Process Variables Controlling Consistency Of Carbon Nanotube Forest Growth

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Process Variables Controlling Consistency of Carbon Nanotube Forest Growth

Author : Hanna Megumi Vincent
Publisher :
ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Process Variables Controlling Consistency of Carbon Nanotube Forest Growth by : Hanna Megumi Vincent

Download or read book Process Variables Controlling Consistency of Carbon Nanotube Forest Growth written by Hanna Megumi Vincent and published by . This book was released on 2014 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aligned arrays of carbon nanotubes (A-CNTs), called CNT forests, are the precursor for controlled-morphology macroscopic nanocomposites and nanoengineered composites due to theirscale-dependent, tunable physicall properties. Applications include polymer and ceramic matrix nanocomposites (PNCs and CMNCs), nanostiching as laminate interply reinforcement, as well as in supercapacitors, MEMS devices and electrodes for ion actuators and sensors. A key component of manufacturing materials comprised of A-CNTs is controlling the morphology and geometry of the CNT forest. Current laboratory findings show significant variability in CNT forest growth characteristics, and an experimental study was conducted to better understand and control for the observd process variations. An exploratory investigation of growth parameters allowed for a local optimization of growth temperature and hydrocarbon flow rates, as well as an acceptable range of sample placement in the CVD furnace to achieve ~1mm tall CNT forests. Results from this investigation led to the conclusion that the significant inconsistencies between consecutive growths must be due to factors out of direct control, mainly humidity. A new system is being developed to better control for and monitor water in the furnace. A second investigation focused on post growth cool down effects, and the possible shortening (deforestation) of CNTs at high temperatures without a renewing source of the carbon precursor. Deforestation conditions did not lead to CNT shortening.

Mason County, Kentucky Court Records

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (478 download)

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Book Synopsis Mason County, Kentucky Court Records by :

Download or read book Mason County, Kentucky Court Records written by and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Chemical Vapour Deposition Growth of Carbon Nanotube Forests: Kinetics, Morphology, Composition, and Their Mechanisms

Author : Phillip A. Vinten
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (871 download)

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Book Synopsis Chemical Vapour Deposition Growth of Carbon Nanotube Forests: Kinetics, Morphology, Composition, and Their Mechanisms by : Phillip A. Vinten

Download or read book Chemical Vapour Deposition Growth of Carbon Nanotube Forests: Kinetics, Morphology, Composition, and Their Mechanisms written by Phillip A. Vinten and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis analyzes the chemical vapour deposition (CVD) growth of vertically aligned carbon nanotube (CNT) forests in order to understand how CNT forests grow, why they stop growing, and how to control the properties of the synthesized CNTs. In situ kinetics data of the growth of CNT forests are gathered by in situ optical microscopy. The overall morphology of the forests and the characteristics of the individual CNTs in the forests are investigated using scanning electron microscopy and Raman spectroscopy. The in situ data show that forest growth and termination are activated processes (with activation energies on the order of 1 eV), suggesting a possible chemical origin. The activation energy changes at a critical temperature for ethanol CVD (approximately 870°C). These activation energies and critical temperature are also seen in the temperature dependence of several important characteristics of the CNTs, including the defect density as determined by Raman spectroscopy. This observation is seen across several CVD processes and suggests a mechanism of defect healing. The CNT diameter also depends on the growth temperature. In this thesis, a thermodynamic model is proposed. This model predicts a temperature and pressure dependence of the CNT diameter from the thermodynamics of the synthesis reaction and the effect of strain on the enthalpy of formation of CNTs. The forest morphology suggests significant interaction between the constituent CNTs. These interactions may play a role in termination. The morphology, in particular a microscale rippling feature that is capable of diffracting light, suggest a non-uniform growth rate across the forest. A gas phase diffusion model predicts a non-uniform distribution of the source gas. This gas phase diffusion is suggested as a possible explanation for the non-uniform growth rate. The gas phase diffusion is important because growth by acetylene CVD is found to be very efficient (approximately 30% of the acetylene is converted to CNTs). It is seen that multiple mechanisms are active during CNT growth. The results of this thesis provide insight into both the basic understanding of the microscopic processes involved in CVD growth and how to control the properties of the synthesized CNTs.

