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Author : Naiqin Zhao
Publisher :
ISBN 13 : 9789533074979
Total Pages : pages
Book Rating : 4.0/5 (749 download)
Download or read book Direct Growth of Carbon Nanotubes on Metal Supports by Chemical Vapor Deposition written by Naiqin Zhao and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J.L. Figueiredo
Publisher : Springer Science & Business Media
ISBN 13 : 9401568472
Total Pages : 577 pages
Book Rating : 4.4/5 (15 download)
Download or read book Carbon Fibers Filaments and Composites written by J.L. Figueiredo and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional synthetic materials, like metals, ceramics or glass, are usually isotropic substances, and their suitability for structural applications is achieved by morphological design and combination in the macroscopic scale. However, in modem engineering this is often not acceptable. As an alternative, the use of non-homogeneous, anisotropic materials, with significant stiffness and strength only in the directions these mechanical properties are really needed, can lead to enormous material (and weight) savings. This is the case of multiphase systems called composite materials. In these composites, different material parts are added and arranged geometrically, under clearly designed and controlled conditions. Usually, a structure of fibers provides strength and stiffness and a matrix helds them together, whilst providing the geometric form. Carbon fibers are among the high-performance fibers employed in these advanced structural composites, which are profoundly changing many of today's high technology industries. New research and development challenges in this area include upgrading the manufacturing process of fibers and composites, in order to improve characteristics and reduce costs, and modifying the interfacial properties between fibers and matrix, to guarantee better mechanical properties. The interdisciplinary nature of this "new frontier" is obvious, involving chemistry, materials science, chemical and mechanical engineering. Other topics, which more often are treated separately, are also important for the understanding of the processes of fiber production. Carbon filaments is one such topic, as the study of their mechanisms of nucleation and growth is clearly quite relevant to the production of vapour-grown carbon fibers.
Author : Gulfem Ipek Nasuf
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (311 download)
Download or read book Carbon Nanotube Growth on Tool Steel Substrates by Thermal Chemical Vapor Deposition (CVD) written by Gulfem Ipek Nasuf and published by . This book was released on 2008 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs) grown over metallic surfaces by chemical vapor deposition dramatically improve performances of these materials in case of utilizing them as electrodes or tribologically active materials. Proper adherence is necessitated for the purpose of lowering the contact resistance and increasing the mechanical robustness between the metallic surface and carbon nanotubes. This is attained via the direct growth of carbon nanotubes on the surface. However, a better understanding of the elements affecting the growth is essential to control the CNT density and alignment. In this study, comprehension of the effect of substrate surface properties and thermal chemical vapor deposition process parameters is achieved by observing the effectiveness of various pretreatment methods applied onto to modify the surface texture of different tool steel substrates and distinct synthesis conditions. Possible growth mechanism of CNTs on metallic substrates is discussed based on scanning electron microscope (SEM) and transmission electron microscope (TEM) observations. We propose a new treatment method for metallic substrates which uses hydrogen gas. This method causes the formation of dense and small-diameter nanotubes independent of the chemical composition of the metallic substrate.
Author : Yan Li
Publisher : Springer
ISBN 13 : 3030127001
Total Pages : 333 pages
Book Rating : 4.0/5 (31 download)
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.
Author : Christian Peter Deck
Publisher :
ISBN 13 :
Total Pages : 522 pages
Book Rating : 4.:/5 (318 download)
Download or read book Growth and Characterization of Carbon Nanotubes Grown Via Chemical Vapor Deposition written by Christian Peter Deck and published by . This book was released on 2004 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct Growth of Carbon Nanotubes on Inconel Sheets Using Hot Filament Chemical Vapor Deposition written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hosam El-Din Saleh
Publisher : BoD – Books on Demand
ISBN 13 : 1789844010
Total Pages : 250 pages
Book Rating : 4.7/5 (898 download)
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.
