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On June 30, 1948, AT&T Bell Labs unveiled the transitor to the world, creating a spark of explosive economic growth that would lead into the Information Age. William Shockley led a team of researchers, including Walter Brattain and John Bardeen, who invented the device. Like the existing triode vacuum tube device, the transistor could amplify signals and switch currents on and off, but the transistor was smaller, cheaper, and more efficient. Moreover, it could be integrated with millions of other transistors onto a single chip, creating the integrated circuit at the heart of modern computers.
Today, most transistors are being manufactured with a minimum feature size of 60-90nm--roughly 200-300 atoms. As the push continues to make devices even smaller, researchers must account for quantum mechanical effects in the device behavior. With fewer and fewer atoms, the positions of impurities and other irregularities begin to matter, and device reliability becomes an issue. So rather than shrink existing devices, many researchers are working on entirely new devices, based on carbon nanotubes, spintronics,
molecular conduction, and other nanotechnologies.
Learn more about transistors from the many resources on this site, listed below. Use our simulation tools to simulate performance characteristics for your own devices.
Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields
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08 Jan 2007 |
As nanonphotonics and nanoelectronics are pushed down towards the molecular scale, interesting effects emerge. We discuss how birefringence (different propagation of two polarizations) is manifested and could be useful in the future for two systems: coherent plasmonic transport of near-field...
RF MEMS: Passive Components and Architectures
02 Jan 2007 | | Contributor(s):: Dimitrios Peroulis
This seminar is an introduction to the MEMS technology as itapplies to RF and Microwave systems. Besides discussing several key RFMEMS components (switches, varactors, inductors), reconfigurable circuitarchitectures will also be introduced. In addition, reliability and costconsiderations as...
Design in the Nanometer Regime: Process Variation
28 Nov 2006 | | Contributor(s):: Kaushik Roy
Scaling of technology over the last few decades has produced an exponential growth in computing power of integrated circuits and an unprecedented number of transistors integrated into a single. However, scaling is facing several problems — severe short channel effects, exponential increase in...
Design of CMOS Circuits in the Nanometer Regime: Leakage Tolerance
The scaling of technology has produced exponential growth in transistor development and computing power in the last few decades, but scaling still presents several challenges. These two lectures will cover device aware CMOS design to address power, reliability, and process variations in scaled...
MOSCNT: code for carbon nanotube transistor simulation
14 Nov 2006 | | Contributor(s):: Siyu Koswatta, Jing Guo, Dmitri Nikonov
Ballistic transport in carbon nanotube metal-oxide-semiconductor field-effect transistors (CNT-MOSFETs) is simulated using the Non-equilibrium Green’s function formalism. A cylindrical transistor geometry with wrapped-around gate and doped source/drain regions are assumed. It should be noted...
28 Aug 2006 | | Contributor(s):: Mark Lundstrom
Semiconductor device technology has transformed our world with supercomputers, personal computers, cell phones, ipods, and much more that we now take for granted. Moore's Law, posited by Intel co-founder Gordon Moore in 1965, states that the number of transistors (the basic building blocks of...
24 Feb 2005 |
Nanoelectronic architectures at this point are necessarily speculative: We are still evaluating many different approaches to fabrication and are exploring unconventional devices made possible at the nano scale. This talk will start off with a review of some "classical" crossbar structures using...
Understanding Phonon Dynamics via 1D Atomic Chains
04 Apr 2006 | | Contributor(s):: Timothy S Fisher
Phonons are the principal carriers of thermal energy in semiconductors and insulators, and they serve a vital role in dissipating heat produced by scattered electrons in semiconductor devices. Despite the importance of phonons, rigorous understanding and inclusion of phonon dynamics in...
Three-Dimensional Simulations of Field Effect Sensors for DNA Detection
03 Aug 2006 | | Contributor(s):: Eddie Howell, Gerhard Klimeck
Here, the development of a DNA field-effect transistor (DNAFET) simulator is described. In DNAFETs the gate structure of a silicon on insulator (SOI) field-effect transistor is replaced by a layer of immobilized single-stranded DNA molecules which act as surface probe molecules. When...
Investigation of the Electrical Characteristics of Triple-Gate FinFETs and Silicon-Nanowire FETs
08 Aug 2006 | | Contributor(s):: Monica Taba, Gerhard Klimeck
Electrical characteristics of various Fin field-effect transistors (FinFETs) and silicon-nanowires were analyzed and compared using a modified three-dimensional self-consistent quantum-mechanical simulator in order to investigate device performance. FinFETs have been proposed to fulfill the...
Chemical Modification of GaAs with TAT Peptide and Alkylthiol Self-Assembled Monolayers
03 Aug 2006 | | Contributor(s):: Hamsa Jaganathan
The use of self-assembled monolayers (SAM) on semiconductors creates a basis for the design and creation of bioelectronics, such as biosensors. The interface between the surface and an organic monolayer can change significant electrical and physiochemical properties of a biological device....
Technique for High Spatial Resolution, Focused Electrical Stimulation for Electrically Excitable Tissue
08 Aug 2006 | | Contributor(s):: Matteo Mannino
Cochlear implant devices have made use of electrode pulses as a method of nerve fiber stimulation since their early conception. Electrode stimulation is limiting in both quality and consistency, and a new method is required if significant improvements to implant devices are to be made. By using...
06 Aug 2006 | | Contributor(s):: Margarita Shalaev
DNA is a relatively inexpensive and ubiquitous material that can be used as a scaffold for constructing nanowires. Our research focuses on the manufacturing of DNA-templated, magnetic nanowires. This is accomplished by synthesizing positively-charged metal nanoparticles that self-assemble along...
Surface Analysis of Organic Monlayers Using FTIR and XPS
02 Aug 2006 | | Contributor(s):: Jamie Nipple, Michael Toole, David Janes
Current research concerning self-assembled monolayers (SAM) focuses on the fabrication of microelectronics utilizing a semiconductor/molecule/metal junction. This study seeks to investigate various experimental techniques for creation of organic monolayers by surface analysis techniques...
NEMO 3D: Intel optimizations and Multiple Quantum Dot Simulations
03 Aug 2006 | | Contributor(s):: Anish Dhanekula, Gerhard Klimeck
NEMO-3D is a nanoelectronic modeling tool that analyzes the electronic structure of nanoscopic devices. Nanoelectronic devices such as Quantum Dots (QDs) can contain millions of atoms,. Therefore, simulating their electronic structure, can take up to several days. In order to simulate and...
ECE 612 Nanoscale Transistors (Fall 2006)
08 Aug 2006 | | Contributor(s):: Mark Lundstrom
Additional material related to the topics discussed in this course course is available at https://nanohub.org/courses/NTNanoscale Transistors is a five-week online course that develops a unified framework for understanding essential physics of nanoscale transistors, their important...
ECE 612 Introductory Lecture (Fall 06)
ECE 612 Lecture 1: MOSFET Review
ECE 612 Lecture 3: 1D MOS Electrostatics
Nanotubes and Nanowires: One-dimensional Materials
17 Jul 2006 |
What is a nanowire? What is a nanotube? Why are they interesting and what are their potential applications? How are they made? This presentation is intended to begin to answer these questions while introducing some fundamental concepts such as wave-particle duality, quantum confinement, the...