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Rapid Growth Of Dense And Long Carbon Nanotube Arrays And Its Application In Spinning Thread
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Book Synopsis Rapid Growth of Dense and Long Carbon Nanotube Arrays and Its Application in Spinning Thread by : Yasuhiko Hayashi
Download or read book Rapid Growth of Dense and Long Carbon Nanotube Arrays and Its Application in Spinning Thread written by Yasuhiko Hayashi and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs), a dependable allotrope of carbon, are foreseen to lead technology further to its reach. Also, the most researched carbon allotrope in its form. Drawable CNTs have recently unraveled numerous possible applications utilizing vertically aligned CNTs also termed as "CNT forest." In recent years, the rapid growth of dense and long carbon nanotube arrays has succeeded in surpassing its challenges by synthesizing dense and long CNT arrays. Length, density, and drawability tuning in the synthesis of CNT arrays have always been a complex issue lately. However, numerous research techniques emerged focusing on length and density control. Hence, this book chapter aids in unveiling the current achievements in the growth of dense and long CNT arrays and their application in spinning threads or CNT yarns with numerous other possible applications.
Book Synopsis Carbon Nanotubes by : Mohammed Rahman
Download or read book Carbon Nanotubes written by Mohammed Rahman and published by BoD – Books on Demand. This book was released on 2018-04-26 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Carbon Nanotubes - Recent Progress contains a number of recent researches on synthesis, growth, characterization, development, and potential applications on carbon materials especially CNTs in nanoscale. It is a promising novel research from top to bottom that has received a lot of interest in the last few decades. It covers the advanced topics on the physical, chemical, and potential applications of CNTs. Here, the interesting reports on cutting-edge science and technology related to synthesis, morphology, control, hybridization, and prospective applications of CNTs are concluded. This potentially unique work offers various approaches on the R
Book Synopsis Nanotube Superfiber Materials by : Yoku Inoue
Download or read book Nanotube Superfiber Materials written by Yoku Inoue and published by Elsevier Inc. Chapters. This book was released on 2013-09-16 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultralong multiwalled carbon nanotube arrays (forests) were grown by chloride-mediated chemical vapor deposition, in which iron chloride was used as a catalyst precursor. Highly spinnable millimeter-long arrays were grown with a very rapid growth rate of 100 μm/min. By stacking long-lasting carbon nanotube (CNT) webs, unidirectionally aligned CNT sheets were fabricated. The sheet was highly anisotropic in electrical and thermal properties and due to high alignment of the CNTs in the sheets. CNT yarns were fabricated using the millimeter-long CNTs and a detailed analysis of various postspin processes, including postspin twisting and multiply twisting, and their effect on CNT yarns were studied. Mechanical properties clearly depended on the dimensions of CNTs, where thinner and longer CNTs led to strong and stiff yarns. Large contacting surface areas in the yarns, brought by closer packing with high-aspect-ratio CNTs, were effective for higher van der Waals interaction leading to higher tensile properties. Growth of millimeter-long highly spinnable CNT arrays and the material properties of tailored large-scale CNT structures, including unidirectionally aligned sheets and spun yarns, are described.
