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 knowledge …

https://nanohub.org/answers/question/2

Finite Size Scaling and Quantum Criticality

09 May 2007 | Online Presentations | Contributor(s): Sabre Kais

The study of quantum phase transitions, which are driven by quantum fluctuations as a consequence of Heisenberg's uncertainty principle, continues to be of increasing interest in the fields of …

https://nanohub.org/resources/2663

Quantum Dot - synthesis routes

03 Apr 2007 | Downloads | Contributor(s): Saurabh Madaan

A brief survey of synthesis routes of quantum dots, with more emphasis on epitaxial and colloidal approaches.

https://nanohub.org/resources/2520

Is Seeing Believing? How to Think Visually and Analyze with Both Your Eyes and Brain

26 Mar 2007 | Online Presentations | Contributor(s): David Ebert

This presentation will cover the basic techniques, and some of the available tools, for visualization, and will explain how to avoid miscommunicating information from visualizations.

https://nanohub.org/resources/2512

What Can the TEM Tell You About Your Nanomaterial?

26 Feb 2007 | Online Presentations | 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, …

https://nanohub.org/resources/2359

Atomistic Alloy Disorder in Nanostructures

26 Feb 2007 | Online Presentations | 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 …

https://nanohub.org/resources/2350

Surprises on the nanoscale: Plasmonic waves that travel backward and spin birefringence without magnetic fields

08 Jan 2007 | Online Presentations | 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 …

https://nanohub.org/resources/2256

Nanoparticles in Biology and Materials: Engineering the Interface through Synthesis

29 Jan 2007 | Online Presentations | 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 …

https://nanohub.org/resources/2312

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

21 Nov 2006 | Online Presentations | Contributor(s): Charles L. Geraci

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

https://nanohub.org/resources/2008

NEMO 3D: Intel optimizations and Multiple Quantum Dot Simulations

03 Aug 2006 | Online Presentations | 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, …

https://nanohub.org/resources/1673

A MATLAB code for Hartree Fock calculation of H-H ground state bondlength and energy using STO-4G

08 Aug 2006 | Downloads | 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 non-relativistic treatment of many electron system …

https://nanohub.org/resources/1718

Quantum Transport: Atom to Transistor (Spring 2004)

23 May 2006 | Courses | Contributor(s): Supriyo Datta

The development of "nanotechnology" has made it possible to engineer materials and devices on a length scale as small as several nanometers (atomic distances are ~ 0.1 nm). The properties of such …

https://nanohub.org/resources/1490

Nanotubes and Nanowires: One-dimensional Materials

17 Jul 2006 | Online Presentations | 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 …

https://nanohub.org/resources/1639

Engineering Nanomedical Systems

06 Mar 2006 | Online Presentations | 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) …

https://nanohub.org/resources/1093

Molecular Transport Structures: Elastic Scattering, Vibronic Effects and Beyond

13 Feb 2006 | Online Presentations | Contributor(s): Mark A. 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 …

https://nanohub.org/resources/1018

A Gentle Introduction to Nanotechnology and Nanoscience

13 Feb 2006 | Online Presentations | Contributor(s): Mark A. 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 …

https://nanohub.org/resources/1021

Active Photonic Nanomaterials: From Random to Periodic Structures

06 Feb 2006 | Online Presentations | 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 …

https://nanohub.org/resources/1012

Quantum-dot Cellular Automata (QCA) - Memory Cells

03 Feb 2006 | Animations | Contributor(s): John C. Bean

Scientists and engineers are looking for completely different ways of storing and analyzing information. Quantum-dot Cellular Automata are one possible solution. In computers of the future, …

https://nanohub.org/resources/1006

Quantum-dot Cellular Automata (QCA) - Logic Gates

03 Feb 2006 | Animations | Contributor(s): John C. Bean

An earlier animation described how "Quantum-dot Cellular Automata" (QCAs) could serve as memory cells and wires. This animation contnues the story by describing how QCAs can be made into MAJORITY, …

https://nanohub.org/resources/1005

Designing Nanocomposite Materials for Solid-State Energy Conversion

10 Nov 2005 | Online Presentations | 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 …

https://nanohub.org/resources/832