Download or read book Study of Single walled Carbon Nanotubes for Applications in Transistors Photodetectors and Stretchable Electrodes for Tactile Sensors written by Steve Park and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Single-walled carbon nanotubes (SWNTs) are tubular carbon-based nanostructures that can be envisioned as graphene rolled up into a seamless cylinder. They are an ideal candidate for use in various electronic and optoelectronic applications due to their unique properties such as high carrier mobility, high light absorption, mechanical flexibility, and solution processability that enable large area, and low cost electronics. Some of the applications include circuits, RFID tags, photodetectors, electronic paper, and robotic systems with skin-like sensing capabilities. To enable these exciting applications, characterization, optimization of device performance, and novel device concepts with properties tailored to specific applications are critical. There are generally two different ways of using SWNTs in electronic devices: 1) as active semiconducting material (in devices like transistors, photodetectors etc.) and 2) as metallic electrodes (as interconnects, electrodes in stretchable tactile sensors etc.). In Chapter I, we will review the recent progress of using SWNTs in both of these applications. Chapter I should equip the reader with a background and understanding of current trends and future outlook of SWNT-based electronics. In Chapter II and Chapter III, we will discuss a novel technique to generate electrical contacts to individual SWNTs, known as dip-pen nanolithography, to characterize their electrical properties. Characterization of electrical properties of individual SWNTs is critical to the understanding of their behavior in large-scale systems. In Chapter II, we will emphasize on the methods and insights to fabricating high quality electrodes with uniform dimensions and functionality. In Chapter III, we will focus on the electrical characterization of individual SWNTs using DPN-fabricated short-channel transistors. Here, we will use our short-channel devices to statistically quantify the percentage of semiconducting versus metallic SWNTs of a solution sorting system, along with critical device parameters such as on-conductance, on/off ratio, and threshold voltage. In Chapter IV, we will move onto discussing large-scale, SWNT film-based transistors. Here, we will introduce a novel technique known as solution shearing to densely align SWNTs over a large area. We will compare aligned SWNT versus randomly oriented SWNTs to elucidate how dense packing and alignment affects the electrical properties of SWNT films. In Chapter V, we will present a hybrid film of SWNT and fullerene as highly sensitive infrared photodetectors. Here, we will discuss how sensitivity can be enhanced using various parameters, and how it can potentially be used in various application such as flexible infrared imaging devices. Finally, in Chapter VI, we will present a stretchable energy harvesting electronic skin device, where SWNTs were used as stretchable electrodes. Here, we will discuss the key concepts in enhancing pressure sensitivity, how to differentiate between different tactile information, and how energy can efficiently be harvested to generate electrical power. Each chapter will conclude with a brief summary, and will discuss the challenges that need to be met to fully realize the potential of SWNTs. This thesis should not only provide new insights to enhancing device performance, but should also excite the reader on the promising outlook of SWNT-based electronics, and motivate them to pursue them.
Download or read book Carbon Nanotube Based Sensors written by Anindya Nag and published by CRC Press. This book was released on 2024-05-02 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotube-Based Sensors: Fabrication, Characterization, and Implementation highlights the latest research and developments on carbon nanotubes (CNTs) and their applications in sensors and sensing systems. It offers an overview of CNTs, including their synthesis, functionalization, characterization, and toxicology. It then delves into the fabrication and various applications of CNT-based sensors. FEATURES Defines the significance of different forms of CNT-based sensors synthesized for diverse engineering applications and compares the feasibility of their generation Helps readers evaluate different types of fabrication techniques to generate CNTs and their subsequent sensing Discusses fabrication of low-cost, efficient CNTs-based sensors that can be used for diverse applications and sheds light on synthesis methods for a range of printing techniques Highlights challenges and advances in security-related issues using CNTs-based sensors This book is aimed at researchers in the fields of materials and electrical engineering who are interested in the development of sensor technology for industrial, biomedical, and related applications.
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.
