronic Materials written by Nicholas T. Vu and published by . This book was released on 2019 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Understanding the fundamental energy transport mechanisms in nanostructured materials is vital to the development of smaller, energy-dense systems. This is particularly important in materials used in high power density electronic systems and renewable energy platforms, where performance is directly tied to the thermal properties of constituent materials. By altering the nanostructure, the thermal properties can be tailored to meet various needs. Frequency Domain Thermoreflectance (FDTR), an optical pump-probe thermal characterization technique, is used to characterize the thermal properties of different electronic materials. An FDTR system was built as part of this project and validated with reference scans of known materials. This work thermally characterizes nickel titanium (NiTi), germanium telluride (GeTe), Bi2Te3/Bi2(TeSe)3 superlattices, and gallium nitride (GaN). NiTi is a candidate material for elastocaloric cooling and thermal energy storage applications. We show that increasing the grain size of NiTi significantly increases thermal conductivity on both sides of the phase change. We study the impact of film thickness on the thermal conductivity of the crystalline and amorphous phases of germanium telluride (GeTe). It was found that the mean free path of heat energy carriers is similar in both phases of the material. The application of a phonon scattering model to a thickness-dependent thermal conductivity dataset indicates that phonon boundary scattering is the predominant physical mechanism that limits thermal transport in thin-films of GeTe. Superlattices with alternating thin-films of Bi2Te3 and Bi2(TeSe)3 were thermally characterized. We find a large degree of thermal anisotropy and a significant increase in the in-plane thermal conductivity compared to bulk values, possibly due to a topological insulator effect. We report preliminary results of the thermal conductivity of seed-grown GaN films with a grain size gradient on partially etched substrates."--from abstract.

Download or read book Thermal Transport in Nanoporous Materials for Energy Applications written by Jin Fang and published by . This book was released on 2012 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study investigates the complex relationship between nanostructures and microscale thermal transport in nanoporous thin films for energy applications. It experimentally and numerically demonstrates that the effective thermal conductivity of nanoporous materials can be tuned by controlling their nanoscale architectures including porosity, pore diameter, wall thickness, nanocrystal size, and crystallinity as well as surface passivation. This study reports measurements of the cross-plane thermal conductivity of nanoporous thin films with various architectures between 25 and 315 K. Physics-based models combining phonon transport theory and effective medium approximations were developed to interpret the experimental data. Ordered mesoporous titania and silicon thin films were prepared based on evaporation-induced self-assembly method. Pure silica zeolite films were produced by either in-situ growth or by spin coating a zeolite nanoparticle suspension followed by crystal growth upon heating. These synthesized thin films were systematically and fully characterized. They featured ordered nanopores with porosity, pore diameter, and film thickness ranging from 30% to 59%, 0.5 to 25 nm, and 120 to 370 nm, respectively. Their dense matrix was amorphous, polycrystalline, or consisted of an aggregate of nanocrystals. The thermal conductivity of all synthesized nanoporous films increased monotonically with temperature within the temperature range considered. At low temperatures, the nanoporous films behaved like amorphous or strongly disordered materials and their thermal conductivity was proportional to T^n with n varied between 1 and 2.3. At high temperatures, the thermal conductivity increased slowly with temperature or reached a plateau due to strong phonon Umklapp scattering and the saturation of phonon modes. The presence of pores in amorphous mesoporous thin films had a purely geometrical effect by reducing the cross-sectional area through which heat can diffuse. By contrast, in crystalline mesoporous thin films the presence of pores also increased phonon scattering. In addition, the film thickness generally did not affect the measured thermal conductivity. Indeed, phonon scattering by pores and by nanocrystal grain boundary dominated over boundary scattering and were identified as the dominant scattering mechanisms for nanoscale energy transport in the synthesized nanoporous films. This study further establishes that the effective thermal conductivity keff of crystalline nanoporous silicon was strongly affected not only by the porosity fv and the system's length Lz but also by the pore interfacial area concentration Ai. A modified effective medium approximation combining kinetic theory and the coherent potential approximation suggested that keff was proportional to (1-1.5fv) and inversely proportional to the sum (Ai/4+1/Lz). This scaling law was in excellent agreement with the thermal conductivity of nanoporous silicon predicted by molecular dynamics simulations for spherical pores as well as for cylindrical pores and vacancy defects. Finally, this study demonstrated, using equilibrium molecular dynamics simulations, that surface passivation added another parameter for reducing the thermal conductivity of nanostructured materials. To do so, there should be strong acoustic vibrational modes coupling between surface and passivation atoms. For example, oxygen passivation reduced the thermal conductivity of nanoporous crystalline silicon. In addition, the effect of passivation reduced with temperature because of increasing contribution of Umklapp scattering. These results could help establish new strategies to control the thermal conductivity of nanoporous materials for a wide range of applications including thermoelectric devices, supercapacitors, dye-sensitized solar cells, and hydrogen storage devices.

Download or read book Mass Transport of Nanocarriers written by Rita Elena Serda and published by CRC Press. This book was released on 2016-04-19 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes barriers from the macro to the nanoscale, starting with endothelial and mucosal barriers, and ending with cellular organelles. Experimental approaches to track nanoparticles in vitro and in vivo are presented, as well as the ability to tailor-make nanoparticles for specific functions. Several model types of nanoparticles are pre

Download or read book Nanoscopic Materials written by Emil Roduner and published by Royal Society of Chemistry. This book was released on 2015-10-15 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years there have been great advances in the development of new nanomaterials. To facilitate the progress of new materials it is essential to understand the underlying principles at the nanoscale. Nanoscopic Materials provides an accessible overview of the physico-chemical and physical principles of nanomaterials including electronic structure, magnetic properties, thermodynamics of size dependence and phase transitions and dynamics of clusters and two-dimensional systems. This new edition has been fully revised and updated to reflect recent developments in new nanomaterials including graphene and core–shell structures, properties of nano-structured and intelligent surfaces as well as applications in catalysis and energy. Additional chapters cover the development of nucleation and crystal shape engineering; self-assembly and biomimetics for fabricating nanostructures. With helpful illustrations and summaries of key points in every chapter, this advanced textbook is ideal for graduate students of chemistry and materials science and researchers new to the field of nanoscience and nanotechnology.

