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First Principles-based Atomistic and Mesoscale Modeling of Materials
Online Presentations | 01 Dec 2005 | Contributor(s):: Alejandro Strachan
This tutorial will describe some of the most powerful and widely used techniques for materials modeling including i) first principles quantum mechanics (QM), ii) large-scale molecular dynamics (MD) simulations and iii) mesoscale modeling, together with the strategies to bridge between them. These...
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Designing Nanocomposite Thermoelectric Materials
Online Presentations | 08 Nov 2005 | Contributor(s):: Timothy D. Sands
This tutorial reviews recent strategies for designing high-ZT nanostructured materials, including superlattices, embedded quantum dots, and nanowire composites. The tutorial highlights the challenges inherent to coupled electronic and thermal transport properties.
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Bandstructure in Nanoelectronics
Online Presentations | 01 Nov 2005 | Contributor(s):: Gerhard Klimeck
This presentation will highlight, for nanoelectronic device examples, how the effective mass approximation breaks down and why the quantum mechanical nature of the atomically resolved material needs to be included in the device modeling. Atomistic bandstructure effects in resonant tunneling...
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Wireless Integrated MicroSystems (WIMS): Coming Revolution in the Gathering of Information
Online Presentations | 01 Sep 2005 | Contributor(s):: Kensall D. Wise
Wireless integrated microsystems promise to become pervasive during the coming decade in applications ranging from health care and environmental monitoring to homeland security. Merging low-power embedded computing, wireless interfaces, and wafer-level packaging with microelectromechanical...
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Nanoparticle Synthesis and Assembly for Biological Sensing
Online Presentations | 25 Oct 2005 | Contributor(s):: Gil Lee
Nanoparticles have unique physical and chemical properties that make them very useful for biological and chemical sensing. For example, colloidal gold has been used as an optical transducer for antibody based sensing for over twenty years and is the basis for a many of the point-of-use diagnostic...
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Laser Cooling of Solids
Online Presentations | 06 Oct 2005 | Contributor(s):: Massoud Kaviany
Enhanced laser cooling of ion doped nanocrystalline powders (e.g., Yb3+: Y2O3) can be achieved by enhancing the anti-Stokes, off-resonance absorption, which is proportional to the three design-controlled factors, namely, dopant concentration, pumping field energy, and anti-Stokes transition rate....
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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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Plasmonic Nanophotonics: Coupling Light to Nanostructure via Plasmons
Online Presentations | 03 Oct 2005 | Contributor(s):: Vladimir M. Shalaev
The photon is the ultimate unit of information because it packages data in a signal of zero mass and has unmatched speed. The power of light is driving the photonicrevolution, and information technologies, which were formerly entirely electronic, are increasingly enlisting light to communicate...
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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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Modeling and Simulation of Sub-Micron Thermal Transport
Online Presentations | 26 Sep 2005 | Contributor(s):: Jayathi Murthy
In recent years, there has been increasing interest in understanding thermal phenomena at the sub-micron scale. Applications include the thermal performance of microelectronic devices, thermo-electric energy conversion, ultra-fast laser machining and many others. It is now accepted that Fourier's...
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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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Parallel Computing for Realistic Nanoelectronic Simulations
Online Presentations | 12 Sep 2005 | Contributor(s):: Gerhard Klimeck
Typical modeling and simulation efforts directed towards the understanding of electron transport at the nanometer scale utilize single workstations as computational engines. Growing understanding of the involved physics and the need to model realistically extended devices increases the complexity...
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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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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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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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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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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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Resonant Tunneling of Electrons: Application of Electromagnetic Concepts to Quantum Mechanic Phenomena
Online Presentations | 14 Apr 2005 | Contributor(s):: Greg Huff, Kevin Hietpas
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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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Transistors
Online Presentations | 04 Aug 2004 | Contributor(s):: Mark Lundstrom
The transistor is the basic element of electronic systems. The integrated circuits inside today's personal computers, cell phones, PDA's, etc., contain hundreds of millions of transistors on a chip of silicon about 2 cm on a side. Each technology generation, engineers shrink the size of...