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Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields
Online Presentations | 08 Jan 2007 | Contributor(s):: Daniel Neuhauser
As nanonphotonics and nanoelectronics are pushed down towards the molecular scale, interesting effects emerge. We discuss how birefringence (different propagation of two polarizations) is manifested and could be useful in the future for two systems: coherent plasmonic transport of near-field...
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Nanoparticles in Biology and Materials: Engineering the Interface through Synthesis
Online Presentations | 29 Jan 2007 | Contributor(s):: Vincent Rotello
Monolayer-protected nanoparticles provide versatile tools for nanotechnology. In our research, we use these nanoparticles as building blocks for the creation of functional magnetic and electronic nanocomposite materials. Simultaneously, we are using these particles as scaffolds for biomolecular...
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Nanotechnology and Occupational Safety and Health: What are the Issues, What do we know, and What is NIOSH Doing
Online Presentations | 21 Nov 2006 | Contributor(s):: Chuck L Geraci
Nanotechnology and Occupational Safety and Health: What are the Issues, What do we know, and What is NIOSH Doing
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NEMO 3D: Intel optimizations and Multiple Quantum Dot Simulations
Online Presentations | 03 Aug 2006 | Contributor(s):: Anish Dhanekula, Gerhard Klimeck
NEMO-3D is a nanoelectronic modeling tool that analyzes the electronic structure of nanoscopic devices. Nanoelectronic devices such as Quantum Dots (QDs) can contain millions of atoms,. Therefore, simulating their electronic structure, can take up to several days. In order to simulate and analyze...
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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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Engineering Nanomedical Systems
Online Presentations | 06 Mar 2006 | Contributor(s):: James Leary
This tutorial discusses general problems and approaches to the design of engineered nanomedical systems. One example given is the engineering design of programmable multilayered nanoparticles (PMNP) to control a multi-sequence process of targeting to rare cells in-vivo, re-targeting to...
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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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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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VolQD: Graphics Hardware Accelerated Interactive Visual Analytics of Multi-million Atom Nanoelectronics Simulations
Online Presentations | 13 Dec 2005 | Contributor(s):: Wei Qiao
In this work we present a hardware-accelerated direct volume renderingsystem for visualizing multivariate wave functions in semiconductingquantum dot (QD) simulations. The simulation datacontains the probability density values of multiple electron orbitalsfor up to tens of millions of...
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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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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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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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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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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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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,...