Download or read book Nanocarbon Electronics written by Changjian Zhou and published by CRC Press. This book was released on 2020-12-30 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive review of research on applications of carbon nanotubes (CNTs) and graphene to electronic devices. As nanocarbons in general, and CNTs and graphene in particular, are becoming increasingly recognized as the most promising materials for future generations of electronic devices, including transistors, sensors, and interconnects, a knowledge gap still exists between the basic science of nanocarbons and their feasibility for cost-effective product manufacturing. The book highlights some of the issues surrounding this missing link by providing a detailed review of the nanostructure and electronic properties, materials, and device fabrication and of the structure–property–application relationships.
Download or read book Carbon Nanotube Electronics written by Ali Javey and published by Springer Science & Business Media. This book was released on 2009-04-21 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a complete overview of the field of carbon nanotube electronics. It covers materials and physical properties, synthesis and fabrication processes, devices and circuits, modeling, and finally novel applications of nanotube-based electronics. The book introduces fundamental device physics and circuit concepts of 1-D electronics. At the same time it provides specific examples of the state-of-the-art nanotube devices.
Download or read book Carbon Nanotubes written by Michael J. O’Connell and published by CRC Press. This book was released on 2018-10-03 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since their discovery more than a decade ago, carbon nanotubes (CNTs) have held scientists and engineers in captive fascination, seated on the verge of enormous breakthroughs in areas such as medicine, electronics, and materials science, to name but a few. Taking a broad look at CNTs and the tools used to study them, Carbon Nanotubes: Properties and Applications comprises the efforts of leading nanotube researchers led by Michael O’Connell, protégé of the late father of nanotechnology, Richard Smalley. Each chapter is a self-contained treatise on various aspects of CNT synthesis, characterization, modification, and applications. The book opens with a general introduction to the basic characteristics and the history of CNTs, followed by discussions on synthesis methods and the growth of “peapod” structures. Coverage then moves to electronic properties and band structures of single-wall nanotubes (SWNTs), magnetic properties, Raman spectroscopy of electronic and chemical behavior, and electromechanical properties and applications in NEMS (nanoelectromechanical systems). Turning to applications, the final sections of the book explore mechanical properties of SWNTs spun into fibers, sidewall functionalization in composites, and using SWNTs as tips for scanning probe microscopes. Taking a fresh look at this burgeoning field, Carbon Nanotubes: Properties and Applications points the way toward making CNTs commercially viable.
Download or read book Carbon Based Electronics written by Ashok Srivastava and published by CRC Press. This book was released on 2015-03-19 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discovery of one-dimensional material carbon nanotubes in 1991 by the Japanese physicist Dr. Sumio Iijima has resulted in voluminous research in the field of carbon nanotubes for numerous applications, including possible replacement of silicon used in the fabrication of CMOS chips. One interesting feature of carbon nanotubes is that these can be me
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 Single Walled Carbon Nanotubes written by Melorina Dolafi Rezaee and published by American Chemical Society. This book was released on 2023-08-01 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Single-walled carbon nanotubes (SWCNTs) are cylindrical one-dimensional nanomaterials made of single-layered graphene sheets. They possess unique properties because of their specific structure. Due to their distinct electronic structure and impressive thermal, mechanical, and optical properties, SWCNTs have great applications in biomedicine, energy storage, nanomechanical devices, etc. So far, many methods have been developed to synthesize SWCNTs. Despite the great achievements in the synthesis and applications of SWCNTs in the past few decades, many challenges remain. This primer will equip the reader with a foundational understanding of the growth mechanisms of SWCNTs and the advantages and disadvantages of the process and growth conditions of the various techniques. The reader will also learn how to relate the properties and structure of these materials to their specific functionality in the desired application.
