Download or read book Controlled Assembly and Electronic Transport Studies of Solution Processed Carbon Nanotube Devices written by Paul Stokes and published by . This book was released on 2010 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developing techniques for the parallel fabrication of Complementary Metal Oxide Semiconductor (CMOS) compatible single walled carbon nanotube (SWNT) electronic devices is of great importance for nanoelectronic applications. In this thesis, solution processed SWNTs in combination with AC dielectrophoresis (DEP) were utilized to fabricate CMOS compatible SWNT field effect transistors (FETs) and single electron transistors (SETs) with high yield and their detailed electronic transport properties were studied. Solution processing of SWNTs is attractive not only for the high throughput and parallel manufacturing of SWNT devices but also due to the ease of processing at room temperature, and compatibility with various substrates. However, it is generally believed that solution processing introduces defects and can degrade electronic transport properties. The results presented in this dissertation show that devices assembled from stable solutions of SWNT can give rise to high quality FET devices at room temperature and relatively clean SET behavior at low temperature. This is a strong indication that there are no or few intrinsic defects in the SWNTs. The dissertation will also discuss the controlled fabrication of size tunable SWNT SET devices using a novel mechanical template approach which offers a route towards the parallel fabrication of room temperature SET devices. The approach is based on the formation of two tunnel barriers created in a SWNT a distance L apart by bending the SWNT at the edge of a local Al/Al2O3 bottom gate. The local gate tunes individual electrons one by one in the device and defines the size of the quantum dot though its width. By tuning both the back gate and local gate, it is possible to tune the transparency of tunnel barriers and the size of the quantum dot further. Detailed transport spectroscopy of these devices will be presented.
Download or read book Physics of Carbon Nanotube Devices written by Francois Leonard and published by William Andrew. This book was released on 2008-11-18 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Possibly the most impactful material in the nanotechnology arena, carbon nanotubes have spurred a tremendous amount of scientific research and development. Their superior mechanical and chemical robustness makes them easily manipulable and allows for the assembly of various types of devices, including electronic, electromechanical, opto-electronic and sensing devices.In the field of nanotube devices, however, concepts that describe the properties of conventional devices do not apply. Carbon nanotube devices behave much differently from those using traditional materials, and offer entirely new functionality. This book – designed for researchers, engineers and graduate students alike – bridges the experimental and theoretical aspects of carbon nanotube devices. It emphasizes and explains the underlying physics that govern their working principles, including applications in electronics, nanoelectromechanical systems, field emission, optoelectronics and sensing. Other topics include: electrical contacts, p-n junctions, transistors, ballistic transport, field emission, oscillators, rotational actuators, electron-phonon scattering, photoconductivity, and light emission. Many of the aspects discussed here differ significantly from those learned in books or traditional materials, and are essential for the future development of carbon nanotube technology.• Bridges experimental and theoretical aspects of carbon nanotube devices, focusing on the underlying physics that govern their working principles • Explains applications in electronics, nanoelectromechanical systems, field emission, optoelectronics and sensing. • Other topics include: electrical contacts, p-n junctions, transistors, ballistic transport, field emission, oscillators, rotational actuators, electron-phonon scattering, photoconductivity, and light emission. • Covers aspects that significantly differ from those learned in traditional materials, yet are essential for future advancement of carbon nanotube technology.* Bridges experimental and theoretical aspects of carbon nanotube devices, focusing on the underlying physics that govern their working principles * Explains applications in electronics, nanoelectromechanical systems, field emission, optoelectronics and sensing.* Other topics include: electrical contacts, p-n junctions, transistors, ballistic transport, field emission, oscillators, rotational actuators, electron-phonon scattering, photoconductivity, and light emission* Covers aspects that significantly differ from those learned in traditional materials, yet are essential for future advancement of carbon nanotube technology.
