Download or read book Properties of Carbon Nanotubes Probed by Electrostatic Force Microscopy and Raman Spectroscopy written by Mariusz Zdrojek and published by . This book was released on 2006 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les propriétés électroniques de nanotubes de carbone sont étudiées par techniques de microscopie à force électrostatique (EFM) et de spectroscopie Raman. Les propriétés électrostatiques de nanotubes individuels monoparois et multiparois déposés sur des couches minces isolantes sont dans un premier temps mises en évidence par expériences d'injection de charges et mesures EFM. Après injection locale de charges par une pointe EFM, une délocalisation de charges est observée le long des nanotubes, qui correspond aux charges stockées dans les nanotubes et/ou aux charges piégées en surface de la couche d'oxyde le long des nanotubes. Ces deux effets sont dissociés expérimentalement. Les dynamiques de décharge (continue ou abrupte) de nanotubes chargés sont discutées, ainsi que les phénomènes d'exaltation de champ aux extrémités des nanotubes. Dans le cas des nanotubes multiparois, la mesure quantitative des densités linéiques de charge montre que l'électrostatique des nanotubes s'écarte des les lois classiques de l'électrostatique par plus d'un ordre de grandeur. On montre ainsi que les nanotubes multiparois ne se comportent pas comme des capacités cylindriques, mais développent une charge dans leurs parois internes. La spectroscopie Raman a été utilisée dans un second temps comme étude complémentaire des nanotubes, en corrélation avec les expériences EFM. Les spectres Raman permettent de déterminer le diamètre et la puretés des nanotubes, pour des nanotubes individuels, ainsi que pour des cordes ou des fagots de nanotubes, et enfin, d'appréhender le caractère semiconducteur ou métallique des nanotubes dans le cas de nanotubes monoparois.

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.

Download or read book Cin tique de croissance de nanotubes de carbone mono parois et multi parois orient s par proc d plasma written by Aurélien Gohier and published by . This book was released on 2007 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail est consacré à la synthèse de nanotubes de carbone mono-parois et multi-parois orientés par dépôt chimique en phase vapeur assisté par plasma (PECVD). Des études cinétiques ont montré le rôle spécifique du plasma pour la croissance de nanotubes mono paroi (SWNT) ou possédant peu de parois (FWNT). En effet, les phénomènes de gravure physique et chimique, intrinsèques au procédé PECVD, favorisent la croissance des nanotubes multi-parois, structures plus robustes, au profit des SWNT/FWNT. En optimisant les paramètres du plasma (potentiel plasma, mélange des gaz) et le temps de dépôt, la croissance de SWNT/FWNT orientés peut être réalisée de manière contrôlée. De telles structures peuvent être obtenue à basse température (dès 450°C) sur des substrats recouverts d’aluminium. Les mesures d’émission par effet de champ des SWNT/FWNT orientés montrent des tensions de seuil peu élevées (~5 V.μm-1) corrélées avec la morphologie des nanotubes (longueur, rayon). De nombreuses techniques d’analyses ont été utilisées pour étudier la structure des nanotubes aussi bien à l’échelle locale (microscope électronique à transmission, spectroscopie de perte d’énergie) qu’à l’échelle macroscopique (microscope électronique à balayage, spectroscopie de photoélectrons ultraviolets/X, analyse par détection des atomes de recul, spectroscopie Raman).

Download or read book Frontiers of Graphene and Carbon Nanotubes written by Kazuhiko Matsumoto and published by Springer. This book was released on 2015-03-05 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on carbon nanotubes and graphene as representatives of nano-carbon materials, and describes the growth of new technology and applications of new devices. As new devices and as new materials, nano-carbon materials are expected to be world pioneers that could not have been realized with conventional semiconductor materials, and as those that extend the limits of conventional semiconductor performance. This book introduces the latest achievements of nano-carbon devices, processes, and technology growth. It is anticipated that these studies will also be pioneers in the development of future research of nano-carbon devices and materials. This book consists of 18 chapters. Chapters 1 to 8 describe new device applications and new growth methods of graphene, and Chapters 9 to 18, those of carbon nanotubes. It is expected that by increasing the advantages and overcoming the weak points of nanocarbon materials, a new world that cannot be achieved with conventional materials will be greatly expanded. We strongly hope this book contributes to its development.