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 Electronic Characterization of Individual Single Walled Carbon Nanotubes written by Chi-Yan Wong and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Electronic Characterization of Individual Single-walled Carbon Nanotubes" by Chi-yan, Wong, 王志仁, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled ELECTRONIC CHARACTERIZATION OF INDIVIDUAL SINGLE-WALLED CARBON NANOTUBES Submitted by Wong Chi Yan for the Degree of Master of Philosophy at The University of Hong Kong in September 2007 The outstanding properties of carbon nanotubes (CNTs) have attracted con- siderable research effort in the last decade. CNTs are quasi-one-dimensional materials which can be used to study fundamental quantum effects of one- dimensional systems. TherehasbeenagreatdealofinterestspecificallyinsemiconductingCNTs, which have shown to be promising candidates as the building blocks for the next-generation electronic applications. Carbon nanotube electronic devices have the potential to replace conventional silicon-based counterparts. How- ever, there are still obstacles that remain with regard to the scientific study or application oriented researches. For example, the growth orientation and the band gaps of individual CNTs are difficult to control. In addition, pronounced low-frequency current fluctuation, 1/f noise, exists. The measured noise levelisevencomparabletothesignallevelundersomecircumstances, therebylimit- ing the application of CNTs in low-signal electronics and the overall reliability of CNT based devices. In this thesis, single-walled CNTs (SWNTs) were chosen as a studying modelduetotheirsimplicityinnature. DifferentmethodsofindividualSWNT fieldeffecttransistor(FET)fabricationmethodswerecompared. Themethods included: (I) Directed growth of ultra long SWNTs on a wafer by CVD using ethanol, and (II) Dispersing the SWNTs fabricated by ordinary CVD, on the wafer with organic solvents. The noise behavior for both fabrication methods were characterized by DAQ and lock-in noise measurement methods. Thereafter, thebasicI-V measurementsoffabricatedSWNTFETdevices were also performed. The hysteresis effect and its time dependent measure- ments in FETs were illustrated. The measurements results suggested that the hysteresis effect in nanotube devices was attributed to the charge traps in the oxide layer of FETs. Finally, the 1/f noise of SWNT FETs was studied. It was shown that the 1/f noise arose from the carrier number fluctuations rather than mobility fluctuations, as a superposition of Lorentzian fluctuation spectra. The corre- -2 sponding Hooge constant was found to be gate dependent and about 10 in thelinearregime. Bycomparingwiththereportedsimulationresultofrandom telegraphsignal(RTS)noiseamplitudeinsubthresholdregime, itwasproposed that such Lorentzian fluctuation spectra were due to the RTS noise, arising from the gate potential fluctuations in the CNT, and the charge exchange be- tween CNT and oxide layer. These potential fluctuations were attributed to trapped charges in the oxide nearby which changed the number of carriers in the CNTs. DOI: 10.5353/th_b3955704 Subjects: Nanotubes Nanostructured materials - Electric properties Transistors
Download or read book Carbon Nanotubes and Graphene written by Kazuyoshi Tanaka and published by Newnes. This book was released on 2014-07-10 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotubes and Graphene is a timely second edition of the original Science and Technology of Carbon Nanotubes. Updated to include expanded coverage of the preparation, purification, structural characterization, and common application areas of single- and multi-walled CNT structures, this work compares, contrasts, and, where appropriate, unitizes CNT to graphene. This much expanded second edition reference supports knowledge discovery, production of impactful carbon research, encourages transition between research fields, and aids the formation of emergent applications. New chapters encompass recent developments in the theoretical treatments of electronic and vibrational structures, and magnetic, optical, and electrical solid-state properties, providing a vital base to research. Current and potential applications of both materials, including the prospect for large-scale synthesis of graphene, biological structures, and flexible electronics, are also critically discussed. - Updated discussion of properties, structure, and morphology of biological and flexible electronic applications aids fundamental knowledge discovery - Innovative parallel focus on nanotubes and graphene enables you to learn from the successes and failures of, respectively, mature and emergent partner research disciplines - High-quality figures and tables on physical and mathematical applications expertly summarize key information – essential if you need quick, critically relevant data
Download or read book Novel Applications of Carbon Nanotube written by Pengfei Qi and published by . This book was released on 2006 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbon Nanotubes From Basic Research to Nanotechnology written by Valentin N. Popov and published by Springer Science & Business Media. This book was released on 2006-05-03 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is about 15 years that the carbon nanotubes have been discovered by Sumio Iijima in a transmission electron microscope. Since that time, these long hollow cylindrical carbon molecules have revealed being remarkable nanostructures for several aspects. They are composed of just one element, Carbon, and are easily produced by several techniques. A nanotube can bend easily but still is very robust. The nanotubes can be manipulated and contacted to external electrodes. Their diameter is in the nanometer range, whereas their length may exceed several micrometers, if not several millimeters. In diameter, the nanotubes behave like molecules with quantized energy levels, while in length, they behave like a crystal with a continuous distribution of momenta. Depending on its exact atomic structure, a single-wall nanotube –that is to say a nanotube composed of just one rolled-up graphene sheet– may be either a metal or a semiconductor. The nanotubes can carry a large electric current, they are also good thermal conductors. It is not surprising, then, that many applications have been proposed for the nanotubes. At the time of writing, one of their most promising applications is their ability to emit electrons when subjected to an external electric field. Carbon nanotubes can do so in normal vacuum conditions with a reasonable voltage threshold, which make them suitable for cold-cathode devices.
