Find information on common issues.
Ask questions and find answers from other users.
Suggest a new site feature or improvement.
Check on status of your tickets.
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.
Illinois ECE 440 Solid State Electronic Devices, Lecture 4: Energy Bands, Carrier Statistics, Drift
Ranking is calculated from a formula comprised of user reviews and usage data. Learn more ›
19 Aug 2008 | Online Presentations | Contributor(s): Eric Pop
Energy Bands and Carriers Band gaps (lattice and temperature dependence) Band curvature Carrier effective mass University of Illinois at Urbana-Champaign ECE 440: Solid State Electronic Devices
Illinois ECE 440: Solid State Electronic Devices
18 Aug 2008 | Courses | Contributor(s): Eric Pop
The goals of this course are to give the student an understanding of the elements of semiconductor physics and principles of semiconductor devices that (a) constitute the foundation …
Illinois ECE 440 Solid State Electronic Devices, Lecture 2: Crystal Lattices
14 Aug 2008 | Online Presentations | Contributor(s): Eric Pop
Crystal Lattices: Periodic arrangement of atoms Repeated unit cells (solid-state) Stuffing atoms into unit cells Diamond (Si) and zinc blende (GaAs)crystal structures Crystal planes Calculating …
28 May 2008 | Tools | Contributor(s): Feifei Lian, Feifei Lian, Feifei Lian
This tool performs a self-consistent simulation of the current-voltage curve of a metallic single-wall carbon nanotube with Joule heating.
NCN Nano-Devices for Medicine and Biology: Tutorials
19 Jun 2008 | Series
From among the many tutorial lectures available on the nanoHUB, we list a few that convey new approaches to the development of new kinds of devices for applications in medicine and biology.
NCN Nano-Devices for Medicine and Biology: Research Seminars
Many research seminars are available on the nanoHUB. Listed below are a few that discuss new device possiblities.
NCN Nano-Devices for Medicine and Biology: Simulation Tools for Education
Many simulation tools are available on the nanoHUB. The tools have been well-tested and here include supporting materials so that they can be effectively used for education or intelligently used for …
NCN Nano-Devices for Medicine and Biology: Simulation Tools for Research
Many simulation tools are available on the nanoHUB. The tools have been well-tested and here include supporting materials so that they can be effectively used for research. The research tools …
High-Aspect-Ratio Micromachining of Titanium: Enabling New Functionality and Opportunity in Micromechanical Systems Through Greater Materials Selection
18 Jun 2008 | Online Presentations | Contributor(s): Masa Rao
Traditionally, materials selection has been limited in high-aspect-ratio micromechanical applications, due primarily to the predominance of microfabrication processes and infrastructure dedicated to …
04 Jun 2008 | Online Presentations | Contributor(s): Ian Appelbaum
"Electronics" uses our ability to control electrons with electric fields via interaction with their fundamental charge. Because we can manipulate the electric fields within semiconductors, they are …
Nanoscale Opto Thermo Electric Energy Conversion Devices
28 May 2008 | Online Presentations | Contributor(s): Ali Shakouri
We review solid-state devices that allow direct conversion of heat into electricity. We describe fundamental and practical limits of conventional thermoelectric materials. Novel metal-semiconductor …
30 Jan 2008 | Tools | Contributor(s): Kirk H. Bevan
Non-equilibrium Green's Function Density Functional Theory Simulator
Functionalized Nanomaterials at the Interface of Biology and Technology
24 Apr 2008 | Online Presentations | Contributor(s): Dean Ho, NCLT administator
Nanomaterials, such as block copolymeric membranes and nanodiamonds, can be engineered for a broad range of applications in energy and medicine. This presentation will highlight the relevance of …
Nanoelectronic Modeling: Multimillion Atom Simulations, Transport, and HPC Scaling to 23,000 Processors
07 Mar 2008 | Online Presentations | Contributor(s): Gerhard Klimeck
Future field effect transistors will be on the same length scales as “esoteric” devices such as quantum dots, nanowires, ultra-scaled quantum wells, and resonant tunneling diodes. In those …
Quantum and Semi-classical Electrostatics Simulation of SOI Trigates
19 Feb 2008 | Tools | Contributor(s): Hyung-Seok Hahm, Andres Godoy
Generate quantum/semi-classical electrostatic simulation results for a simple Trigate structure
What Promises do Nanotubes and Nanowires Hold for Future Nanoelectronics Applications?
18 Feb 2008 | Online Presentations | Contributor(s): Joerg Appenzeller
Various low-dimensional materials are currently explored for future electronics applications. The common ground for all these structures is that the surface related impact can no longer be ignored …
TCAD Revisited, 2007: An Engineer’s Point of View
19 Dec 2007 | Online Presentations | Contributor(s): Constantin Bulucea
This presentation was one of 13 presentations in the one-day forum, "Excellence in Computer Simulation," which brought together a broad set of experts to reflect on the future of computational …
Reliability Physics of Nanoscale Transistors
27 Nov 2007 | Courses | Contributor(s): Muhammad A. Alam
This course will focus on the physics of reliability of small semiconductor devices. In traditional courses on device physics, we learn how to compute current through a device when a voltage is …
MCW07 Impact of Porphyrin Functional Groups on InAs Gas Sensors
05 Nov 2007 | Online Presentations | Contributor(s): Michael Garcia
Porphyrin molecules are often used for sensor engineering to improve sensitivity and selectivity to specific analytes. It is important to understand how the porphyrin HOMO-LUMO levels deplete …
Silicon Photonics: Opportunity Challenges and Recent Results
02 Nov 2007 | Online Presentations | Contributor(s): Mario Paniccia
The silicon chip has been the mainstay of the electronics industry for the last 40 years and has revolutionized the way the world operates. Today a silicon chip the size of a fingernail contains …
nanoHUB.org, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies.