Download or read book Low Complexity Arithmetic Circuit Design in Carbon Nanotube Field Effect Transistor Technology written by K. Sridharan and published by Springer Nature. This book was released on 2020-08-19 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the emerging carbon nanotube field-effect transistor (CNTFET) technology, and examines the problem of designing efficient arithmetic circuits in CNTFET technology. Observing that CNTFETs make it possible to achieve two distinct threshold voltages merely by altering the diameter of the carbon nanotube used, the book begins by discussing the design of basic ternary logic elements. It then examines efficient CNTFET-based design of single and multiple ternary digit adders by judicious choice of unary operators in ternary logic, as well as the design of a ternary multiplier in CNTFET technology, and presents detailed simulation results in HSPICE. Lastly, the book outlines a procedure for automating the synthesis process and provides sample code in Python.

Download or read book VLSI Microwave and Wireless Technologies written by Brijesh Mishra and published by Springer Nature. This book was released on 2022-09-03 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the International Conference on VLSI & Microwave and Wireless Technologies (ICVMWT-2021). The book includes peer-reviewed papers on the core technological developments in emerging fields like wireless communication, RF microwave/radar, VLSI, optical communication, etc. The book will serve as a valuable reference resource for academics and researchers across the globe.

Download or read book Carbon Nanotube Synthesis Device Fabrication and Circuit Design for Digital Logic Applications written by Albert Lin and published by Stanford University. This book was released on 2010 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotube Field Effect Transistor (CNFET) technology has received a lot of attention in the past few years as a promising extension to silicon-CMOS for future digital logic integrated circuits. While recent research has advanced CNFET technology past many important milestones, robust and scalable solutions must be developed to realize the full potential of CNFETs. Thus, this thesis aims to develop a suite of techniques, spanning from material synthesis to circuit solutions, compatible with very-large-scale integration (VLSI). Specifically, to enable the real-world engineering of carbon nanotube integrated circuits, this thesis presents (1) wafer-scale aligned CNT growth, (2) wafer-scale CNT Transfer, (3) wafer-scale device and circuit fabrication techniques, and (4) ACCNT, a VLSI-compatible circuit design solution to surmounting the problem of metallic CNTs. These techniques culminated in the successful demonstration of CNT transistors, inverters, and NAND logic gates on a wafer scale. Furthermore, this thesis sheds light on important design considerations for the demonstration of a simple CNT "computer" and suggests a few critical directions for future work in the field of carbon nanotube technology. In contributing the above, this thesis hopes to propel carbon nanotube technology forward towards the vision of robust, large-scale integrated circuits using high-density carbon nanotubes.

Download or read book Efficient Methods for Robust Circuit Design and Performance Optimization for Carbon Nanotube Field Effect Transistors written by and published by . This book was released on 2019 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a capacitance-based Logical Effort (LE) framework to investigate design issues of high-speed and low-power circuit designs implemented by considering specific requirements and challenges of the carbon nanotube field-effect transistor (CNFET) technology. The LE technique is widely recognized as a pedagogical method to quickly estimate and optimize the propagation delay and transition time in CMOS circuits equivalently without performing transient simulations and detailed delay calculations. In this thesis, we propose novel delay models [Pitch-Aware Logical Effort (PALE) and Position-Aware Pitch Factor (PAPF)] for fast and accurate performance evaluation by including the impact due to CNFET-specific parameters and CNT variations. Our developed models are correlated with SPICE simulations using different types of gates and circuits with an average error of 3% and 5% for ideal and realistic cases respectively. Our framework is capable of estimating performance more than 100x faster as compared to SPICE simulations methods. Furthermore, using our models (PALE and PAPF), we present an optimization tool to minimize the area and delay product (ADP) of CNFET circuits. We deploy circuit-level techniques (CLT) prior to optimizing the tubes (CNTs) in the logic gates to achieve highly optimized solution with global approach. Finally, we propose more accurate probabilistic model for yield estimation which incorporates the impact of screening effect on the functional yield after the removal of metallic tubes.

