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Atomistic Modeling of the Mechanical Properties of Nanostructured Materials
Online Presentations | 16 Apr 2007 | Contributor(s):: SeongJun Heo, Susan Sinnott
The mechanical properties of carbon nanotubes are studied by using classical molecular dynamics simulations. Especially, the effects of filling, temperature, and functionalization on CNT's tensional and twisting properties are considered in this study.
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Orientational Dependence of Friction in Polyethylene
Online Presentations | 16 Apr 2007 | Contributor(s):: SeongJun Heo
The frictional properties of polyethylene polymer are investigated by using classical molecular dynamics simulations. Especially, the sliding orientational effect is considered in this study. The results of polyethylene are also compared to those of polytetrafluoroethylene(PTFE).
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High-Aspect-Ratio Micromachining of Titanium: Enabling New Functionality and Opportunity in Micromechanical Systems Through Greater Materials Selection
Online Presentations | 09 Apr 2007 | 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 silicon. While silicon has proven to be an excellent material for many of these applications, no...
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Fouling Mechanisms in Y-shaped Carbon Nanotubes
Online Presentations | 04 Apr 2007 | Contributor(s):: Jason Myers, SeongJun Heo, Susan Sinnott
In the modern pharmaceutical and chemical industries, solutions of extremely high purity are needed. Current filtration methods are reaching the limits of their abilities, so new filters must be developed. One possible filter is a Y-shaped carbon nanotube (Y-tube). By changing the sizes of the...
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MSE 376 Lecture 19: Nanoelectromechanical Systems, part 2
Online Presentations | 31 Mar 2007 | Contributor(s):: Mark C. Hersam
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MSE 376 Lecture 18: Nanoelectromechanical Systems, part 1
Online Presentations | 31 Mar 2007 | Contributor(s):: Mark C. Hersam
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Highly Efficient Thermal Transport: The Application of Carbon Nanotube Array Interfaces
Online Presentations | 01 Feb 2007 | Contributor(s):: Baratunde A. Cola
Carbon nanotubes (CNTs) have received much attention in recent years for their extraordinary properties that through careful engineering may be leverage for the development of numerous advantageous applications. However, to date, only few CNT based applications exist in the market place. So when...
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RF MEMS: Passive Components and Architectures
Online Presentations | 02 Jan 2007 | Contributor(s):: Dimitrios Peroulis
This seminar is an introduction to the MEMS technology as itapplies to RF and Microwave systems. Besides discussing several key RFMEMS components (switches, varactors, inductors), reconfigurable circuitarchitectures will also be introduced. In addition, reliability and costconsiderations as...
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Understanding Phonon Dynamics via 1D Atomic Chains
Online Presentations | 04 Apr 2006 | Contributor(s):: Timothy S Fisher
Phonons are the principal carriers of thermal energy in semiconductors and insulators, and they serve a vital role in dissipating heat produced by scattered electrons in semiconductor devices. Despite the importance of phonons, rigorous understanding and inclusion of phonon dynamics in...
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Chemical Modification of GaAs with TAT Peptide and Alkylthiol Self-Assembled Monolayers
Online Presentations | 03 Aug 2006 | Contributor(s):: Hamsa Jaganathan
The use of self-assembled monolayers (SAM) on semiconductors creates a basis for the design and creation of bioelectronics, such as biosensors. The interface between the surface and an organic monolayer can change significant electrical and physiochemical properties of a biological device....
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Nanotubes and Nanowires: One-dimensional Materials
Online Presentations | 17 Jul 2006 | Contributor(s):: Timothy D. Sands
What is a nanowire? What is a nanotube? Why are they 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, quantum confinement, the...
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What is "Nanofluidics"? or The Nano-izing of Fluid Mechanics
Online Presentations | 28 Jun 2006 | Contributor(s):: Steve Wereley
Micro- and nanoscaled fluid mechanics are rapidly emerging as important supporting fields in biomedical technology, nanotechnology, etc., as well as being important fields of study in their own right. Despite the common use of these terms in the literature, the fluid behavior at these small...
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Molecular Dynamics Simulations with the Second-Generation Reactive Empirical Bond Order (REBO) Potential
Online Presentations | 02 Apr 2006 | Contributor(s):: Wen-Dung Hsu, Susan Sinnott
In this presentation, the molecular dynamics (MD) simulation will be introduced first. The applications of MD simulation, the procedure of MD simulation and some speed-up methods in MD simulation will be talked. Then the bond order potentials which are capable to predict bond breaking and new...
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Establishing a Nanotechnology Business
Online Presentations | 24 Apr 2006 | Contributor(s):: Daniel Coy
There are several fundamental needs to consider when transitioning nanotechnology discovery into a business and, ultimately, the marketplace. These needs include steady cash flow, market focus, the right pool of skills, correct timing, and adequate funding. Developers of a nanotechnology...
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First Principles-Based Modeling of materials: Towards Computational Materials Design
Online Presentations | 20 Apr 2006 | Contributor(s):: Alejandro Strachan
Molecular dynamics (MD) simulations with accurate, first principles-based interatomic potentials is a powerful tool to uncover and characterize the molecular-level mechanisms that govern the chemical, mechanical and optical properties of materials. Such fundamental understanding is critical to...
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EDA Challenges in Nanoscale Design: A Synopsys Perspective
Online Presentations | 11 Apr 2006 | Contributor(s):: Rich Goldman
Rich Goldman gives an overview of the current state ofthe semiconductor and EDA (Electronic Design Automation) industry with aspecial focus on the impact of nanometer scale design on design tools andthe economics of the industry.
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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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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...