Book Synopsis Nanotube Superfiber Materials by : Mark Schulz
Download or read book Nanotube Superfiber Materials written by Mark Schulz and published by William Andrew. This book was released on 2013-09-16 with total page 861 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotube Superfiber Materials refers to different forms of macroscale materials with unique properties constructed from carbon nanotubes. These materials include nanotube arrays, ribbons, scrolls, yarn, braid, and sheets. Nanotube materials are in the early stage of development and this is the first dedicated book on the subject. Transitioning from molecules to materials is a breakthrough that will positively impact almost all industries and areas of society. Key properties of superfiber materials are high flexibility and fatigue resistance, high energy absorption, high strength, good electrical conductivity, high maximum current density, reduced skin and proximity effects, high thermal conductivity, lightweight, good field emission, piezoresistive, magnetoresistive, thermoelectric, and other properties. These properties will open up the door to dozens of applications including replacing copper wire for power conduction, EMI shielding, coax cable, carbon biofiber, bullet-proof vests, impact resistant glass, wearable antennas, biomedical microdevices, biosensors, self-sensing composites, supercapacitors, superinductors, hybrid superconductor, reinforced elastomers, nerve scaffolding, energy storage, and many others. The scope of the book covers three main areas: Part I: Processing; Part II: Properties; and Part III: Applications. Processing involves nanotube synthesis and macro scale material formation methods. Properties covers the mechanical, electrical, chemical and other properties of nanotubes and macroscale materials. Different approaches to growing high quality long nanotubes and spinning the nanotubes into yarn are explained in detail. The best ideas are collected from all around the world including commercial approaches. Applications of nanotube superfiber cover a huge field and provides a broad survey of uses. The book gives a broad overview starting from bioelectronics to carbon industrial machines. First book to explore the production and applications of macro-scale materials made from nano-scale particles Sets out the processes for producing macro-scale materials from carbon nanotubes, and describes the unique properties of these materials Potential applications for CNT fiber/yarn include replacing copper wire for power conduction, EMI shielding, coax cable, carbon biofiber, bullet-proof vests, impact resistant glass, wearable antennas, biomedical microdevices, biosensors, self-sensing composites, supercapacitors, superinductors, hybrid superconductor, reinforced elastomers, nerve scaffolding, energy storage, and many others
Book Synopsis Advanced Materials Based on Carbon Nanotube Arrays, Yarns and Papers by :
Download or read book Advanced Materials Based on Carbon Nanotube Arrays, Yarns and Papers written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes have hundreds of potential applications but require innovative processing techniques to manipulate the microscopic carbon dust into useful devices and products. This thesis describes efforts to process carbon nanotubes (CNTs) using novel methods with the goals of: 1) improving the properties of energy absorbing and composite carbon nanotube materials and 2) increasing understanding of fundamental structure â€" property relationships within these materials. Millimeter long CNTs, in the form of arrays, yarns and papers, were used to produce energy absorbing foams and high volume fraction CNT composites. Vertically aligned CNT arrays were grown on silicon substrates using chemical vapor deposition (CVD) of ethylene gas over iron nano-particles. The low density, millimeter thick arrays were tested under compression as energy absorbing foams. With additional CVD processing steps, it was possible to tune the compressive properties of the arrays. After the longest treatment, the compressive strength of the arrays was increased by a factor of 35 with a density increase of only six fold, while also imparting recovery from compression to the array. Microscopy revealed that the post-synthesis CVD treatment increased the number of CNT walls through an epitaxial type radial growth on the surface of the as-grown tubes. The increase in tube radius and mutual support between nanotubes explained the increases in compressive strength while an increase in nanotube roughness was proposed as the morphological change responsible for recovery in the array. Carbon nanotube yarns were used as the raw material for macroscopic textile preforms with a multi-level hierarchical carbon nanotube (CNT) structure: nanotubes, bundles, spun single yarns, plied yarns and 3-D braids. In prior tensile tests, composites produced from the 3-D braids exhibited unusual mechanical behavior effects. The proposed physical hypotheses explained those effects by molecular level interactions and mo.