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 Field Effect Transistor written by Fouad Sabry and published by One Billion Knowledgeable. This book was released on 2022-07-10 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: What Is Carbon Nanotube Field Effect Transistor A carbon nanotube field-effect transistor, also known as a CNTFET, is a kind of field-effect transistor that makes use of a single carbon nanotube or an array of carbon nanotubes as the channel material in place of bulk silicon, as is done in the conventional MOSFET construction. Since they were first exhibited in 1998, there have been significant advancements in CNTFET technology. How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Carbon nanotube field-effect transistor Chapter 2: Carbon nanotube Chapter 3: JFET Chapter 4: Schottky barrier Chapter 5: Electron mobility Chapter 6: Nanoelectromechanical systems Chapter 7: Threshold voltage Chapter 8: Organic field-effect transistor Chapter 9: Ballistic conduction Chapter 10: Hybrid solar cell Chapter 11: Potential applications of carbon nanotubes Chapter 12: Carbon nanotubes in photovoltaics Chapter 13: Optical properties of carbon nanotubes Chapter 14: Carbon nanotube nanomotor Chapter 15: NanoIntegris Chapter 16: Ballistic conduction in single-walled carbon nanotubes Chapter 17: Tunnel field-effect transistor Chapter 18: Field-effect transistor Chapter 19: Carbon nanotubes in interconnects Chapter 20: Synthesis of carbon nanotubes Chapter 21: Vertically aligned carbon nanotube arrays (II) Answering the public top questions about carbon nanotube field effect transistor. (III) Real world examples for the usage of carbon nanotube field effect transistor in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technologies in each industry to have 360-degree full understanding of carbon nanotube field effect transistor' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of carbon nanotube field effect transistor.

Download or read book Major Applications of Carbon Nanotube Field Effect Transistors CNTFET written by Raj, Balwinder and published by IGI Global. This book was released on 2019-12-06 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: With recent advancements in electronics, specifically nanoscale devices, new technologies are being implemented to improve the properties of automated systems. However, conventional materials are failing due to limited mobility, high leakage currents, and power dissipation. To mitigate these challenges, alternative resources are required to advance electronics further into the nanoscale domain. Carbon nanotube field-effect transistors are a potential solution yet lack the information and research to be properly utilized. Major Applications of Carbon Nanotube Field-Effect Transistors (CNTFET) is a collection of innovative research on the methods and applications of converting semiconductor devices from micron technology to nanotechnology. The book provides readers with an updated status on existing CNTs, CNTFETs, and their applications and examines practical applications to minimize short channel effects and power dissipation in nanoscale devices and circuits. While highlighting topics including interconnects, digital circuits, and single-wall CNTs, this book is ideally designed for electrical engineers, electronics engineers, students, researchers, academicians, industry professionals, and practitioners working in nanoscience, nanotechnology, applied physics, and electrical and electronics engineering.

Download or read book Advances in Computer and Computational Sciences written by Sanjiv K. Bhatia and published by Springer. This book was released on 2017-05-25 with total page 753 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exchange of information and innovative ideas are necessary to accelerate the development of technology. With advent of technology, intelligent and soft computing techniques came into existence with a wide scope of implementation in engineering sciences. Keeping this ideology in preference, this book includes the insights that reflect the ‘Advances in Computer and Computational Sciences’ from upcoming researchers and leading academicians across the globe. It contains high-quality peer-reviewed papers of ‘International Conference on Computer, Communication and Computational Sciences (ICCCCS 2016), held during 12-13 August, 2016 in Ajmer, India. These papers are arranged in the form of chapters. The content of the book is divided into two volumes that cover variety of topics such as intelligent hardware and software design, advanced communications, power and energy optimization, intelligent techniques used in internet of things, intelligent image processing, advanced software engineering, evolutionary and soft computing, security and many more. This book helps the perspective readers’ from computer industry and academia to derive the advances of next generation computer and communication technology and shape them into real life applications.

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 Synthesis Device Dabrication and Circuit Design for Digital Logic Applications written by Albert Lin and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotube Field Effect Transistor (CNFET) technology has received a lot of attention in the past few years as a promising extension to silicon-CMOS for future digital logic integrated circuits. While recent research has advanced CNFET technology past many important milestones, robust and scalable solutions must be developed to realize the full potential of CNFETs. Thus, this thesis aims to develop a suite of techniques, spanning from material synthesis to circuit solutions, compatible with very-large-scale integration (VLSI). Specifically, to enable the real-world engineering of carbon nanotube integrated circuits, this thesis presents (1) wafer-scale aligned CNT growth, (2) wafer-scale CNT Transfer, (3) wafer-scale device and circuit fabrication techniques, and (4) ACCNT, a VLSI-compatible circuit design solution to surmounting the problem of metallic CNTs. These techniques culminated in the successful demonstration of CNT transistors, inverters, and NAND logic gates on a wafer scale. Furthermore, this thesis sheds light on important design considerations for the demonstration of a simple CNT "computer" and suggests a few critical directions for future work in the field of carbon nanotube technology. In contributing the above, this thesis hopes to propel carbon nanotube technology forward towards the vision of robust, large-scale integrated circuits using high-density carbon nanotubes.