Download or read book Carbon Nanotubes written by Ann Rose Abraham and published by CRC Press. This book was released on 2022-10-06 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book discusses a selection of advanced topics on carbon nanotubes—their extraordinary properties, structure, design, fabrication, development, engineering, functionalization, carbon nanotube enabled nanocomposites, characterization, and, moreover, their utility in many applications. The volume highlights the amazing potential of advanced CNT composites in automotive, aeronautics, spacecrafts, transistors replacing Si electronics, energy, purification, hydrogen storage, tissue regeneration, electrochemical supercapacitors, sensing, biomedical applications, agriculture, energy, and technical applications. The book specifically discusses the applications of carbon nanotubes for a greener environment, as well as applications for biomedical uses, in drug delivery, and in display technology. It also explores the uses of CNTs in the energy and aerospace industries, such as for solar energy conversion, as a lubricant additive for enhancing energy efficiency, and more. Other chapters explore the potential of carbon nanotubes in hydrogen storage and carbon nanotube electronics.
Download or read book Dispersion of Narrow Diameter Carbon Nanotubes for Optical Characterization written by Hemant M. Shah and published by . This book was released on 2008 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical properties of carbon nanotubes have recently attracted considerable amount of attention. Due to there direct band gap material characteristic these and dimension of the order of nano meters they find potential applications in the field of nano photonics. Thus the optical study of carbon nanotubes is important for both fundamental research and for the next generation technical applications. In this thesis single walled carbon nanotubes were dispersed in various encapsulates such as surfactants, polymers, proteins etc to separate them individually and study there optical properties. The individually dispersed single walled carbon nanotubes displayed unique absorbance spectra. The optical absorption spectrum of a particular tube is expected to be dominated by a series of relatively sharp inter-band transitions, at energies associated with the van Hove singularities, the absorbance spectrum obtained on our samples were consistent with this expectation. Our samples also showed sharp photoluminescence peaks mostly from the semiconducting single walled carbon nanotubes. The detailed overlap of the absorbance spectra and photoluminescence spectra lead us to believe that our samples contain mainly individual tubes encapsulated in one of the surfactants or polymers. Thin film transistors (TFT) were made with a mesh of single walled carbon nanotubes as the active channel on top of a silicon/silicon oxide substrate, with silicon acting as a back gate and titanium/gold electrodes were evaporated on top of the nanotube film. Photocurrent properties of these thin films were investigated and they showed a huge change in the photocurrent in the presence and absence of the laser light. Thin films of carbon nanotubes were also deposited on rectangular silicon substrates and the influence of applied strain in the presence of laser light was investigated. These films showed a huge change in resistance on application of mechanical strain. Raman measurements were also performed on these thin films and the obtained radial breathing mode (RBM) data helped resolve the diameter of many single walled carbon nanotubes.
Download or read book Carbon Nanotubes for Interconnects written by Aida Todri-Sanial and published by Springer. This book was released on 2016-07-09 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a single-source reference on the use of carbon nanotubes (CNTs) as interconnect material for horizontal, on-chip and 3D interconnects. The authors demonstrate the uses of bundles of CNTs, as innovative conducting material to fabricate interconnect through-silicon vias (TSVs), in order to improve the performance, reliability and integration of 3D integrated circuits (ICs). This book will be first to provide a coherent overview of exploiting carbon nanotubes for 3D interconnects covering aspects from processing, modeling, simulation, characterization and applications. Coverage also includes a thorough presentation of the application of CNTs as horizontal on-chip interconnects which can potentially revolutionize the nanoelectronics industry. This book is a must-read for anyone interested in the state-of-the-art on exploiting carbon nanotubes for interconnects for both 2D and 3D integrated circuits.
