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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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Novel Magnetic Materials for Biomolecular Diagnostics
Online Presentations | 28 Jul 2005 | Contributor(s):: Gil Lee, David Janes, Sugata Bhattacharya, Kyung Jae Jeong, D. M. Oh, W. S. Chang
Paramagnetic particles have emerged as important tools for cell sorting,protein separation, and single molecule measurements. The particles used inthese applications must meet the following requirements: uniform in size,highly paramagnetic, stable in physiological salt buffer, functionizable,and...
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Organic Electronics Part I: Chemical Modulation
Online Presentations | 27 Jul 2005 | Contributor(s):: Jiri Janata
Organic semiconductors (OS) have been in the center of attention in at least two areas: in chemical ,sensors and in molecular electronics. Although the chemistry and physics governing them is the same their performance characteristics are apparently measured on different scales. Electrochemical...
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Organic Electronics Part II: Electric Field Modulation
Online Presentations | 28 Jul 2005 | Contributor(s):: Jiri Janata
A solid state platform has been designed and fabricated that allows characterization of candidate organic semiconductor materials used in organic field-effect transistors (OFET). A systematic experimental protocol has been outlined that allows the separation of contribution of contact resistance...
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Probing Silicon-Based Molecular Electronics with Scanning Tunneling Microscopy
Online Presentations | 29 Jul 2005 | Contributor(s):: Mark Hersam
In recent years, substantial progress has occurred in the field of molecular electronics [1]. In this paper, charge transport through molecule-semiconductor junctions is probed with ultra-high vacuum (UHV) scanning tunneling microscopy (STM). The presence of the semiconductor band gap enables new...
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Sensitivity Amplification in Biosensors using Nanoparticles and Enzymatic Macromolecules
Online Presentations | 27 Jul 2005 | Contributor(s):: Cagri Savran
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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Synthetic and Processing Strategies to New Molecular and Polymeric...
Online Presentations | 28 Jul 2005 | Contributor(s):: Antonio Facchetti, Tobin Marks
Recent achievements in the design and synthesis of new arene/heteroaromatic oligomers/molecules functionalized with a variety of phenacyl, alkylcarbonyl, and perfluoroalkylcarbonyl will be presented. These organic semiconductors exhibit low-lying LUMOs allowing efficient electron...
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Top-Metal/Molecular Monolayer Interactions and Final Device Performance
Online Presentations | 28 Jul 2005 | Contributor(s):: Curt A Richter
The top-metal/molecular-monolayer interface is of critical importance in the formation of molecular electronic (ME) devices and test structures. I will discuss two experimental studies of ME devices in which the final device performance can be attributed to top-metal/molecule interactions:...
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Towards Molecular Electronic Circuitry: Selective Deposition of Metals on Patterned ...
Online Presentations | 28 Jul 2005 | Contributor(s):: Amy Walker
We have developed a robust method by which to construct complex two- and three- dimensional structures based on controlling interfacial chemistry. This work has important applications in molecular/organic electronics, sensing, and other technologies. Our method is extensible to many different...
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Tuning of Electronic Properties of Organic Semiconductors...
Online Presentations | 27 Jul 2005 | Contributor(s):: Karin Potje-Kamloth
Intrinsic conducting polymers are key components in organic electronic devices. These materials are also known to be sensitive toward a variety of gases and vapors, which can be exploited by incorporation as chemical sensitive element in a nanoscale sensing system. The molecular interaction...
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A Novel Diagnostic Assay Based On Nanomechanics
Online Presentations | 28 Jul 2005 | Contributor(s):: Marko Dorrestijn
Micro-fabricated silicon cantilevers arrays offer a novel label-free approach where ligand-receptor binding interactions occurring on the sensor generate nanomechanical signals like bending or a change in mass that is optically detected in-situ. We report the detection of multiple unlabelled...
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Scientific Software Development
Online Presentations | 29 Jun 2005 | Contributor(s):: Clemens Heitzinger
The development of efficient scientific simulation codes poses a wide range of problems. How can we reduce the time spent in developing and debugging codes while still arriving at efficient programs? What happens when our codes must interact with existing tools? In recent years, higher-level...
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HPC and Visualization for multimillion atom simulations
Online Presentations | 21 Jun 2005 | Contributor(s):: Gerhard Klimeck
This presentation gives an overview of the HPC and visulaization efforts involving multi-million atom simulations for the June 2005 NSF site visit to the Network for Computational Nanotechnology.
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NCN Cyberinfrastructure Overview
Online Presentations | 21 Jun 2005 | Contributor(s):: Gerhard Klimeck
Presentation of the NCN cyberinfrastructure to the June 2005 NSF review team. The nanoHUB development over 12 months will be presented in a broad overview.
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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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NCN Overview
Online Presentations | 06 Apr 2005 | Contributor(s):: Mark Lundstrom
This presentation is an overview of the Network for Computational Nanotechnology (NCN) presented at the first NCN Student Conference in April 2005. It is intended to give students an understanding of the NCN's vision and mission.
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Nanotechnology-Enabled Direct Energy Conversion
Online Presentations | 25 Mar 2005 | Contributor(s):: Gang Chen
Energy transport in nanostructures differs significantly from macrostructures because of classical and quantum size effects on energy carriers such as on phonons, electrons, photons, and molecules. Nanoscale effects can be tailored to develop more efficient direct energy conversion technologies...
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Computer-Aided Analysis and Design of Bio-molecules
Online Presentations | 10 Mar 2005 | Contributor(s):: Jaydeep Bardhan
Computer simulation of bio-molecules has become a valuable tool for the pharmaceutical industry, promising not only the potential to predict binding affinities for trial drugs, but also the ability to probe molecular interactions in ways that lab experiments cannot. This seminar will present one...
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Self-Heating and Scaling of Silicon Nano-Transistors
Online Presentations | 05 Aug 2004 | Contributor(s):: Eric Pop
The most often cited technological roadblock of nanoscale electronics is the "power problem," i.e. power densities and device temperatures reaching levels that will prevent their reliable operation. Technology roadmap (ITRS) requirements are expected to lead to more heat dissipation problems,...
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Exponential Challenges, Exponential Rewards - The Future of Moore's Law
Online Presentations | 14 Dec 2004 | Contributor(s):: Shekhar Borkar
Three exponentials have been the foundation of today's electronics, which are often taken for granted—namely transistor density, performance, and energy. Moore's Law captures the impact of these exponentials. Exponentially increasing transistor integration capacity, and...