Book Synopsis Carbon Nanotube Fibres and Yarns by : Menghe Miao
Download or read book Carbon Nanotube Fibres and Yarns written by Menghe Miao and published by Woodhead Publishing. This book was released on 2019-09-14 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotube Fibres and Yarns for Smart Textiles: Production, Properties and Applications in Smart Textiles explains the relevance of carbon nanotube science and provides new insights on this emerging, high-performance textile material. Particular emphasis is placed on applications in smart textiles and wearable electronics applications, such as flexible sensors, actuators and energy sources. This collection examines the state-of-the-art in carbon nanotube (CNT) research, providing guidance for anyone who is exploring problems where CNTs may provide design solutions. Finally, the book addresses advances in yarn spinning methods, yarn structures and properties. Drawing on his experience in the textile industry, the book's editor presents academic research in a way that is comprehensible and useful to materials scientists and engineers in practice. Explains how carbon nanotube science can meet the challenging requirements of important and emerging smart textiles and wearable electronics applications Reviews and analyzes key developments on CNT yarn spinning methods, yarn structures and properties, and proposed applications Addresses the potential applications of CNT yarns and nanocomposite fibers
Book Synopsis Industrial Applications of Carbon Nanotubes by : Huisheng Peng
Download or read book Industrial Applications of Carbon Nanotubes written by Huisheng Peng and published by William Andrew. This book was released on 2016-10-08 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial Applications of Carbon Nanotubes covers the current applications of carbon nanotubes in various industry sectors, from the military to visual display products, and energy harvesting and storage. It also assesses the opportunities and challenges for increased commercialization and manufacturing of carbon nanotubes in the years ahead. Real-life case studies illustrate how carbon nanotubes are used in each industry sector covered, providing a valuable resource for scientists and engineers who are involved and/or interested in carbon nanotubes in both academia and industry. The book serves as a comprehensive guide to the varied uses of carbon nanotubes for specialists in many related fields, including chemistry, physics, biology, and textiles. Explains how carbon nanotubes can be used to improve the efficiency and performance of industrial products Includes real-life case studies to illustrate how carbon nanotubes have been successfully employed Explores how carbon nanotubes could be mass-manufactured in the future, and outlines the challenges that need to be overcome
Book Synopsis Aligned Carbon Nanotubes by : Zhifeng Ren
Download or read book Aligned Carbon Nanotubes written by Zhifeng Ren and published by Springer Science & Business Media. This book was released on 2012-09-05 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a survey of the physics and fabrication of carbon nanotubes and their applications in optics, electronics, chemistry and biotechnology. It focuses on the structural characterization of various carbon nanotubes, fabrication of vertically or parallel aligned carbon nanotubes on substrates or in composites, physical properties for their alignment, and applications of aligned carbon nanotubes in field emission, optical antennas, light transmission, solar cells, chemical devices, bio-devices, and many others. Major fabrication methods are illustrated in detail, particularly the most widely used PECVD growth technique on which various device integration schemes are based, followed by applications such as electrical interconnects, nanodiodes, optical antennas, and nanocoax solar cells, whereas current limitations and challenges are also be discussed to lay the foundation for future developments.
Book Synopsis Nanotube Superfiber Materials by : Mark Schulz
Download or read book Nanotube Superfiber Materials written by Mark Schulz and published by William Andrew. This book was released on 2019-03-29 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotube Superfiber Materials: Science, Manufacturing, Commercialization, Second Edition, helps engineers and entrepreneurs understand the science behind the unique properties of nanotube fiber materials, how to efficiency and safely produce them, and how to transition them into commercial products. Each chapter gives an account of the basic science, manufacturing, properties and commercial potential of a specific nanotube material form and its application. New discoveries and technologies are explained, along with experiences in handing-off the improved materials to industry. This book spans nano-science, nano-manufacturing, and the commercialization of nanotube superfiber materials. As such, it opens up the vast commercial potential of nanotube superfiber materials. Applications for nanotube superfiber materials cut across most of the fields of engineering, including spacecraft, automobiles, drones, hyperloop tracks, water and air filters, infrastructure, wind energy, composites, and medicine where nanotube materials enable development of tiny machines that can work inside our bodies to diagnose and treat disease. Provides up to date information on the applications of nanotube fiber materials Explores both the manufacturing and commercialization of nanotube superfibers Sets out the processes for producing macro-scale materials from carbon nanotubes Describes the unique properties of these materials
Book Synopsis Molecular Jet Growth of Carbon Nanotubes and Dense Vertically Aligned Nanotube Arrays by :
Download or read book Molecular Jet Growth of Carbon Nanotubes and Dense Vertically Aligned Nanotube Arrays written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method of growing a carbon nanotube includes the step of impinging a beam of carbon-containing molecules onto a substrate to grow at least one carbon nanotube on the catalyst surface.