Author : William Murray Whyte
Publisher :
ISBN 13 :
Total Pages : 288 pages
Book Rating : 4.:/5 (765 download)
Download or read book Investigation Into the Growth Mechanisms of Carbon Nanotubes Formed Using Thermal Chemical Vapour Deposition written by William Murray Whyte and published by . This book was released on 2011 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhifeng Ren
Publisher : Springer Science & Business Media
ISBN 13 : 3642304907
Total Pages : 310 pages
Book Rating : 4.6/5 (423 download)
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.
Author : Ayako Nakagawa
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (239 download)
Download or read book Catalytic Chemical Vapor Deposition Synthesis of Carbon Nanotubes from Methane on SiO Supported Fe and Fe-Ni Catalysts written by Ayako Nakagawa and published by . This book was released on 2009 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Influences of operating conditions on the production of carbon nanotubes (CNTs) were studied using Fe and Fe-Ni bimetallic catalysts supported on silicon monoxide (SiO). The catalysts were prepared in three steps: (1) impregnation of SiO powders with ferric nitride or combinations of ferric and nickel nitrides, (2) oxidation of nitrides in an air stream, and (3) grinding the powders obtained. CNTs were successfully synthesized by catalytic CVD using NH3/CH4 mixtures in a horizontal tubular flow reactor. The following process parameters were varied to investigate their effects on the growth rates of CNTs. The morphologies of catalysts and product CNTs were observed by scanning electron microscope (SEM). The particle size of SiO, metal composition, metal loading, temperature for catalyst oxidation, extent of grinding of catalysts, NH3 pretreatment time, reaction temperature for CNT growth, reaction time, and NH3/CH4 feed ratio. Two different average sizes of SiO particles, 8 [mu]m and 44 [mu]m, were compared based on the growth of CNTs in 5 min. Catalysts supported on 44 [mu]m average sized SiO particles demonstrated higher yields when they were not pretreated in an NH3 stream. When 1 wt% Fe was loaded, aligned CNTs were formed, and a highest growth rate per unit mass of catalyst was observed. The range of oxidation temperature to achieve highest catalyst activities depended on metals and metal contents: 600 - 750°C for 1 wt% Fe, 450 - 600°C for 3 wt% Fe, and 750 - 900°C for Fe-Ni. Grinding catalysts for at least 3 minutes increased the growth rate of CNTs by approximately 40 percent. The growth of CNTs was enhanced when no NH3 pretreatment of catalysts was carried out, regardless of metals and metal contents. However, CNTs did not grow appreciably from methane without ammonia. An NH3/CH4 feed ratio of 0.15 - 0.25 was observed to yield highest growth rates. The reaction temperature to achieve highest CNT growth rates was found to be in the range between 990 and 1000 °C. The growth of CNTs was not linear but decreased with reaction time.
Author : Carlos Lodeiro
Publisher : Frontiers Media SA
ISBN 13 : 288945987X
Total Pages : 121 pages
Book Rating : 4.8/5 (894 download)
Download or read book Rational Design of Multi-Functional Nanomaterials written by Carlos Lodeiro and published by Frontiers Media SA. This book was released on 2019-08-16 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most important issues, when a nanomaterial is designed, is to control the synthetic pathways to ensure the final desired product. A combination of dry and wet procedures, as well as chemical and physical methodologies, it is possible to successfully prepare new multifunctional nanomaterials, often as a result of multidisciplinary cooperation between chemists, physics, biologist, physicians, material engineers, etc. Drug delivery, environmental detection of contaminants, and many industrial applications directly rely on properties such as water solubility, permeability, cell penetration, shape control, and size of the monodispersed nanoparticle, among others. Functionalized nanomaterials play a crucial role in modern research areas because of their unique physical and chemical properties, explored in many different fields including medicine and biology, new materials, pharmacology as drug delivery systems, and in environmental analysis for sensing new contaminants, among other technical and industrial applications. For future technological applications, the rational design of these multifunctional nanomaterials is critical, and often depends on the excellent control of the organic and inorganic chemical reactions involved during production. The success of their applications relies directly on the photophysical properties created in the final material, including the emission of light or colorimetric responses, water solubility, selectivity, sensitivity, stability, etc. For example, from an analytical point of view, the detection and quantification of emerging analytes is directly dependent on the selectivity and sensitivity showed by the material in a complex media.