Mechanics of Composite and Multi-functional Materials, Volume 6

Author : Piyush R Thakre
Publisher : Springer
ISBN 13 : 3319634089
Total Pages : 219 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Mechanics of Composite and Multi-functional Materials, Volume 6 by : Piyush R Thakre

Download or read book Mechanics of Composite and Multi-functional Materials, Volume 6 written by Piyush R Thakre and published by Springer. This book was released on 2017-11-08 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics of Composite, Hybrid, and Multifunctional Materials, Volume 6 of the Proceedings of the 2017 SEM Annual Conference & Exposition on Experimental and Applied Mechanics, the sixth volume of nine from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on a wide range of areas, including: Nano & Particulate Composites Recycled Constituent Composites Hybrid Composites Multifunctional Materials Fracture & Fatigue of Composites Novel Developments in Composites Mechanics of Composites

Advanced Multifunctional Lightweight Aerostructures

Author : Kamran Behdinan
Publisher : John Wiley & Sons
ISBN 13 : 1119756723
Total Pages : 256 pages
Book Rating : 4.1/5 (197 download)

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Book Synopsis Advanced Multifunctional Lightweight Aerostructures by : Kamran Behdinan

Download or read book Advanced Multifunctional Lightweight Aerostructures written by Kamran Behdinan and published by John Wiley & Sons. This book was released on 2021-01-29 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offers a review of the newest methodologies for the characterization and modelling of lightweight materials and structures Advances in Multifunctional Lightweight Structures offers a text that provides and in-depth analyses of the thermal, electrical and mechanical responses of multi-functional lightweight structures. The authors, noted experts on the topic, address the most recent and innovative methodologies for the characterization and modelling of lightweight materials and discuss various shell and plate theories. They present multifunctional materials and structures and offer detailed descriptions of the complex modelling of these structures. The text is divided into three sections that demonstrate a keen understanding and awareness for multi-functional lightweight structures by taking a unique approach. The authors explore multi-disciplinary modelling and characterization alongside benchmark problems and applications, topics that are rarely approached in this field. This important book: • Offers an analyses of the thermal, electrical and mechanical responses of multi-functional lightweight structures • Covers innovative methodologies for the characterization and modelling of lightweight materials and structures • Presents a characterization of a wide variety of novel materials • Considers multifunctional novel structures with potential applications in different high-tech industries • Includes efficient and highly accurate methodologies Written for professionals, engineers and researchers in industrial and other specialized research institutions, Advances in Multifunctional Lightweight Structures offers a much needed text to the design practices of existing engineering building services and how these methods combine with recent developments.

Carbon Allotropes: Metal-Complex Chemistry, Properties and Applications

Author : Boris Ildusovich Kharisov
Publisher : Springer
ISBN 13 : 3030035050
Total Pages : 790 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Carbon Allotropes: Metal-Complex Chemistry, Properties and Applications by : Boris Ildusovich Kharisov

Download or read book Carbon Allotropes: Metal-Complex Chemistry, Properties and Applications written by Boris Ildusovich Kharisov and published by Springer. This book was released on 2019-01-02 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a detailed description of metal-complex functionalized carbon allotrope forms, including classic (such as graphite), rare (such as M- or T-carbon), and nanoforms (such as carbon nanotubes, nanodiamonds, etc.). Filling a void in the nanotechnology literature, the book presents chapters generalizing the synthesis, structure, properties, and applications of all known carbon allotropes. Metal-complex composites of carbons are described, along with several examples of their preparation and characterization, soluble metal-complex carbon composites, cost-benefit data, metal complexes as precursors of carbon allotropes, and applications. A lab manual on the synthesis and characterization of carbon allotropes and their metal-complex composites is included. Provides a complete description of all carbon allotropes, both classic and rare, as well as carbon nanostructures and their metal-complex composites; Contains a laboratory manual of experiments on the synthesis and characterization of metal-complex carbon composites; Discusses applications in diverse fields, such as catalysis on supporting materials, water treatment, sensors, drug delivery, and devices.