Download or read book Nanostructured Materials for Electrochemical Energy Production and Storage written by Edson Roberto Leite and published by Springer Science & Business Media. This book was released on 2010-03-20 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is an authoritative reference from world-renowned research groups for those working in materials science and electrochemistry. The authors describe properties of nanostructured materials that can improve performance in alternative energy devices.

Download or read book 21st Century Nanostructured Materials written by Phuong Pham and published by BoD – Books on Demand. This book was released on 2022-04-20 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials (NMs) are attracting interest as low-dimensional materials in the high-tech era of the 21st century. Recently, nanomaterials have experienced breakthroughs in synthesis and industrial and biomedical applications. This book presents recent achievements related to NMs such as graphene, carbon nanotubes, plasmonic materials, metal nanowires, metal oxides, nanoparticles, metamaterials, nanofibers, and nanocomposites, along with their physical and chemical aspects. Additionally, the book discusses the potential uses of these nanomaterials in photodetectors, transistors, quantum technology, chemical sensors, energy storage, silk fibroin, composites, drug delivery, tissue engineering, and sustainable agriculture and environmental applications.

Download or read book Functional Nanostructured Materials and Membranes for Water Treatment written by Mikel Duke and published by John Wiley & Sons. This book was released on 2013-03-14 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membranes have emerged over the last 30 years as a viable water treatment technology. Earth's population is growing and the need for alternative ways to generate potable water is rising. The recent advent of nanotechnology opens the door to improving processes in membrane technology, which is a promising step on the way to solving the earth's potable water problem. Current performance is enhanced and new concepts are possible by engineering on the nanoscale. This book presents key areas of nanotechnology such as fouling tolerant and robust membranes, enhanced destruction of pollutants and faster monitoring of water quality. 'Functional Nanostructured Materials and Membranes for Water Treatment' is part of the series on Materials for Sustainable Energy and Development edited by Prof. G.Q. Max Lu. The series covers advances in materials science and innovation for renewable energy, clean use of fossil energy, and greenhouse gas mitigation and associated environmental technologies.

Download or read book Nanostructured Materials and Systems written by Sanjay Mathur and published by John Wiley & Sons. This book was released on 2010-09-21 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Symposium on Nanostructured Materials and Systems was held during the 8th Pacific Rim Conference on Ceramic and Glass Technology (PACRIM 8) from May 31-June 5, 2009 in Vancouver, Canada. This symposium aimed to review the progress in the state-of-the-art of nanoscience and nanotechnology including synthesis, processing, modeling, applications and assessment of toxicological potential of nanomatter. More than 55 contributions (invited talks, oral presentations, and posters), were presented by participants, from all over the world, representing universities, research institutions, and industry which made this symposium an attractive forum for interdisciplinary presentations and discussions and to elaborate their functional diversity. This issue contains 16 peer-reviewed papers (invited and contributed) incorporating the latest developments related to synthesis, processing and manufacturing technologies of nanoscaled materials and systems including one-dimensional nanostructures, nanoparticle-based composites, electrospinning of nanofibers, functional thin films, ceramic membranes, bioactive materials and self-assembled functional nanostructures and nanodevices. These papers discuss several important aspects related to fabrication and engineering issues necessary for understanding and further development of processing and manufacturing of nanostructured materials and systems.

Download or read book Graphene Carbon Nanotubes and Nanostructures written by James E. Morris and published by CRC Press. This book was released on 2017-07-28 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene, Carbon Nanotubes, and Nanostructures: Techniques and Applications offers a comprehensive review of groundbreaking research in nanofabrication technology and explores myriad applications that this technology has enabled. The book examines the historical evolution and emerging trends of nanofabrication and supplies an analytical understanding of some of the most important underlying nanofabrication technologies, with an emphasis on graphene, carbon nanotubes (CNTs), and nanowires. Featuring contributions by experts from academia and industry around the world, this book presents cutting-edge nanofabrication research in a wide range of areas. Topics include: CNT electrodynamics and signal propagation models Electronic structure calculations of a graphene–hexagonal boron nitride interface to aid the understanding of experimental devices based on these heterostructures How a laser field would modify the electronic structure and transport response of graphene, to generate bandgaps The fabrication of transparent CNT electrodes for organic light-emitting diodes Direct graphene growth on dielectric substrates, and potential applications in electronic and spintronic devices CNTs as a promising candidate for next-generation interconnect conductors CMOS–CNT integration approaches, including the promising localized heating CNT synthesis method CNTs in electrochemical and optical biosensors The synthesis of diamondoids by pulsed laser ablation plasmas generated in supercritical fluids, and possible applications The use of DNA nanostructures in lithography CMOS-compatible silicon nanowire biosensors The use of titanium oxide-B nanowires to detect explosive vapors The properties of protective layers on silver nanoparticles for ink-jet printing Nanostructured thin-film production using microreactors A one-stop reference for professionals, researchers, and graduate students working in nanofabrication, this book will also be useful for investors who want an overview of the current nanofabrication landscape.