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.
Vema Reddy Bheeram
OctopusPY: Tool for Calculating Effective Mass from Octopus DFT Bandstructures
16 Aug 2021 | | Contributor(s):: Olivia M. Pavlic, Austin D. Fatt, Gregory T. Forcherio, Timothy A. Morgan, Jonathan Schuster
OctopusPY is a Python package supporting manipulation and analytic processing of electronic band structure data generated by the density functional theory (DFT) software Octopus. In particular, this package imports Octopus-calculated band structure for a given material and...
"Turning Fruit Juice into Graphene Quantum Dots" Supplementary Lesson Plans: Going Atomic
15 Nov 2020 | | Contributor(s):: Susan P Gentry, Rachel Altovar
Expanding on the pre-existing resource on nanoHUB: “Turning Fruit Juice into Graphene Quantum Dots” this resource expands on the concepts in the experimental guide to give a comprehensive overview of materials pertaining to concepts and ideas within the...
MODULE 4 - Quantum Mechanics: "Turning Fruit Juice into Graphene Quantum Dots" Supplementary Lesson Plans: Going Atomic
The last and final module in the "Turning Fruit Juice into Graphene Quantum Dots" Supplementary Lesson Plans, studies basic concepts in quantum mechanics such as quantum dots, band gap theory of solids, waves vs. particles, and the photoelectric effect. The activity for this module...
MODULE 1 - Graphene: "Turning Fruit Juice into Graphene Quantum Dots" Supplementary Lesson Plans: Going Atomic
13 Nov 2020 | | Contributor(s):: Susan P Gentry, Rachel Altovar
The first module in "Turning Fruit Juice into Graphene Quantum Dots" Supplementary Lesson Plans, explores the material, graphene, how it was discovered, and the unique properties that it has. The activity paired with this lesson plan re-creates the famous "sticky-tape"...
MODULE 2 - Sizes: "Turning Fruit Juice into Graphene Quantum Dots" Supplementary Lesson Plans: Going Atomic
The next installment of Turning Fruit Juice into Graphene Quantum Dots" Supplementary Lesson Plans delves into the concept of size and how materials and their properties may change at the macro-, micro-, and nanoscale. Activities include viewing images from a microscope to determine...
Maria Salvacion Esmalla
Quantum Dots: Real-world Particles in a Box
15 Jan 2020 | | Contributor(s):: Joyce Allen, NNCI Nano
The purpose of this activity is to show that nanosize particles of a given substance often exhibit different properties and behavior than macro or micro size particles of the same material. The property studied in this activity is the absorption and reflection of light which is based on energy...
Turning Fruit Juice into Graphene Quantum Dots
06 Jan 2020 | | Contributor(s):: John Gomm, NNCI Nano
Graphene, a sub-nanometer thick sheet made of carbon, was isolated just over a decade ago (2004), yet swiftly won the Nobel Prize for Geim and Novoselov in 2010 for its properties of high strength, conductivity, and transparency. Students will replicate the procedure used to isolate graphene...
Spin Quantum Gate Lab
26 Apr 2019 | | Contributor(s):: Tong Wu, Daniel Volya, Jing Guo
Simulate the device-level characteristics of spin-based quantum gates.
Saroj Kanta Patra
Amr Waleed Shalaby
Amy Kate Masreliez, MBA