Single-Walled Carbon Nanotubes

Author : Yan Li
Publisher : Springer
ISBN 13 : 3030127001
Total Pages : 333 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Single-Walled Carbon Nanotubes by : Yan Li

Download or read book Single-Walled Carbon Nanotubes written by Yan Li and published by Springer. This book was released on 2019-05-16 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

Carbon Nanomaterials for Agri-Food and Environmental Applications

Author : Kamel Ahmed Abd-Elsalam
Publisher : Micro & Nano Technologies
ISBN 13 : 0128197862
Total Pages : 652 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Carbon Nanomaterials for Agri-Food and Environmental Applications by : Kamel Ahmed Abd-Elsalam

Download or read book Carbon Nanomaterials for Agri-Food and Environmental Applications written by Kamel Ahmed Abd-Elsalam and published by Micro & Nano Technologies. This book was released on 2019-11 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanomaterials for Agri-food and Environmental Applications discusses the characterization, processing and applications of carbon-based nanostructured materials in the agricultural and environmental sectors. Sections discuss the synthesis and characterization of carbon nanotubes, the technological developments in environmental applications of carbon-based nanomaterials, and agri-food applications. The book also covers the toxic effects of engineered carbon nanoparticles on the environment, and in plants and animals. Finally, quality control and risk management are addressed to assess health and environmental risks. This is an applicable book for graduate students, researchers and those in industrial sectors of science and technology who want to learn more about carbon nanomaterials. Compares a range of carbon-based nanomaterials, showing how they are used for a range of agricultural and environmental applications Discusses the challenges and toxicity of different types of carbon-based nanomaterials for environmental and agricultural applications Explores when different classes of nanomaterial should be used in different environments

Carbon Nanotube-Polymer Composites

Author : Dimitrios Tasis
Publisher : Royal Society of Chemistry
ISBN 13 : 1782625828
Total Pages : 293 pages
Book Rating : 4.7/5 (826 download)

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Book Synopsis Carbon Nanotube-Polymer Composites by : Dimitrios Tasis

Download or read book Carbon Nanotube-Polymer Composites written by Dimitrios Tasis and published by Royal Society of Chemistry. This book was released on 2015-11-09 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemically-modified carbon nanotubes (CNTs) exhibit a wide range of physical and chemical properties which makes them an attractive starting material for the preparation of super-strong and highly-conductive fibres and films. Much information is available across the primary literature, making it difficult to obtain an overall picture of the state-of-the-art. This volume brings together some of the leading researchers in the field from across the globe to present the potential these materials have, not only in developing and characterising novel materials but also the devices which can be fabricated from them. Topics featured in the book include Raman characterisation, industrial polymer materials, actuators and sensors and polymer reinforcement, with chapters prepared by highly-cited authors from across the globe. A valuable handbook for any academic or industrial laboratory, this book will appeal to newcomers to the field and established researchers alike.