Download or read book Digital Logic Design Using Carbon Nanotube Field Effect Transistors written by Debaprasad Das and published by LAP Lambert Academic Publishing. This book was released on 2012-01 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the design of digital logic circuits using carbon nanotube field effect transistors (CNTFET). CNTFET is a promising device in the nanometer regime which utilizes a semiconducting carbon nanotube (CNT) channel between the source and drain terminals. Due to the excellent electrical properties of CNT it can offer very high speed integrated circuits. Starting with the basics of CNT and CNTFET this book discusses the modeling of CNTFET using Verilog-AMS language. The design of the basic logic gates is presented. The designs are simulated to verify their functionality and extract the speed and power performances. The design of reconfigurable logic circuits using transmission gate based logic is also presented. A ring oscillator circuit has been designed using CNTFET and it is found that the circuit can operate at very high frequency of 114 GHz.

Download or read book A Systematic Study and Design Guidelines for Carbon Nanotube Field effect Transistor Based Circuits written by Yi-Chieh Chen and published by . This book was released on 2008 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design of Arithmetic Circuits in Quantum Dot Cellular Automata Nanotechnology written by K. Sridharan and published by Springer. This book was released on 2015-03-26 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research monograph focuses on the design of arithmetic circuits in Quantum Dot Cellular Automata (QCA). Using the fact that the 3-input majority gate is a primitive in QCA, the book sets out to discover hitherto unknown properties of majority logic in the context of arithmetic circuit designs. The pursuit for efficient adders in QCA takes two forms. One involves application of the new results in majority logic to existing adders. The second involves development of a custom adder for QCA technology. A QCA adder named as hybrid adder is proposed and it is shown that it outperforms existing multi-bit adders with respect to area and delay. The work is extended to the design of a low-complexity multiplier for signed numbers in QCA. Furthermore the book explores two aspects unique to QCA technology, namely thermal robustness and the role of interconnects. In addition, the book introduces the reader to QCA layout design and simulation using QCADesigner. Features & Benefits: This research-based book: ·Introduces the reader to Quantum Dot Cellular Automata, an emerging nanotechnology. ·Explores properties of majority logic. ·Demonstrates application of the properties to design efficient arithmetic circuits. ·Guides the reader towards layout design and simulation in QCADesigner.

Download or read book Low Power Designs in Nanodevices and Circuits for Emerging Applications written by Shilpi Birla and published by CRC Press. This book was released on 2023-11-14 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference textbook discusses low power designs for emerging applications. This book focuses on the research challenges associated with theory, design, and applications towards emerging Microelectronics and VLSI device design and developments, about low power consumptions. The advancements in large-scale integration technologies are principally responsible for the growth of the electronics industry. This book is focused on senior undergraduates, graduate students, and professionals in the field of electrical and electronics engineering, nanotechnology. This book: • Discusses various low power techniques and applications for designing efficient circuits. • Covers advance nanodevices such as FinFETs, TFETs, CNTFETs. • Covers various emerging areas like Quantum-Dot Cellular Automata Circuits and FPGAs and sensors. • Discusses applications like memory design for low power applications using nanodevices. The number of options for ICs in control applications, telecommunications, high-performance computing, and consumer electronics continues to grow with the emergence of VLSI designs. Nanodevices have revolutionized the electronics market and human life; it has impacted individual life to make it more convenient. They are ruling every sector such as electronics, energy, biomedicine, food, environment, and communication. This book discusses various emerging low power applications using CMOS and other emerging nanodevices.

