Download or read book Carbon Nanotubes written by Jose Mauricio Marulanda and published by IntechOpen. This book was released on 2011-08-01 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs), discovered in 1991, have been a subject of intensive research for a wide range of applications. In the past decades, although carbon nanotubes have undergone massive research, considering the success of silicon, it has, nonetheless, been difficult to appreciate the potential influence of carbon nanotubes in current technology. The main objective of this book is therefore to give a wide variety of possible applications of carbon nanotubes in many industries related to electron device technology. This should allow the user to better appreciate the potential of these innovating nanometer sized materials. Readers of this book should have a good background on electron devices and semiconductor device physics as this book presents excellent results on possible device applications of carbon nanotubes. This book begins with an analysis on fabrication techniques, followed by a study on current models, and it presents a significant amount of work on different devices and applications available to current technology.
Download or read book Carbon nanotubes and graphene for photonic applications written by K.K. Chow and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of their estimated ultra-high third-order nonlinearity, single-walled carbon nanotubes (CNTs) can be regarded as a potential new material for optical nonlinearity. The nonlinearity of CNTs is believed to originate from the inter-band transitions of the π-electrons, causing nonlinear polarization. In this respect, CNTs are similar to other organic optical materials that exhibit extremely high nonlinearity. CNT-based photonics devices offer several key advantages, including ultrafast response, robustness, tunability of wavelength, and compatibility to fibers. This chapter will describe the design and fabrication of CNT-based nonlinear photonic devices. CNTs with suitable diameters – and thus suitable operational wavelengths – are deposited or grown directly on different types of fibers or waveguides to ensure effective CNT–light interaction. Optical nonlinear effects including four-wave mixing (FWM), cross-phase modulation (XPM), and self-phase modulation (SPM) have been observed experimentally using fabricated CNT-based devices. Corresponding wavelength conversion and optical signal regeneration applications based on various nonlinear effects are discussed.
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 Carbon nanotubes and graphene for photonic applications written by W.B. Cho and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single-walled carbon nanotubes (SWCNTs) possessing outstanding linear and nonlinear optical properties are utilized as saturable absorbers (SAs) for passive mode-locking of different bulk solid-state lasers in a wide spectral range between 0.8 and 2μm. To overcome some of the limitations and drawbacks of currently available saturable absorbers, diverse carbon nanotubes and techniques for fabrication of single-walled carbon nanotube saturable absorbers (SWCNT-SAs) are investigated. In this chapter, we discuss various manufacturing procedures and essential characteristics of SWCNT-based passive mode-locking devices, and review recent demonstrations of passively mode-locked solid-state lasers employing different types of SWCNT-SAs.
Download or read book Carbon nanotubes and graphene for photonic applications written by Y.-W. Song and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: With their nano-scaled dimensions and extremely elevated optical nonlinearity, carbon nanostructures including single-walled carbon nanotubes and graphene have played a critical role in generating ultrafast optical pulses. The pulsation relies on passive mode-locking of the nanostructures, and has been enhanced by employing an evanescent field interaction scheme that guarantees the all-fiber high-power operation. Preparation schemes for pulsating devices have been evolving via the development of elegant processes such as optical deposition, electrospray, and aerosol deposition of carbon nanostructures, ensuring the dramatic increase of process efficiency. In this chapter, details of the technical achievements are addressed.
Download or read book Carbon nanotubes and graphene for photonic applications written by B.A. Baker and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes have been explored in light-harvesting and photovoltaic devices because of their unique optoelectronic properties. This chapter provides a brief description of the optoelectronic properties of carbon nanotubes, particularly single-wall carbon nanotubes (SWCNTs), and their implication in various solar cell applications including donor–acceptor solar cells, polymer solar cells, and dye-sensitized solar cells, where carbon nanotubes are utilized as photoactive materials. Carbon-nanotube-based electrodes in photovoltaic devices are also introduced. Carbon-nanotube-based light-harvesting devices are reviewed in terms of fabrication and material processing as well as performance. Finally, advanced emerging methods and the future outlook for carbon-nanotube-based solar cells are discussed.