Nanotube Superfiber Materials

Author : Mark Schulz
Publisher : William Andrew
ISBN 13 : 1455778648
Total Pages : 861 pages
Book Rating : 4.4/5 (557 download)

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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

Perspective of Carbon Nanotubes

Author : Hosam El-Din Saleh
Publisher : BoD – Books on Demand
ISBN 13 : 1789844010
Total Pages : 250 pages
Book Rating : 4.7/5 (898 download)

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Book Synopsis Perspective of Carbon Nanotubes by : Hosam El-Din Saleh

Download or read book Perspective of Carbon Nanotubes written by Hosam El-Din Saleh and published by BoD – Books on Demand. This book was released on 2019-12-11 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes belong to new nanomaterials and have been known for almost 20 years, but their history is somewhat lengthier. They have been identified as promising candidates for various applications.High-temperature preparation techniques are conventional techniques for the synthesis of carbon nanotubes using arc discharge or laser ablation, but today these methods are being replaced by low-temperature vapor deposition techniques, since orientation, alignment, nanotube length, diameter, purity, and density of carbon nanotubes can be precisely controlled. The synthesis of carbon nanotubes by chemical vapor deposition on catalyst arrays leads to nanotube models grown from specific sites on surfaces. The controlled synthesis of nanotubes opens up interesting possibilities in nanoscience and nanotechnologies, including electrical, mechanical and electromechanical properties and devices, chemical functionalization, surface chemistry and photochemistry, molecular sensors, and interfacing with moderate biological systems.Carbon nanotubes are used in many applications due to their unique electrical, mechanical, optical, thermal, and other properties. Conductive and high-strength composite materials, energy saving and energy conversion devices, sensors, visualization of field emissions and sources of radiation, means for storing hydrogen, and nanoscale semiconductor devices, probes, and interconnections are some of the many applications of carbon nanotubes.

Springer Handbook of Nanomaterials

Author : Robert Vajtai
Publisher : Springer Science & Business Media
ISBN 13 : 364220595X
Total Pages : 1234 pages
Book Rating : 4.6/5 (422 download)

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Book Synopsis Springer Handbook of Nanomaterials by : Robert Vajtai

Download or read book Springer Handbook of Nanomaterials written by Robert Vajtai and published by Springer Science & Business Media. This book was released on 2013-08-20 with total page 1234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Springer Handbook of Nanomaterials covers the description of materials which have dimension on the "nanoscale". The description of the nanomaterials in this Handbook follows the thorough but concise explanation of the synergy of structure, properties, processing and applications of the given material. The Handbook mainly describes materials in their solid phase; exceptions might be e.g. small sized liquid aerosols or gas bubbles in liquids. The materials are organized by their dimensionality. Zero dimensional structures collect clusters, nanoparticles and quantum dots, one dimensional are nanowires and nanotubes, while two dimensional are represented by thin films and surfaces. The chapters in these larger topics are written on a specific materials and dimensionality combination, e.g. ceramic nanowires. Chapters are authored by well-established and well-known scientists of the particular field. They have measurable part of publications and an important role in establishing new knowledge of the particular field.

Evolution of Phase Transitions

Author : Rohan Abeyaratne
Publisher : Cambridge University Press
ISBN 13 : 9781139449243
Total Pages : 272 pages
Book Rating : 4.4/5 (492 download)

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Book Synopsis Evolution of Phase Transitions by : Rohan Abeyaratne

Download or read book Evolution of Phase Transitions written by Rohan Abeyaratne and published by Cambridge University Press. This book was released on 2006-05-08 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2006 work began with the author's exploration of the applicability of the finite deformation theory of elasticity when various standard assumptions such as convexity of various energies or ellipticity of the field equations of equilibrium are relinquished. The finite deformation theory of elasticity turns out to be a natural vehicle for the study of phase transitions in solids where thermal effects can be neglected. This text will be of interest to those interested in the development and application of continuum-mechanical models that describe the macroscopic response of materials capable of undergoing stress- or temperature-induced transitions between two solid phases. The focus is on the evolution of phase transitions which may be either dynamic or quasi-static, controlled by a kinetic relation which in the framework of classical thermomechanics represents information that is supplementary to the usual balance principles and constitutive laws of conventional theory.