Download or read book Carbon Nanotubes and Graphene for Photonic Applications written by Shinji Yamashita and published by Elsevier. This book was released on 2013-08-31 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The optical properties of carbon nanotubes and graphene make them potentially suitable for a variety of photonic applications. Carbon nanotubes and graphene for photonic applications explores the properties of these exciting materials and their use across a variety of applications.Part one introduces the fundamental optical properties of carbon nanotubes and graphene before exploring how carbon nanotubes and graphene are synthesised. A further chapter focusses on nonlinearity enhancement and novel preparation approaches for carbon nanotube and graphene photonic devices. Chapters in part two discuss carbon nanotubes and graphene for laser applications and highlight optical gain and lasing in carbon nanotubes, carbon nanotube and graphene-based fiber lasers, carbon-nanotube-based bulk solid-state lasers, electromagnetic nonlinearities in graphene, and carbon nanotube-based nonlinear photonic devices. Finally, part three focusses on carbon-based optoelectronics and includes chapters on carbon nanotube solar cells, a carbon nanotube-based optical platform for biomolecular detection, hybrid carbon nanotube-liquid crystal nanophotonic devices, and quantum light sources based on individual carbon nanotubes.Carbon nanotubes and graphene for photonic applications is a technical resource for materials scientists, electrical engineers working in the photonics and optoelectronics industry and academics and researchers interested in the field. - Covers the properties and fabrication of carbon nanotubes and graphene for photonic applications - Considers the uses of carbon nanotubes and graphene for laser applications - Explores numerous carbon-based light emitters and detectors

Download or read book Investigations of Plasma enhanced CVD Growth of Carbon Nanotubes and Potential Applications written by Martin Jönsson and published by Goteborg University. This book was released on 2007 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Nanotubes in Drug and Gene Delivery written by M Karimi and published by Myprint. This book was released on 2017-10-25 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Making and Exploiting Fullerenes Graphene and Carbon Nanotubes written by Massimo Marcaccio and published by . This book was released on 2014-08-31 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Nanotubes as Nanodelivery Systems written by Melvin Choon Giap Lim and published by Springer. This book was released on 2013-05-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book showcases the application of carbon nanotubes as nanodelivery systems for copper atoms, using molecular dynamics simulations as a means of investigation. The nanodelivery system of the carbon nanotube presents the possible usage of the carbon structure in many areas in the future. This book is comprehensive and informative, and serves as a guide for any reader who wishes to perform a molecular dynamics simulation of his own and to conduct an analytical study of a molecular system.

Download or read book Transport and Deposition of Functionalized Multi walled Carbon Nanotubes in Porous Media written by Daniela Kasel and published by . This book was released on 2013 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synth se par proc d plasma et caract risation de nanotubes written by Aurelien Tailleur and published by . This book was released on 2011 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: L’objectif principal de ce travail de thèse a été l’optimisation de la synthèse par méthode plasma de tapis de nanotubes de carbone multi-parois orientés. Pour cela l’influence des différents paramètres plasma a été évaluée d’une part par l’analyse structurale des tapis de nanotubes synthétisés, réalisée principalement par des observations au MEB et au MET et d’autre part par l’analyse du plasma, réalisée principalement par spectrométrie de masse. Cette étude a notamment permis de mieux comprendre les mécanismes de croissance des nanotubes de carbone multi-parois ainsi que les possibilités et limitations liées à notre procédé de synthèse, en l’occurrence l’ECR-PECVD (Electron Cyclotron Resonance – Plasma Enhanced Chemical Vapor Deposition). Après quoi différentes applications potentielles des nanotubes de carbone multi-parois, nécessitant leur synthèse sur différents substrats ont été étudiées. Une première étude a été menée sur l’utilisation de nanotubes de carbone comme interconnexion en remplacement du cuivre pour la microélectronique, étude menée dans le cadre de l’ANR « Nanoréseaux ». Une seconde étude fut menée sur l’utilisation de tapis de nanotubes de carbone en tant que transducteur pour la réalisation de biocapteurs électrochimiques, étude menée dans le cadre du projet région « Biocap’Loire ». Une troisième étude fut menée sur l’utilisation de tapis de nanotubes de carbone encapsulés par du nitrure d’aluminium pour la réalisation d’évacuateurs thermiques destinés à la microélectronique, étude menée dans le cadre de l’ANR « Nanothermic ». Enfin la possibilité de synthétiser des nanotubes de nitrure de bore à l’aide de notre procédé a été étudiée et a notamment permis d’identifier les limitations et les voies d’amélioration de notre procédé pour la synthèse de nanotubes de nitrure de bore.

