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Nanofabrication
Online Presentations | 11 Apr 2006 | Contributor(s):: R. Fabian Pease
Nanotechnology comprises the techniques for making things small (<100 nm) — i.e., nanopatterning — and the resulting applications, ranging from the results of undirected nanopatterning such as Goretex, paint, and reactive gold nanoparticles, to those of directed nanopatterning such as...
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The Long and Short of Pick-up Stick Transistors: A Promising Technology for Nano- and Macro-Electronics
Online Presentations | 11 Apr 2006 | Contributor(s):: Muhammad A. Alam
In recent years, there has been enormous interest in the emerging field of large-area macro-electronics, and fabricating thin-film transistors on flexible substrates. This talk will cover recent work in developing a comprehensive theoretical framework to describe the performance of these "pick-up...
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Molecular Dynamics Studies of Gaseous Transport
Online Presentations | 05 Apr 2006 | Contributor(s):: Ki-Ho Lee, Jason Myers, Susan Sinnott
Carbon nanotubes (CNTs) have generated a great deal of interest due to their unique properties. In this study, we examine the transport properties of various nanotubes using REBO-MD to determine the effects of diameter and chirality on transport mode. Both oxygen and methane were diffused through...
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Tutorial on Using Micelle-MD
Online Presentations | 05 Apr 2006 | Contributor(s):: Patrick Chiu, Kunal Shah, Susan Sinnott
This is a tutorial using Micelle-MD. This includes the main capabilities, computation procedure, with format of files generated, and the simulation setup, which includes the material models implemented.
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Mechanical Properties of Surfactant Aggregates at Water-Solid Interfaces
Online Presentations | 05 Apr 2006 | Contributor(s):: Patrick Chiu, Kunal Shah, Susan Sinnott
This is a talk on the mechanical properties of surfactant aggregates at water-solid interfaces using Micelle-MD. This includes silica indentations of micelles with comparison to experimental data and graphite indentation of Micelle.
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A Primer on Scanning Tunneling Microscopy (STM)
Online Presentations | 04 Apr 2006 | Contributor(s):: Ron Reifenberger
Scanning Probe Microscopes and their remarkable ability to provide three-dimensional maps of surfaces at the nanometer length scale have arguably been the most important tool in establishing the world-wide emergence of Nanotechnology. In this talk, the fundamental ideas behind the first scanning...
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Thermal Microsystems for On-Chip Thermal Engineering
Online Presentations | 04 Apr 2006 | Contributor(s):: Suresh V. Garimella
Electro-thermal co-design at the micro- and nano-scales is critical for achieving desired performance and reliability in microelectronic circuits. Emerging thermal microsystems technologies for this application area are discussed, with specific examples including a novel micromechanical...
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Tribological Properties of Carbon Nanotube Bundles
Online Presentations | 03 Apr 2006 | Contributor(s):: SeongJun Heo, Susan Sinnott
The tribological properties of carbon nanotube(CNT) bundles are investigated in this research using classical molecular dynamics(MD) simulations. Bundle of hollow single walled CNT or CNT filled with C60 is placed between two hydrogen-terminated amorphous diamond-like carbon(DLC) substrates. The...
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The Effect of Temperature Control on the Mechanical Behavior of Carbon Nanotubes
Online Presentations | 29 Mar 2006 | Contributor(s):: SeongJun Heo, Susan Sinnott
The effect of thermostat configurations on the mechanical behavior of empty and butane (n-C4H10) filled (10,10) carbon nanotubes (CNTs) is examined using classical, atomistic, molecular dynamics (MD) simulations. In particular, the influence of different types of thermostats, relative numbers of...
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Irradiation and Nanomechanics of Multi-Walled Carbon Nanotubes
Online Presentations | 23 Mar 2006 | Contributor(s):: Sharon Pregler, Susan Sinnott
Irradiation of nanotube structures with electron and ion beams has been used to produce functionalized nanotubes and fundamentally new structures, including junctions. Here, we build on previous studies to investigate the low-energy electron and ion (Ar and CF3) beam irradiation of triple walled...
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Engineering the Fiber-Matrix Interface in Carbon Nanotube Composites
Online Presentations | 23 Mar 2006 | Contributor(s):: Sharon Pregler, Yanhong Hu, Susan Sinnott
Particle depositions on polymer and carbon substrates to induce surface chemical modification are a growing research topic in particle-surface interactions due to localized deposition energy and the high density of molecules impacting the surface. Previous simulations have shown that particle...
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Bending Properties of Carbon Nanotubes
Online Presentations | 21 Mar 2006 | Contributor(s):: SeongJun Heo, Susan Sinnott
The effect of filling carbon nanotubes on the mechanical, especially bending, behavior of empty and filled (10,10) carbon nanotubes (CNTs) is examined using classical, atomistic, molecular dynamics (MD) simulations. In particular, influences of different filling materials like C60 or other CNT...
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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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Metal Oxide Nanowires: Synthesis, Characterization and Device Applications
Online Presentations | 07 Mar 2006 | Contributor(s):: Jia Grace Lu
Various metal oxide nanowires, such as ZnO, SnO2, Fe2O3, In2O3 and Ga2O3, have been synthesized by chemical vapor deposition method. Their structures and properties are characterized by TEM, SEM, XRD, AFM, photoluminescence, photoconductance, scanning surface potential microscopy, and electrical...
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Molecular Transport Structures: Elastic Scattering, Vibronic Effects and Beyond
Online Presentations | 13 Feb 2006 | Contributor(s):: Mark Ratner, Abraham Nitzan, Misha Galperin
Current experimental efforts are clarifying quite beautifully the nature of charge transport in so-called molecular junctions, in which a single molecule provides the channel for current flow between two electrodes. The theoretical modeling of such structures is challenging, because of the...
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Making the Tiniest and Fastest Transistor using Atomic Layer Deposition (ALD)
Online Presentations | 13 Feb 2006 | Contributor(s):: peide ye
Atomic layer deposition (ALD) is an emerging nanotechnology enables the deposit of ultrathin films, one atomic layer by one atomic layer. ALD provides a powerful, new capability to grow or regrow nanoscale ultrathin films of metals, semiconductors and insulators. This presentation introduces ALD...
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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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Active Photonic Nanomaterials: From Random to Periodic Structures
Online Presentations | 06 Feb 2006 | Contributor(s):: Hui Cao
Active photonic nanomaterials, which have high gain or large nonlinearity, are essential to the development of nanophotonic devices and circuits. In this talk, I will provide a review of our recent research activities related to the fabrication of active photonic nanomaterials and the development...
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Designing Nanocomposite Materials for Solid-State Energy Conversion
Online Presentations | 10 Nov 2005 | Contributor(s):: Timothy D. Sands
New materials will be necessary to break through today's performance envelopes for solid-state energy conversion devices ranging from LED-based solid-state white lamps to thermoelectric devices for solid-state refrigeration and electric power generation. The combination of recent materials...
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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...