Download or read book Carbon Nanotubes written by Jose Mauricio Marulanda and published by BoD – Books on Demand. This book was released on 2011-08-01 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs), discovered in 1991, have been a subject of intensive research for a wide range of applications. In the past decades, although carbon nanotubes have undergone massive research, considering the success of silicon, it has, nonetheless, been difficult to appreciate the potential influence of carbon nanotubes in current technology. The main objective of this book is therefore to give a wide variety of possible applications of carbon nanotubes in many industries related to electron device technology. This should allow the user to better appreciate the potential of these innovating nanometer sized materials. Readers of this book should have a good background on electron devices and semiconductor device physics as this book presents excellent results on possible device applications of carbon nanotubes. This book begins with an analysis on fabrication techniques, followed by a study on current models, and it presents a significant amount of work on different devices and applications available to current technology.
Download or read book Carbon nanotubes and graphene for photonic applications written by J. Pan and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes are exceptionally photostable fluorophores that emit in the near infrared range. Their novel optical properties make them particularly appealing for applications in biosensing. This chapter focuses on the state-of-the-art development of optical biosensors based on single-walled carbon nanotubes (SWCNTs); also, it draws attention to the basic photophysics of SWCNTs, optical-sensing mechanisms, and surface functionalization principles. The concerted efforts from the research community in the past decade have enabled the realization of several SWCNT-based optical biosensors that provide real-time, non-invasive analyte detection. We review the performance of these biosensors with regard to their sensitivity, selectivity and response time, and highlight the prospects and challenges of constructing biosensors for more advanced sensing applications.
Download or read book Carbon nanotubes and graphene for photonic applications written by T. Wilkinson and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter discusses the background knowledge and provides a literature review of carbon-nanotubes-based metamaterials and other nanophotonic devices we present in the chapter. The materials properties of carbon nanotubes are discussed, along with their possible application in producing metamaterials which display artificial optical properties. A detailed analysis of different types of metamaterials is presented, along with their theory and applications. The utilization of silicon nanopillars for producing photonic crystals and the enhanced reflection effects are discussed. Lastly, the theoretical background and designing of carbon nanotube forests-based Fresnel lenses are presented.
Download or read book Carbon nanotubes and graphene for photonic applications written by W. Walden-Newman and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single-walled carbon nanotubes (SWCNTs) have recently attracted tremendous interest as a nanomaterial for photonics and quantum photonics devices. Here we shall review recent work with a focus on quantum light properties such as blinking and spectral diffusion, and in particular, methods and techniques to suppress these detrimental effects with the goal of enhancing optical emission. Furthermore, we shall review recent work on the generation and detection of nonclassical light emissions from individual SWCNTs embedded in polymer cavities, and discuss the role of spatial exciton localization along the tube.
Download or read book Carbon nanotubes and graphene for photonic applications written by L.-M. Peng and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs) are excellent optoelectronic materials and have been investigated for various electronic and optoelectronic device applications, such as light-emitting diodes, photodetectors and photovoltaic cells. This chapter begins with a general discussion on the various types of CNT diodes. It then focuses on a particular type of CNT diode fabricated by a doping-free process, and its application in photovoltaic cells and light-emitting diodes. The chapter ends with an outlook for the use of CNT in further integrated nanoelectronics and optoelectronics.
Download or read book Characterization of Carbon Nanotube Based Composites under Consideration of Defects written by Moones Rahmandoust and published by Springer. This book was released on 2015-10-14 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the characterization methods involved with carbon nanotubes and carbon nanotube-based composites, with a more detailed look at computational mechanics approaches, namely the finite element method. Special emphasis is placed on studies that consider the extent to which imperfections in the structure of the nanomaterials affect their mechanical properties. These defects may include random distribution of fibers in the composite structure, as well as atom vacancies, perturbation and doping in the structure of individual carbon nanotubes.
Download or read book Nonlinear Optics written by İlkay Bakırtaş and published by BoD – Books on Demand. This book was released on 2021-01-27 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: With this book, we aim to capture different perspectives of researchers on nonlinear optics and optical devices and we intend to cover the latest developments in optics from theoretical, numerical, and experimental aspects. The eleven selected chapters cover a variety of topics related to nonlinear optics including bright, dark, kink solitary waves in various media, magnetic solitons, lattice solitons, rogue-waves, solid-state lasers, laser cladding, optical sensors, optical vortices, and molecular switches. The book is intended to draw the attention of scientists in academia, as well as researchers and engineers in industry, since the field has a significant potential for the production and design of novel optical devices and other technological applications.
