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Quantum dots have a small, countable number of electrons confined in a small space. Their electrons are confined by having a tiny bit of conducting material surrounded on all sides by an insulating material. If the insulator is strong enough, and the conducting volume is small enough, then the confinement will force the electrons to have discrete (quantized) energy levels. These energy levels can influence the device behavior at a macroscopic scale, showing up, for example, as peaks in the conductance. Because of the quantized energy levels, quantum dots have been called "artificial atoms." Neighboring, weakly-coupled quantum dots have been called "artificial molecules."
Learn more about quantum dots from the many resources on this site, listed below. More information on Quantum dots can be found here.
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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 …
Finite Size Scaling and Quantum Criticality
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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 …
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.
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.
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, …
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 …
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 …
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 …
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
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, …
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 …
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 …
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 …
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) …
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 …
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 …
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 …
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, …
Quantum-dot Cellular Automata (QCA) - Logic Gates
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, …
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 …
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