Download or read book Robust Circuit Architecture Design in the Nanoscale Regime written by Rehman Ashraf and published by . This book was released on 2011 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon based integrated circuit (IC) technology is approaching its physical limits. For sub 10nm technology nodes, the carbon nanotube (CNT) based field effect transistor has emerged as a promising device because of its excellent electronic properties. One of the major challenges faced by the CNT technology is the unwanted growth of metallic tubes. At present, there is no known CNT fabrication technology which allows the fabrication of 100% semiconducting CNTs. The presence of metallic tubes creates a short between the drain and source terminals of the transistor and has a detrimental impact on the delay, static power and yield of CNT based gates. This thesis will address the challenge of designing robust carbon nanotube based circuits in the presence of metallic tubes. For a small percentage of metallic tubes, circuit level solutions are proposed to increase the functional yield of CNT based gates in the presence of metallic tubes. Accurate analytical models with less than a 3% inaccuracy rate are developed to estimate the yield of CNT based circuit for a different percentage of metallic tubes and different drive strengths of logic gates. Moreover, a design methodology is developed for yield-aware carbon nanotube based circuits in the presence of metallic tubes using different CNFET transistor configurations. Architecture based on regular logic bricks with underlying hybrid CNFET configurations are developed which gives better trade-offs in terms of performance, power, and functional yield. In the case when the percentage of metallic tubes is large, the proposed circuit level techniques are not sufficient. Extra processing techniques must be applied to remove the metallic tubes. The tube removal techniques have trade-offs, as the removal process is not perfect and removes semiconducting tubes in addition to removing unwanted metallic tubes. As a result, stochastic removal of tubes from the drive and fanout gate(s) results in large variation in the performance of CNFET based gates and in the worst case open circuit gates. A Monte Carlo simulation engine is developed to estimate the impact of the removal of tubes on the performance and power of CNFET based logic gates. For a quick estimation of functional yield of logic gates, accurate analytical models are developed to estimate the functional yield of logic gates when a fraction of the tubes are removed. An efficient tube level redundancy (TLR) is proposed, resulting in a high functional yield of carbon nanotube based circuits with minimal overheads in terms of area and power when large fraction of tubes are removed. Furthermore, for applications where parallelism can be utilized we propose to increase the functional yield of the CNFET based circuits by increasing the logic depth of gates.

Download or read book Very large scale integration of Complementary Carbon Nanotube Field effect Transistors written by Christian Lee Lau and published by . This book was released on 2020 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electronics is approaching a major paradigm shift as silicon transistor scaling no longer yields historical energy-efficiency benefits, spurring research towards beyond-silicon nanotechnologies. In particular, carbon nanotube field-effect transistor (CNFET)-based digital circuits promise substantial energy-efficiency benefits, but the inability to (1) fabricate complementary metal–oxide–semiconductor (CMOS) CNFET circuits that integrate both PMOS and NMOS CNFETs and (2) perfectly control intrinsic nanoscale defects and variability in carbon nanotubes has precluded the realization of very-large-scale integrated CMOS systems. Here we propose and experimentally demonstrate a comprehensive manufacturing methodology for CNTs, which encompasses a set of original processing and circuit design techniques that are combined to overcome all of these intrinsic CNT challenges (variability, manufacturing defects, and material defects) across full industry-standard large-area substrates. As a demonstration of the feasibility of implementing this manufacturing methodology, we experimentally demonstrate the world’s first microprocessor built from a beyond-silicon emerging nanotechnology: RV16X-NANO. This 16-bit microprocessor is based on the RISC-V instruction set, runs standard 32-bit instructions on 16-bit data and addresses, comprises more than 14,000 CMOS CNFETs and is designed and fabricated using industry-standard design flows and processes. This work is a major advance for carbon nanotube-based electronics, and more broadly experimentally validates a promising path towards realizing practical next-generation beyond-silicon electronic systems.

Download or read book Variation aware Design of Carbon Nanotube Digital VLSI Circuits written by Jie Zhang and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotube Field Effect Transistors (CNFETs) are excellent candidates for building highly energy-efficient future electronic systems. Variations specific to carbon nanotubes (CNTs) pose major obstacles to energy-efficient and robust CNFET digital VLSI. CNFET circuits can suffer from large performance variations, reduced yield, and increased susceptibility to noise. CNT processing techniques alone are inadequate to overcome these challenges. We present an integrated approach, combining CNFET modeling, processing and circuit design, to create VLSI circuits tolerant to CNT variations. Probabilistic models, calibrated using experimental data, are used to analyze the effects of two major sources of CNT variations: metallic CNTs (CNTs with no / very small bandgaps) and grown CNT density variations (due to the non-uniformity in CNT positioning). Using these models, we create a probabilistic framework to derive simple yet useful CNFET processing and circuit design guidelines to overcome CNT variations. The effectiveness of this approach is demonstrated using two examples: 1. CNT variations result in functional failures of CNFET circuits. The failure probability may be reduced through CNFET sizing but at substantial energy costs. A new layout design technique, which engineers correlation among various CNFETs, reduces CNFET circuit failure probability at significantly lower costs. 2. For the first time, the impact of CNT variations on delay variations of CNFET circuits is quantified. We explore the space of CNFET sizing, together with various possibilities to improve CNFET processing, to minimize circuit delay variations at low energy costs.