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Electron and Ion Microscopies as Characterization Tools for Nanoscience and Nanotechnology
Online Presentations | 27 Feb 2006 | Contributor(s):: Eric Stach
This tutorial presents a broad overview of the basic physical principles of techniques used in scanning electron microscopy (SEM), as well as their application to understanding processing/structure/property relationships in nanostructured materials. Special emphasis is placed on the capabilities...
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A Gentle Introduction to Nanotechnology and Nanoscience
Online Presentations | 13 Feb 2006 | Contributor(s):: Mark Ratner
While the Greek root nano just means dwarf, the nanoscale has become a giant focus of contemporary science and technology. We will examine the fundamental issues underlying the excitement involved in nanoscale research - what, why and how. Specific topics include assembly, properties,...
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Optimization of Transistor Design for Carbon Nanotubes
Online Presentations | 20 Jan 2006 | Contributor(s):: Jing Guo
We have developed a self-consistent atomistic simulator for CNTFETs.Using the simulator, we show that a recently reported high-performanceCNTFET delivers a near ballistic on-current. The off-state, however, issignificantly degraded because the CNTFET operates like anon-conventional Schottky...
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Atomic Force Microscopy
Online Presentations | 01 Dec 2005 | Contributor(s):: Arvind Raman
Atomic Force Microscopy (AFM) is an indispensible tool in nano science for the fabrication, metrology, manipulation, and property characterization of nanostructures. This tutorial reviews some of the physics of the interaction forces between the nanoscale tip and sample, the dynamics of the...
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An Electrical Engineering Perspective on Molecular Electronics
Online Presentations | 26 Oct 2005 | Contributor(s):: Mark Lundstrom
After forty years of advances in integrated circuit technology, microelectronics is undergoing a transformation to nanoelectronics. Modern day MOSFETs now have channel lengths that are less than 50 nm long, and billion transistor logic chips have arrived. Moore's Law continues, but the end of...
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Semiconductor Interfaces at the Nanoscale
Online Presentations | 17 Oct 2005 | Contributor(s):: David Janes
The trend in downscaling of electronic devices and the need to add functionalities such as sensing and nonvolatile memory to existing circuitry dictate that new approaches be developed for device structures and fabrication technologies. Various device technologies are being investigated,...
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On the Reliability of Micro-Electronic Devices: An Introductory Lecture on Negative Bias Temperature Instability
Online Presentations | 28 Sep 2005 | Contributor(s):: Muhammad A. Alam
In 1930s Bell Labs scientists chose to focus on Siand Ge, rather than better known semiconductors like Ag2S and Cu2S, mostly because of their reliable performance. Their choice was rewarded with the invention of bipolar transistors several years later. In 1960s, scientists at Fairchild worked...
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Quantum Dots
Online Presentations | 21 Jul 2005 | Contributor(s):: Gerhard Klimeck
Quantum Dots are man-made artificial atoms that confine electrons to a small space. As such, they have atomic-like behavior and enable the study of quantum mechanical effects on a length scale that is around 100 times larger than the pure atomic scale. Quantum dots offer application...
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Nanostructure Engineered Sensors for Gas Detection in Space and Terrestrial Applications
Online Presentations | 28 Jul 2005 | Contributor(s):: Jing Li
A nanosensor technology has been developed using single walled carbon nanotubes (SWNTs) on a pair of interdigitated electrodes (IDE) processed with a silicon-based microfabrication and micromachining technique. These sensors have been exposed to nitrogen dioxide, methane, acetone, benzene,...
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A New Terahertz Heterodyne Detector Based on Single-Walled Carbon Nanotubes
Online Presentations | 27 Jul 2005 | Contributor(s):: Sigfrid Yngvesson
We present non-invasive methods for improving the sensitivity of label-free biosensors that offer the advantage of rapid and real-time detection but suffer from relatively low sensitivity. We present detection of cancer markers using the Quartz Crystal Microbalance and demonstrate that 2...
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The Bardeen Transfer Hamiltonian Approach to Tunneling and its Application to STM/Carbon Nanotubes
Online Presentations | 05 May 2004 | Contributor(s):: Peter M. Albrecht, Kyle Adam Ritter, Laura B. Ruppalt
This presentation covers the Bardeen Transfer Hamiltonian approach to tunneling and its application to STM/carbon nanotubes.
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Moore's Law Forever?
Online Presentations | 13 Jul 2005 | Contributor(s):: Mark Lundstrom
This talk covers the big technological changes in the 20th and 21st century that were correctly predicted by Gordon Moore in 1965. Moore's Law states that the number of transistors on a silicon chip doubles every technology generation. In 1960s terms that meant every 12 months and currently...
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Nanomaterials: Quantum Dots, Nanowires and Nanotubes
Online Presentations | 15 Jul 2005 | Contributor(s):: Timothy D. Sands
What is a quantum dot? What is a nanowire? What is a nanotube? Why are these 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,...
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Nanodevices: A Bottom-up View
Online Presentations | 13 Jun 2005 | Contributor(s):: Supriyo Datta
It is common to differentiate between two ways of building a nanodevice: a top-down approach where we start from something big and chisel out what we want and a bottom-up approach where we start from something small like atoms or molecules and assemble what we want.
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Nanoelectronics: The New Frontier?
Online Presentations | 18 Apr 2005 | Contributor(s):: Mark Lundstrom
After forty years of advances in integrated circuit technology, microelectronics is undergoing a transformation to nanoelectronics. Modern day MOSFETs now have channel lengths of only 50 nm, and billion transistor logic chips have arrived. Moore’s Law continues, but the end of MOSFET scaling is...
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Interfacing Carbon Nanotubes with Biological Systems: From Biosensors to Cellular Transporters
Online Presentations | 21 Oct 2004 | Contributor(s):: Hongjie Dai
This talk will discuss two relatively new topics in carbon nanotube research. The first is nanotubes for chemical and biological sensors, an exploration motivated by the ultra high surface area of single walled carbon nanotubes and the need for label free electronic detectors for a wide range of...
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Vertically Aligned Carbon Nanotube for Interconnects and Nanoelectrode Based Biosensors
Online Presentations | 15 Apr 2004 | Contributor(s):: Jun Li
In the past few years, tremendous progress in the growth of carbon nanotubes (CNTs) has been made, which enabled the fabrication of various CNT devices for applications in electronics, biomedical techniques, and chemical/biological sensors. We have established a process to grow vertically aligned...
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Electronic Transport in Semi-conducting Carbon Nanotube Transistor Devices
Online Presentations | 16 Oct 2003 | Contributor(s):: Joerg Appenzeller
Recent demonstrations of high performance carbon nanotube field-effect transistors (CNFETs) highlight their potential for a future nanotube-based electronics. Besides being just a nanometer in diameter, carbon nanotubes offer intrinsic advantages if compared with silicon that are responsible for...
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Nanoelectronics/Mechanics With Carbon Nanotubes
Online Presentations | 26 Feb 2004 | Contributor(s):: Ji-Yong Park
In this talk, I will present efforts to understand electrical/mechanical properties of carbon nanotubes (CNTs) by combining electric transport measurements and the scanning probe microscopy.