Book Synopsis Nanomedicine Design of Particles, Sensors, Motors, Implants, Robots, and Devices by : Mark J. Schulz
Download or read book Nanomedicine Design of Particles, Sensors, Motors, Implants, Robots, and Devices written by Mark J. Schulz and published by Artech House. This book was released on 2009 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This resource outlines the new tools that are becoming available in nanomedicine. The book presents an integrated set of perspectives that describe where advancements are now and where they should be headed to put nanomedicine devices into applications as quickly as possible
Book Synopsis Organized Networks of Carbon Nanotubes by : K.R.V. Subramanian
Download or read book Organized Networks of Carbon Nanotubes written by K.R.V. Subramanian and published by CRC Press. This book was released on 2020-03-17 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, meshes and networks formed out of multiwalled carbon nanotubes are investigated and analyzed, including their use in niche applications such as electro-optic devices, advanced mechanical, thermal and electrical property enhancement, and gene editing. Different properties of multi-walled carbon nanotubes, including random network formation, ordering the meshes and networks by mechanical agitation and application of an external field, using crystallization and cross-linking induced phase separation in homopolymers-CNT composites are discussed with theoretical analysis. The book is aimed at researchers and graduate students in Electrical Engineering; Materials Science and Engineering; Chemical Engineering and Nanotechnology, Electronic circuit design, manufacturing, and characterization.
Book Synopsis Nanotube Superfiber Materials by : Brad Ruff
Download or read book Nanotube Superfiber Materials written by Brad Ruff and published by Elsevier Inc. Chapters. This book was released on 2013-09-16 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are two ways to manufacture components and devices, the top-down and bottom-up processes. Each process has its advantages and disadvantages. In our group, the bottom-up process was selected to build up electromagnetic devices using nanoscale materials in a series of steps. The design of a lightweight electric motor is described based on using nanoscale materials. Development of the motor is work in progress and various processes and results are described. There are several potential applications for lightweight sustainable electric motors. One billion electric motors are produced in the world each year.
Book Synopsis Spinning Methods for Carbon Nanotube Fibers by : Anli Wang
Download or read book Spinning Methods for Carbon Nanotube Fibers written by Anli Wang and published by . This book was released on 2014 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs) have excellent properties along the tube axis. Although the material has fantastic properties at nano scale, it has proven difficult to assemble CNTs into macro-scale products that retain these properties. This thesis investigates different methods for spinning short CNTs into continuous fibers. The first part of the thesis concentrates on the study of dry spinning techniques. CNT fibers can be produced from spinnable arrays. It is found that CNT length plays an important role in the strength of CNT fibers. However, long CNT arrays are usually not spinnable. Alternative ways to spin long CNTs into fibers were exploited. One way is to assemble these long CNTs with the aid of liquid. The obtained fiber has high electrical conductivity by using annealed CNTs but low strength. Another way explored is to make a long CNT array spinnable by binding the ends of CNT bundles in the array. Besides dry spinning, wet spinning methods were also applied to spin CNT fibers. One way of wet spinning to produce CNT fibers is through coagulation of CNT dispersions in a polymer bath. Parameters involved in the spinning process and post treatments were studied. A possible mechanism of the coagulation was given. Process of another method is to add CNTs in a polymer solution and wet spin the polymer. Polyvinyl alcohol (PVA) is used as the matrix polymer and several baths were investigated. Addition of CNTs in PVA solution improves strength of the fiber when CNT are well dispersed. Properties of these fibers were dominated by the polymer.