Author : Boris S. Bokstein
Publisher :
ISBN 13 : 0198528043
Total Pages : 341 pages
Book Rating : 4.1/5 (985 download)
Download or read book Thermodynamics and Kinetics in Materials Science written by Boris S. Bokstein and published by . This book was released on 2005-06-30 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM contains ... "computer tests and laboratories."--CD-ROM label.
Author : Jean-Charles Arnault
Publisher : John Wiley & Sons
ISBN 13 : 1119429382
Total Pages : 320 pages
Book Rating : 4.1/5 (194 download)
Download or read book Synthesis and Applications of Nanocarbons written by Jean-Charles Arnault and published by John Wiley & Sons. This book was released on 2020-09-21 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A crucial overview of the cutting-edge in nanocarbon research and applications In Synthesis and Applications of Nanocarbons, the distinguished authors have set out to discuss fundamental topics, synthetic approaches, materials challenges, and various applications of this rapidly developing technology. Nanocarbons have recently emerged as a promising material for chemical, energy, environmental, and medical applications because of their unique chemical properties and their rich surface chemistries. This book is the latest entry in the Wiley book series Nanocarbon Chemistry and Interfaces and seeks to comprehensively address many of the newly surfacing areas of controversy and development in the field. This book introduces foundational concepts in nanocarbon technology, hybrids, and applications, while also covering the most recent and cutting-edge developments in this area of study. Synthesis and Applications of Nanocarbons addresses new discoveries in the field, including: · Nanodiamonds · Onion-like carbons · Carbon nanotubes · Fullerenes · Carbon dots · Carbon fibers · Graphene · Aerographite This book provides a transversal view of the various nanocarbon materials and hybrids and helps to share knowledge between the communities of each material and hybrid type.
Author : Saumya Kothari
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (548 download)
Download or read book Chemical Vapor Deposition Growth of Carbon Nanotubes written by Saumya Kothari and published by . This book was released on 2003 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ajay Kumar Mishra
Publisher : Nova Science Publishers
ISBN 13 : 9781620819142
Total Pages : 0 pages
Book Rating : 4.8/5 (191 download)
Download or read book Carbon Nanotubes written by Ajay Kumar Mishra and published by Nova Science Publishers. This book was released on 2012-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes possess unusual fascinating properties which have attracted the scientific world. This book covers a very wide domain of research and development where the synthesis and properties of carbon nanotubes are discussed. This book describes the carbon nanotube general introduction, various synthesis procedures and properties. This book is going to be beneficial to the researchers who are working for their postgraduate degree in nanomaterials and nanotechnology. This book also provides a platform for all the academics and researchers as it covers a vast background for the recent literature, abbreviations, and summaries. This book will be worth reading for the researchers who are more interested in the general overview of carbon nanotubes, fundamentals concepts and various synthetic procedures in the multidisciplinary areas. This book contains the fundamental knowledge with the recent advancements for the research and development in the field of nanomaterials and nanotechnology.
Download or read book زمينه جامعه شناسى written by and published by . This book was released on 1957 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rafael Vargas-Bernal
Publisher : BoD – Books on Demand
ISBN 13 : 1838803378
Total Pages : 150 pages
Book Rating : 4.8/5 (388 download)
Download or read book Hybrid Nanomaterials written by Rafael Vargas-Bernal and published by BoD – Books on Demand. This book was released on 2020-06-10 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the hottest research topics today are hybrid nanomaterials and flexible electronics. As such, this book covers both topics with chapters written by experts from across the globe. Chapters address hybrid nanomaterials, electronic transport in black phosphorus, three-dimensional nanocarbon hybrids, hybrid ion exchangers, pressure-sensitive adhesives for flexible electronics, simulation and modeling of transistors, smart manufacturing technologies, and inorganic semiconductors.
