Size, Shape, and Synthesis Key to "Tuning" Properties The discovery and rapid evolution of carbon nanotubes have led to a vastly improved understanding of nanotechnology, as well as dozens of possible applications for nanomaterials of different shapes and sizes ranging from composites to biology, medicine, energy, transportation, and electronic devices. Nanotubes and Nanofibers offers an overview of structure-property relationships, synthesis and purification, and potential applications of carbon nanotubes and fibers, including whiskers, cones, nanobelts, and nanowires. Using research on carbon nanotubes as a foundation to further developments, this book discusses methods for growing and synthesizing amorphous and nanocrystalline graphitic carbon structures and inorganic nanomaterials, including wet chemical synthesis, chemical vapor deposition (CVD), arc discharge, and others. It also describes boron nitride and metal chalcogenide nanotubes in detail and reviews the unique properties and methods for characterizing and producing single-crystalline semiconducting and functional-oxide nanowires. The chapters also identify challenges involving the controlled growth, processing, and assembly of organic and inorganic nanostructures that must be addressed before large-scale applications can be implemented. Edited by award-winning professor and researcher Dr. Yury Gogotsi, Nanotubes and Nanofibers offers a well-rounded perspective on the advances leading to improved nanomaterial properties for a range of new devices and applications including electronic devices, structural composites, hydrogen and gas storage, electrodes in electrochemical energy-storage systems, sorbents, and filters.

Using research on carbon nanotubes as a foundation to further developments, this book discusses methods for growing and synthesizing amorphous and nanocrystalline graphitic carbon structures and inorganic nanomaterials, including wet chemical synthesis, chemical vapor deposition (CVD), arc discharge, and others.

Size, Shape, and Synthesis Key toTuning Properties The discovery and rapid evolution of carbon nanotubes have led to a vastly improved understanding of nanotechnology, as well as dozens of possible applications for nanomaterials of different shapes and sizes ranging from composites to biology, medicine, energy, transportation, a

The field of C-nanoparticles toxicity is, at present, fragmented and contradictory, oscillating between enthusiastic raptures and bitter disappointments. This important book presents an overall, unitary view of the carbon nanoparticle world, in which both the positive and negative aspects of these recently discovered nanomaterials are critically de

This book covers the fundamentals and applications of Carbon Nanofiber (CNF). In the first section, the initial chapter on the fundamentals of CNF is by Professor Maheshwar Sharon, the recognized “Father of Carbon Nanotechnology in India”, which powerfully provides a succinct overview of CNFs. This is followed by a chapter on biogenics that have produced unique morphologies of CNF that makes them suitable to various applications. This is followed by a chapter that mainly focuses on nanocomposites, especially those involving nanocomposites of CNF. The role of nanocatalysts and composites in promoting and enhancing the synthesis and application of CNF is then covered, followed by an important chapter on the characterization of CNF. The second section of the book encompasses the various applications of CNF, such as its use as a possible superconductor to adsorb and store hydrogen, and as a microwave absorber. The application of CNF for environmental concerns is also detailed by assessing its usefulness in dye and heavy metal removal from polluted water. The applications that are addressed include lithium-ion battery, solar cell, antenna, cosmetics, usefulness in regenerative medicine, as well as various aspects of agrotechnology.

Results from recent animal studies indicate that carbon nanotubes (CNT) and carbon nanofibers (CNF) may pose a respiratory hazard. CNTs and CNFs are tiny, cylindrical, large aspect ratio, manufactured forms of carbon. There is no single type of carbon nanotube or nanofiber; one type can differ from another in shape, size, chemical composition (from residual metal catalysts or functionalization of the CNT and CNF) and other physical and chemical characteristics. Such variations in composition and size have added to the complexity of understanding their hazard potential. Occupational exposure to CNTs and CNFs can occur not only in the process of manufacturing them, but also at the point of incorporating these materials into other products and applications. This book reviews the animal and other toxicological data relevant to assessing the potential non-malignant adverse respiratory effects of CNT and CNF; provides a quantitative risk assessment based on animal dose-response data; proposes a recommended exposure limit (REL) of 1 ?g/m3 elemental carbon as a respirable mass 8-hour time-weighted average (TWA) concentration; and describes strategies for controlling workplace exposures and implementing a medical surveillance program.

Nanotechnology is revolutionising the world of materials. This important book reviews its impact in developing a new generation of textile fibers with enhanced functionality and a wide range of applications. The first part of the book reviews nanofiber production, discussing how different fiber types can be produced using electrospinning techniques. Part two analyses the production and properties of carbon nanotubes and polymer nanocomposites and their applications in such areas as aerospace engineering. The third part of the book considers ways of using nanotechnology to improve polymer properties such as thermal stability and dyeability. The final part of the book reviews the use of nanotechnology to modify textile surfaces, including the use of coatings and films, in order to improve hydrophobic, filtration and other properties.Nanofibers and nanotechnology in textiles is a valuable reference in assessing and using a new generation of textile fibers in applications as diverse as tissue and aerospace engineering. - Nanotechnology is revolutionising the world of materials - Learn about a new generation of textile fibers that have a wide range of applications - Examines how to improve polymer properties

This book focuses on the application of carbon nanotubes and carbon nanofibers in traditional concretes based on Portland cement. Fundamental information is given related to the production technologies of carbon nanotubes and carbon nanofibers, as well as concretes and methods of incorporation. It also contains a section focusing on the possible negative effects of carbon nanotubes and carbon nanofibers on animals and humans. The book indicates benefits and possible problems related to the application of carbon nanotubes and carbon nanofibers in concrete. It is designed to be easy to access and digest for the reader, aiming to reach an audience, not only from academia, but also from the construction industry, materials producers, and contractors who might work with nanomaterials. - Outlines the major properties and synthesis methods for carbon nanomaterials in concrete engineering; - Explains the role of carbon nanotubes and nanofibers in creating high-performance concrete; - Assesses the major challenges of integrating carbon nanomaterials into concrete manufacture on an industrial scale.

This book is a printed edition of the Special Issue "Nanofibres: Friend or Foe?" that was published in Fibers

Nanotechnology is the creation of useful materials, devices, and systems through the control of matter on the nanometer-length scale. This takes place at the scale of atoms, molecules, and supramolecular structures. In the world of chemistry, the rational design of molecular structures and optimized control of self-assembly conditions have enabled us to control the resultant self-assembled morphologies having 1 to 100-nm dimensions with sing- nanometer precision. This current research trend applying the bottom-up approach to molecules remarkably contrasts with the top-down approach in nanotechnology, in which electronic devices are miniaturizing to smaller than 30 nm. However, even engineers working with state-of-the-art computer te- nology state that maintaining the rate of improvement based on Moore’s law will be the most dif?cult challenge in the next decade. On the other hand, the excellent properties and intelligent functions of a variety of natural materials have inspired polymer and organic chemists to tailor their synthetic organic alternatives by extracting the essential structural elements. In particular, one-dimensional structures in nature with sophis- cated hierarchy, such as myelinated axons in neurons, tendon, protein tubes of tubulin, and spider webs, provide intriguing examples of integrated functions and properties. Against this background, supramolecular self-assembly of one-dimensional architectures like ?bers and tubes from amphiphilic molecules, bio-related molecules, and properly designed self-assembling polymer molecules has - tracted rapidly growing interest.