
MCW07 Simple Models for Molecular Transport Junctions
13 Sep 2007   Contributor(s):: , Abraham Nitzan, Mark Ratner
We review our recent research on role of interactions in molecular transport junctions. We consider simple models within nonequilibrium Green function approach (NEGF) in steadystate regime.

Microscaled Biochips with Optically Active Surfaces for Near and Farfield Analysis of Cellular Fluorescence
31 Aug 2007   Contributor(s):: Huw Summers
The integration of thin (< 100 nm) metal films with microscaleoptical waveguides provides a route to controlled spatialexcitation of cellular fluorescence within a biochip platform.Surface bound electronplasma oscillations (surface plasmon waves)interact with photons to produce an...

Quantum Dot Lab Learning Module: An Introduction
02 Jul 2007   Contributor(s):: James K Fodor, Jing Guo
THIS MATERIAL CORRESPONDS TO AN OLDER VERSION OF QUANTUM DOT LAB THAN CURRENTLY AVAILABLE ON nanoHUB.org.

Quantum dots
Open  Responses: 1
What I want to do is building an aluminum quantum dot coupled to
aluminum leads to observe Coulomb Blockade. To form the tunnel barriers
we oxidize the Al in a plasma without any detailed...
http://nanohub.org/answers/question/2

Quantum Dot  synthesis routes
03 Apr 2007   Contributor(s):: Saurabh Madaan
A brief survey of synthesis routes of quantum dots, with more emphasis on epitaxial and colloidal approaches.

What Can the TEM Tell You About Your Nanomaterial?
26 Feb 2007   Contributor(s):: Eric Stach
In this tutorial, I will present a brief overview of the ways that transmission electron microscopy can be used to characterize nanoscale materials. This tutorial will emphasize what TEM does well, as well where difficulties arise. In particular, I will discuss in an overview manner how...

Atomistic Alloy Disorder in Nanostructures
26 Feb 2007   Contributor(s):: Gerhard Klimeck
Electronic structure and quantum transport simulations are typically performed in perfectly ordered semiconductor structures. Bands and modes are defined resulting in quantized conduction and discrete states. But what if the material is fundamentally disordered? What if the disorder is at the...

Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields
08 Jan 2007 
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 nearfield...

Nanoparticles in Biology and Materials: Engineering the Interface through Synthesis
29 Jan 2007 
Monolayerprotected 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...

Nanotechnology and Occupational Safety and Health: What are the Issues, What do we know, and What is NIOSH Doing
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

NEMO 3D: Intel optimizations and Multiple Quantum Dot Simulations
03 Aug 2006   Contributor(s):: Anish Dhanekula, Gerhard Klimeck
NEMO3D 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...

A MATLAB code for Hartree Fock calculation of HH ground state bondlength and energy using STO4G
08 Aug 2006   Contributor(s):: Amritanshu Palaria
Hartree Fock (HF) theory is one of the basic theories underlying the current understanding of the electronic structure of materials. It is a simple nonrelativistic treatment of many electron system that accounts for the antisymmetric (fermion) nature of electronic wavefunction but does not...

Quantum Transport: Atom to Transistor (Spring 2004)
23 May 2006   Contributor(s):: Supriyo Datta
Spring 2004 Please Note: A newer version of this course is now available and we would greatly appreciate your feedback regarding the new format and contents. Course Information Website The development of "nanotechnology" has made it possible to engineer materials and devices...

Nanotubes and Nanowires: Onedimensional Materials
17 Jul 2006 
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 waveparticle duality, quantum confinement, the...

Engineering Nanomedical Systems
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 multisequence process of targeting to rare cells invivo, retargeting to...

Molecular Transport Structures: Elastic Scattering, Vibronic Effects and Beyond
13 Feb 2006   Contributor(s):: Mark Ratner, Abraham Nitzan,
Current experimental efforts are clarifying quite beautifully the nature of charge transport in socalled 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...

A Gentle Introduction to Nanotechnology and Nanoscience
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,...

Active Photonic Nanomaterials: From Random to Periodic Structures
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...

Quantumdot Cellular Automata (QCA)  Memory Cells
03 Feb 2006 
Scientists and engineers are looking for completely different ways of storing and analyzing information. Quantumdot Cellular Automata are one possible solution. In computers of the future, transistors may be replaced by assemblies of quantum dots called Quantumdot Cellular Automata (QCAs).This...

Quantumdot Cellular Automata (QCA)  Logic Gates
03 Feb 2006 
An earlier animation described how "Quantumdot Cellular Automata" (QCAs) could serve as memory cells and wires. This animation contnues the story by describing how QCAs can be made into MAJORITY, OR, AND, and INVERTER logic gates.