Download or read book Photonic Devices Based on Periodic Arrays of Carbon Nanotubes and Silicon Nanopillars written by Haider Butt and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This document presents the modelling and characterization of novel photonic devices based on periodic arrays of multiwalled carbon nanotubes. Multiwalled carbon nanotubes are mostly metallic in nature and interesting plasmonic effects are observed when nanotubes are grown close together, with spacing of about 400 nm. The effective electronic mass on the nanotubes changes, due to mutual coupling between them and they start displaying dielectric properties which are inherently different from the their own, forming metamaterials. We present a plasmonic high pass filtering application of carbon nanotube based metamaterials. Some promising modelling and experimental results are demonstrated showing a strong cut-off filtering effect at the plasma frequency displayed by the periodic arrays of multiwalled carbon nanotubes. The artificial negative dielectric constant displayed by the nanotube arrays was also successfully utilised for producing micron-scaled applications like optical waveguides and negative lenses for overcoming the diffraction limit. The fabrication of these optical devices using the arrays of silicon nanopillars was also considered. These arrays when fabricated at nano-scaled dimensions (of about 400 nm) present a greater degree of periodicity and require a simpler fabrication process compared to carbon nanotubes. We report the detailed computational analysis on silicon nanopillars based photonic crystals, waveguides and metamaterials which operate well within in the optical regime. However, due to the fabrication limitations, the fabricated Si nanopillars presented an inverted cone shape profile along their lengths. These inverted nanocone structures were successfully utilised for enhancing reflection from Si surfaces for applications in photovoltaic devices. Lastly we present a novel application of carbon nanotube arrays for producing micron-scale Fresnel lens arrays. Forests of carbon nanotubes were utilised as absorbing media on top of a bare silicon substrate. Optical diffraction of light across the nanotube forests produced strong focusing of light, at focal lengths of order 125 microns. Numerical simulations were in excellent agreement with the measured results.
Download or read book Carbon Nanotubes and Their Applications written by Qing Zhang and published by CRC Press. This book was released on 2012-04-23 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book overviews the current status of research and development activities of CNTs in nanodevices, nanomaterials, or nanofabrication. This book presents 15 state-of-the-art review articles that cover CNT synthesis technologies for growing highly orientated CNTs, chirality-pure CNTs and CNTs at a large throughput and low cost, CNT assembly techniques, CNT sorting and separation processes, CNT functionalization engineering for more functionalities, CNT fundamental properties and their practical/potential electrical, electronic, optical, mechanical, chemical and biological applications.
Download or read book Progress in Nanophotonics 6 written by Takashi Yatsui and published by Springer Nature. This book was released on 2021-07-21 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on recent interconnected topics in nanophotonics written by scientists at the forefront of these fields. The book presents results of numerical investigations of light-matter interactions at the nanoscale and in the attosecond regime using first-principles calculations while also discussing recent experimental developments of higher-order harmonic generation for the field of attosecond science. In addition to this, the book reviews recent advances in select topical areas such as highly efficiency solid-state light sources based on nanophotonics, plasmonic photochemical water splitting for efficient energy harvesting, and optical spectroscopy of single-walled carbon nanotubes with quite rich physics for future application in photonics.
Download or read book Carbon nanotubes and graphene for photonic applications written by E. Gaufrès and published by Elsevier Inc. Chapters. This book was released on 2013-08-31 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter describes how the semiconducting-single-wall nanotube (SWNT) extraction affects their luminescence properties and how such properties can be exploited to fabricate optical sources emitting in near-infrared wavelengths ranging from 1 to 2μm. The main applications of carbon nanotube (CNT) lasers are aimed at optical interconnects and biophotonics. We review recent achievements in obtaining optical gain in thin films doped with CNTs. Techniques for determining optical gain in CNTs are considered with particular focus on the variable strip length (VSL) method and choices to integrate nanotubes in the optical waveguide are discussed.