Download or read book Electronic and Ionic Transport in Carbon Nanotubes and Other Nanostructures written by Di Cao and published by . This book was released on 2011 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes several experiments based on carbon nanotube nanofludic devices and field-effect transistors. The first experiment detected ion and molecule translocation through one single-walled carbon nanotube (SWCNT) that spans a barrier between two fluid reservoirs. The electrical ionic current is measured. Translocation of small single stranded DNA oligomers is marked by large transient increases in current through the tube and confirmed by a PCR (polymerase chain reaction) analysis. Carbon nanotubes simplify the construction of nanopores, permit new types of electrical measurement, and open new avenues for control of DNA translocation. The second experiment constructed devices in which the interior of a single-walled carbon nanotube field-effect transistor (CNT-FET) acts as a nanofluidic channel that connects two fluid reservoirs, permitting measurement of the electronic properties of the SWCNT as it is wetted by an analyte. Wetting of the inside of the SWCNT by water turns the transistor on, while wetting of the outside has little effect. This finding may provide a new method to investigate water behavior at nanoscale. This also opens a new avenue for building sensors in which the SWCNT functions as an electronic detector. This thesis also presents some experiments that related to nanofabrication, such as construction of FET with tin sulfide (SnS) quantum ribbon. This work demonstrates the application of solution processed IV-VI semiconductor nanostructures in nanoscale devices.
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 Carbon Nanotube and Graphene Device Physics written by H.-S. Philip Wong and published by Cambridge University Press. This book was released on 2011 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first introductory textbook to explain the properties and performance of practical nanotube devices and related applications.
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 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.
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 Nanotube Devices written by and published by John Wiley & Sons. This book was released on 2008-05-05 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following on from the first AMN volume, this handy reference and textbook examines the topic of nanosystem design in further detail. It explains the physical and chemical basics behind the design and fabrication of nanodevices, covering all important, recent advances in the field, while introducing nanosystems to less experienced readers. The result is an important source for a fast, accurate overview of the state of the art of nanosystem realization, summarizing further important literature.
Download or read book Printed Flexible Sensors written by Anindya Nag and published by Springer. This book was released on 2019-03-11 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents recent advances in the design, fabrication and implementation of flexible printed sensors. It explores a range of materials for developing the electrode and substrate parts of the sensors, on the basis of their electrical and mechanical characteristics. The sensors were processed using laser cutting and 3D printing techniques, and the sensors developed were employed in a number of healthcare, environmental and industrial applications, including: monitoring of physiological movements, respiration, salinity and nitrate measurement, and tactile sensing. The type of sensor selected for each application depended on its dimensions, robustness and sensitivity. The sensors fabricated were also embedded in an IoT-based system, allowing them to be integrated into real-time applications.
Download or read book Solution Processed Self assembly for Aligned Carbon Nanotube Devices written by John W. Dear and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Carbon Nanotubes written by Prasanta Ghosh and published by BoD – Books on Demand. This book was released on 2021-10-13 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotubes - Redefining the World of Electronics is a compendium of current, state-of-the-art information about carbon nanotubes (CNTs) and their potential applications in electronics. Chapters cover such topics as the incorporation of CNTs into electronic devices, CNT-based rubber composites for electronic components, the role of CNTs in different energy storage and conversion systems, and ternary implementations of carbon nanotube field-effect transistor (CNTFET) circuits.
Download or read book Nanomaterials Polymers and Devices written by E. S. W. Kong and published by John Wiley & Sons. This book was released on 2015-04-27 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing an eclectic snapshot of the current state of the art and future implications of the field, Nanomaterials, Polymers, and Devices: Materials Functionalization and Device Fabrication presents topics grouped into three categorical focuses: The synthesis, mechanism and functionalization of nanomaterials, such as carbon nanotubes, graphene, silica, and quantum dots Various functional devices which properties and structures are tailored with emphasis on nanofabrication. Among discussed are light emitting diodes, nanophotonic, nano-optical, and photovoltaic devices Nanoelectronic devices, which include semiconductor, nanotube and nanowire-based electronics, single-walled carbon-nanotube based nanoelectronics, as well as thin-film transistors
Download or read book Carbon Nanomaterial Electronics Devices and Applications written by Arnab Hazra and published by Springer Nature. This book was released on 2021-05-22 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together selective and specific chapters on nanoscale carbon and applications, thus making it unique due to its thematic content. It provides access to the contemporary developments in carbon nanomaterial research in electronic applications. Written by professionals with thorough expertise in similar broad area, the book is intended to address multiple aspects of carbon research in a single compiled edition. It targets professors, scientists and researchers belonging to the areas of physics, chemistry, engineering, biology and medicine, and working on theory, experiment and applications of carbon nanomaterials.