Book Synopsis Capillary Densification and Adhesion Tuning of Aligned Carbon Nanotube Arrays for Shape-engineerable Architectures by : Ashley Louise Kaiser
Download or read book Capillary Densification and Adhesion Tuning of Aligned Carbon Nanotube Arrays for Shape-engineerable Architectures written by Ashley Louise Kaiser and published by . This book was released on 2019 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advantaged intrinsic and scale-dependent properties of aligned nanofibers (NFs), such as carbon nanotubes (CNTs), and their ability to be self-assembled by capillary forces motivates their use as shape-engineerable materials. In order to achieve facile and accurate patterning and densification of NFs into new architectures, a mechanistic understanding of the parameters governing NF synthesis, densification, and substrate adhesion is needed. Here, parametric experiments and models are developed to evaluate the scaling of NF-substrate adhesion strength (Fa) of mm-scale tall aligned CNT arrays as a function of CNT growth time (tg), and to control the solvent-based capillary densification of sub-mm-scale tall CNT arrays into cell and pin structures, which have tunable geometries based on CNT height, Fa, and, if used, the as-grown CNT array pattern size (s). One-dimensional scaling relations are presented that accurately predict the morphology of these capillary-densified CNTs exhibiting multiple spatial scales, including long-range cellular networks formed from bulk-scale CNT arrays, and solid, micron-scale pins formed via the densification of patterned CNT arrays below and at the critical s that separates cell vs. pin formation. The effective CNT array elastic modulus (E), and not the orders-of-magnitude higher isolated CNT axial modulus, is found to govern the width, area, wall thickness, and volume fraction of the densified cells and pins. E is about an order of magnitude smaller for pins as compared to cell networks formed from bulk-scale (i.e., non-patterned) CNT arrays, and patterning therefore results in pins with a lower packing density (commensurate with double the wall thickness) and a larger characteristic spacing than bulk cell networks. Further increasing s recovers the bulk-scale cell scaling relations, as the cell geometry plateaus for s>~~ 1000 [mu]m. Additional tuning of the cell network geometry is possible by altering Fa via a simple post-growth annealing step. However, while controlling this adhesion is needed for bulk-scale manufacturing and application-specific performance, experimental and theoretical approaches to date have neglected to address the scaling of Fa with tg, a crucial process parameter governing CNT synthesis, structure, and properties. Here, the non-monotonic scaling of Fa with tg is measured experimentally via uniform tensile CNT array separation from a flat growth substrate and modeled analytically based on atomic and meso-scale CNT evolution using contact mechanics. CNT growth termination is marked by a reduction in CNT number density and a plateau in array height, signifying the transition between two distinct process-structure-property scaling regimes. At this growth termination point, experiments and modeling indicate a one- and two-orders-of-magnitude increase in Fa and E, respectively. Here, the observed increase in CNT wall thickness and sp3 bond character with tg shows that the accumulation of turbostratic carbon species in the CNT array contributes to the evolving mechanical response. Future paths of study are recommended to extend this work towards two-dimensional capillary densification of NF arrays and Fa tunability via post-processing, which would allow for the densification of taller NF arrays (towards mm- and cm-scales) to expand the suitability of these materials for a broader range of applications. Collectively, these results enable the use of capillary densification and tunable NF-substrate adhesion for the design and manufacture of bulk nanoengineered materials and emerging nanoscale technologies.
Book Synopsis Carbon Nanotubes by : Mohamed Berber
Download or read book Carbon Nanotubes written by Mohamed Berber and published by BoD – Books on Demand. This book was released on 2016-07-20 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows the recent advances of the applications of carbon nanotubes (CNTs), in particular, the polymer functionalized carbon nanotubes. It also includes a comprehensive description of carbon nanotubes' preparation, properties, and characterization. Therefore, we have attempted to provide detailed information about the polymer-carbon nanotube composites. With regard to the unique structure and properties of carbon nanotubes, a series of important findings have been reported. The unique properties of carbon nanotubes, including thermal, mechanical, and electrical properties, after polymer functionalization have been documented in detail. This book comprises 18 chapters. The chapters include different applications of polymer functionalization CNTs, e.g. photovoltaic, biomedical, drug delivery, gene delivery, stem cell therapy, thermal therapy, biological detection and imaging, electroanalytical, energy, supercapacitor, and gas sensor applications.
Book Synopsis Processing and Fabrication of Advanced Materials, XVII: Part 8: Polymer-based composites and nano composites: Volume Two by :
Download or read book Processing and Fabrication of Advanced Materials, XVII: Part 8: Polymer-based composites and nano composites: Volume Two written by and published by I. K. International Pvt Ltd. This book was released on 2009 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the Seventeenth International Symposium on Processing and Fabrication of Advanced Material XVII, held at New Delhi during 15-17 December 2008.