Download or read book ZnO Thin Films written by Paolo Mele and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc oxide (ZnO) is an n-type semiconductor with versatile applications such as optical devices in ultraviolet region, piezoelectric transducers, transparent electrode for solar cells and gas sensors. This book "ZnO Thin Films: Properties, Performance and Applications" gives a deep insight in the intriguing science of zinc oxide thin films. It is devoted to cover the most recent advances and reviews the state of the art of ZnO thin films applications involving energy harvesting, microelectronics, magnetic devices, photocatalysis, photovoltaics, optics, thermoelectricity, piezoelectricity, electrochemistry, temperature sensing. It serves as a fundamental information source on the techniques and methodologies involved in zinc oxide thin films growth, characterization, post-deposition plasma treatments and device processing. This book will be invaluable to the experts to consolidate their knowledge and provide insight and inspiration to beginners wishing to learn about zinc oxide thin films.

Download or read book Practical Surface Analysis Auger and X ray Photoelectron Spectroscopy written by D. Briggs and published by Wiley. This book was released on 1996-07-25 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an updated manual covering the theory and practice of X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES) techniques for surface analysis. Topics covered include historical development; all relevant theory for data interpretation and a description of instrumentation; the major fields of applications, such as metallurgy, polymers, semiconductors, and corrosion science; catalysis; and many appendices of essential data for day-to-day use. This new edition also takes into account improvements in equipment, experimental procedures and data interpretation over the last seven years.

Download or read book Vertebrate Skeletal Histology and Paleohistology written by Vivian de Buffrénil and published by CRC Press. This book was released on 2021-06-24 with total page 1882 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vertebrate Skeletal Histology and Paleohistology summarizes decades of research into the biology and biological meaning of hard tissues, in both living and extinct vertebrates. In addition to outlining anatomical diversity, it provides fundamental phylogenetic and evolutionary contexts for interpretation. An international team of leading authorities review the impact of ontogeny, mechanics, and environment in relation to bone and dental tissues. Synthesizing current advances in the biological problems of growth, metabolism, evolution, ecology, and behavior, this comprehensive and authoritative volume is built upon a foundation of concepts and technology generated over the past fifty years.

Download or read book Methods in Paleontology written by Charles Lewis Camp and published by . This book was released on 1937 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Long Eighth Century written by Inge Lyse Hansen and published by BRILL. This book was released on 2021-11-22 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eighth century has not been analysed as a period of economic history since the 1930s, and is ripe for a comprehensive reassessment. The twelve papers in this book range over the whole of Europe and the Mediterranean from Denmark to Palestine, covering Francia, Italy and Byzantium on the way. They examine regional economies and associated political structures, that is to say the whole network of production, exchange, and social relations in each area. They offer both authoritative overviews of current work and new and original work. As a whole, they show how the eighth century was the first century when the post-Roman world can clearly be seen to have emerged, in the regional economies of each part of Europe.

Download or read book Commentary on the Apocalypse written by Oecumenius (Bishop of Tricca.) and published by CUA Press. This book was released on 2006-03 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: No description available