Download or read book Wafer scale Alignment of Semiconducting Carbon Nanotubes from Solution written by Katherine Rose Jinkins and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes are unique one-dimensional materials that exhibit extraordinary properties, including high stability, large elastic modulus, and exceptional charge and thermal transport, making them promising candidates for future mechanical, optical, and electronic devices. Electrical measurements of individual nanotubes have demonstrated room-temperature ballistic conductance and 3× higher current density than state-of-the-art Si field-effect transistors (FETs). While these results are exciting; to achieve the high on-current required for future carbon nanotube technologies to become viable, electronic devices must incorporate multiple nanotubes aligned in parallel. Alignment is especially critical to minimize sheet resistance and reduce charge carrier scattering in devices. However, the alignment of carbon nanotubes at intermediate packing densities in a scalable technique has plagued the electronics community for decades. In this work, we develop, explore, and elucidate three possible solutions to this long-standing challenge. First, we elucidate the mechanism of the floating evaporative self-assembly (FESA) technique, in which stripes of aligned nanotubes are deposited onto substrates by dosing a carbon nanotube ink at a water/substrate interface. We track the key interfaces directly at the substrate during FESA and show that the nanotube alignment occurs from the buried ink/water interface. We also demonstrate improved control over the bandwidth and band spacing of aligned carbon nanotubes and align nanotubes across a 2.5 × 2.5 cm2 substrate, an important step towards high-volume production. Ultimately, though, FESA cannot yield uniform, continuous films of aligned nanotubes over the wafer-scale, so other techniques are explored. We use the understanding gained toward the FESA mechanism to develop another alignment technique, tangential flow interfacial self-assembly (TaFISA), to fabricate uniform films of highly aligned carbon nanotubes for short channel FETs. In this process, we demonstrate that an ink/water interface can induce liquid crystal assembly of carbon nanotubes. Flowing this two-dimensional nematic assembly of nanotubes, globally aligns the nanotubes. By translating a substrate through this flowing ink/water interface, uniform films of highly aligned (within ±5.7°) nanotubes are deposited across 10 cm wide substrates. Due to the underlying lyotropic liquid crystal phenomena, the nanotube ordering improves with increasing concentration and decreasing temperature. The exceptional alignment leads to excellent FET performance with high on-state current density averaging 520 [mu]A [mu]m−1 at a V[DS] of -0.6 V. We also perform a more detailed investigation of experimental parameters that can affect the interfacial assembly, including nanotube ink solvent, substrate surface water contact angle, and modification of the water subphase. We also study the effect of shear on nanotube ink, without the ink/water interface as used in the FESA and TaFISA technique. We elucidate the effect of shear rate on nanotube alignment and find that the alignment increases with increasing shear rate following a power law dependence. We also demonstrate control over the nanotube packing density by tailoring the carbon nanotube ink concentration and ink volume. FETs are fabricated with their charge transport direction parallel and perpendicular to the alignment. The parallel FETs exhibit 7× faster charge carrier mobility of 101 cm2 V−1 s−1, while also simultaneously displaying high on/off ratio of 105. Deposition conditions are extensively optimized to enable alignment within a ± 27° window at nearly ideal packing density of 50 nanotubes [mu]m−1 over large-area 10 × 10 cm2 substrates. These quasi-aligned films are promising candidates for long-channel FETs (e.g., in displays, sensors, and flexible electronics), where some misalignment is necessary to allow charge percolation. We additionally report our work utilizing solution-based shear to fabricate ultrathin films of aligned cellulose nanocrystals. Cellulose nanocrystals (CNC) exhibit excellent mechanical and piezoelectric properties, making this material attractive for use in high-performance coatings. Toward this goal, we use confined shear-based alignment to fabricate ultrathin films of aligned CNC. The shear rate is varied from 19 to 19000 s−1 to improve the half-width at half-maximum of the spread in CNC alignment from 130 to 30°. The CNC solution volume and concentration are both used to independently control the film height.
Download or read book Nanoelectronics and Information Technology written by Rainer Waser and published by John Wiley & Sons. This book was released on 2012-05-29 with total page 1041 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fachlich auf höchstem Niveau, visuell überzeugend und durchgängig farbig illustriert: Das ist die neue Auflage der praxisbewährten Einführung in spezialisierte elektronische Materialien und Bauelemente aus der Informationstechnologie. Über ein Drittel des Inhalts ist neu, alle anderen Beiträge wurden gründlich überarbeitet und aktualisiert.