Multifunctional Hybrid Nanomaterials for Sustainable Agri-food and Ecosystems

Author : Kamel A. Abd-Elsalam
Publisher : Elsevier
ISBN 13 : 012821354X
Total Pages : 730 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Multifunctional Hybrid Nanomaterials for Sustainable Agri-food and Ecosystems by : Kamel A. Abd-Elsalam

Download or read book Multifunctional Hybrid Nanomaterials for Sustainable Agri-food and Ecosystems written by Kamel A. Abd-Elsalam and published by Elsevier. This book was released on 2020-04-14 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multifunctional Hybrid Nanomaterials for Sustainable Agrifood and Ecosystems shows how hybrid nanomaterials (HNMs) are being used to enhance agriculture, food and environmental science. The book discusses the synthesis and characterization of HNMs before exploring agrifoods and environmental functions. It shows how novel HNMs are being used for the detection and separation of heavy metal ions, for destroying and sensing of insecticides, in managed release fertilizer and pesticide formulations, plant protection, plant promotions, purification, detection, and to control mycotoxins. Further, the book describes the use of silica-based total nanosystems, carbon nanotubes, nanocellulose-based, and polymer nanohybrids for agricultural and biological applications. This book is an important reference source for materials scientists, engineers and food scientists who want to gain a greater understanding on how multifunctional nanomaterials are being used for a range of agricultural and environmental applications. Outlines the major nanomaterial types that are being used in agriculture Explains why the properties of multifunctional nanomaterials are particularly efficient for use in agriculture Assesses the major challenges of using multifunctional nanomaterials on an industrial scale

Carbon Nanotubes

Author : M. Meyyappan
Publisher : CRC Press
ISBN 13 : 0203494938
Total Pages : 306 pages
Book Rating : 4.2/5 (34 download)

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Book Synopsis Carbon Nanotubes by : M. Meyyappan

Download or read book Carbon Nanotubes written by M. Meyyappan and published by CRC Press. This book was released on 2004-07-28 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes, with their extraordinary mechanical and unique electronic properties, have garnered much attention in the past five years. With a broad range of potential applications including nanoelectronics, composites, chemical sensors, biosensors, microscopy, nanoelectromechanical systems, and many more, the scientific community is more moti

Carbon Nanotubes

Author : M. Endo
Publisher : Elsevier
ISBN 13 : 008054553X
Total Pages : 200 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Carbon Nanotubes by : M. Endo

Download or read book Carbon Nanotubes written by M. Endo and published by Elsevier. This book was released on 2013-10-22 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes have been studied extensively in relation to fullerenes, and together with fullerenes have opened a new science and technology field on nano scale materials. A whole range of issues from the preparation, structure, properties and observation of quantum effects in carbon nanotubes in comparison with 0-D fullerenes are discussed. In addition, complementary reviews on carbon nanoparticles such as carbon nano-capsules, onion-like graphite particles and metal-coated fullerenes are covered. This book aims to cover recent research and development in this area, and so provide a convenient reference tool for all researchers in this field. It is also hoped that this book can serve to stimulate future work on carbon nanotubes.

Spark Plasma Sintering of Materials

Author : Pasquale Cavaliere
Publisher : Springer
ISBN 13 : 303005327X
Total Pages : 781 pages
Book Rating : 4.0/5 (3 download)

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Book Synopsis Spark Plasma Sintering of Materials by : Pasquale Cavaliere

Download or read book Spark Plasma Sintering of Materials written by Pasquale Cavaliere and published by Springer. This book was released on 2019-02-18 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes spark plasma sintering (SPS) in depth. It addresses fundamentals and material-specific considerations, techniques, and applications across a broad spectrum of materials. The book highlights methods used to consolidate metallic or ceramic particles in very short times. It highlights the production of complex alloys and metal matrix composites with enhanced mechanical and wear properties. Emphasis is placed on the speed of the sintering processes, uniformity in product microstructure and properties, reduced grain growth, the compaction and sintering of materials in one processing step, various materials processing, and high energy efficiency. Current and potential applications in space science and aeronautics, automation, mechanical engineering, and biomedicine are addressed throughout the book.