Quantum Dots

By Gerhard Klimeck

Purdue University

Published on

Abstract

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 opportunities in optical sensors, lasers, and advanced electronic devices for memory and logic. This seminar starts with an overview of wavelike and particle like properties and motivates the existence of quantum mechanics. It closes the quantum mechanics point of view with these new fascinating artificial atoms.

Quantum Dot Lab version 1.x ran NEMO-3D. Starting from version 2.0, the underlying engine is NEMO 5, a code under development in the research group of Gerhard Klimeck.

Bio

Gerhard Klimeck Gerhard Klimeck is the Technical Director of the Network for Computational Nanotechnology at Purdue University and a Professor of Electrical and Computer Engineering since Dec. 2003. He was the Technical Group Supervisor for the Applied Cluster Computing Technologies Group at the NASA Jet Propulsion Laboratory. His research interest is in the modeling of nanoelectronic devices, parallel cluster computing, genetic algorithms, and parallel image processing. Gerhard developed the Nanoelectronic Modeling tool (NEMO 3-D) for multimillion atom simulations and continues to expand NEMO 1-D. Previously he was a member of technical staff at the Central Research Lab of Texas Instruments where he served as manager and principal architect of the Nanoelectronic Modeling (NEMO 1-D) program. Dr. Klimeck received his Ph.D. in 1994 from Purdue University and his German electrical engineering degree in 1990 from Ruhr-University Bochum. Dr. Klimeck's work is documented in over 130 peer-reviewed publications and over 200 conference presentations. He is a senior member of IEEE and member of APS, HKN and TBP. More information about his work can be found at http://cobweb.ecn.purdue.edu/~gekco

Cite this work

Researchers should cite this work as follows:

  • Gerhard Klimeck (2005), "Quantum Dots," https://nanohub.org/resources/189.

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Time

Location

Purdue University, West Lafayette, IN

Tags

Quantum Dots
  • Nano 101 Quantum Dots 1. Nano 101 Quantum Dots 0
    00:00/00:00
  • Presentation Outline 2. Presentation Outline 53.219886553219887
    00:00/00:00
  • Classical Macroscopic Particles 3. Classical Macroscopic Particle… 119.4527861194528
    00:00/00:00
  • Propagating Plane Waves 4. Propagating Plane Waves 215.91591591591592
    00:00/00:00
  • Huygens' Principle 5. Huygens' Principle 350.38371705038372
    00:00/00:00
  • Huygens' Principle 6. Huygens' Principle 359.09242575909246
    00:00/00:00
  • Propagating Plane Waves Light is an Electromagnetic Wave 7. Propagating Plane Waves Light … 368.20153486820158
    00:00/00:00
  • Standing Waves 8. Standing Waves 466.966966966967
    00:00/00:00
  • Frequency Content of Light 9. Frequency Content of Light 648.14814814814815
    00:00/00:00
  • Presentation Outline 10. Presentation Outline 698.29829829829828
    00:00/00:00
  • Strange Experimental Observations The Advent of Quantum Mechanics 11. Strange Experimental Observati… 731.79846513179848
    00:00/00:00
  • Strange Experimental Observations The Advent of Quantum Mechanics 12. Strange Experimental Observati… 970.77077077077081
    00:00/00:00
  • Wave - Particle Duality 13. Wave - Particle Duality 1246.0126793460127
    00:00/00:00
  • More Mind Games 14. More Mind Games 1297.897897897898
    00:00/00:00
  • Presentation Outline 15. Presentation Outline 1349.8164831498166
    00:00/00:00
  • What is a Quantum Dot ? Basic Application Mechanisms 16. What is a Quantum Dot ? Basic … 1365.7991324657992
    00:00/00:00
  • QD Example Implementations 17. QD Example Implementations 1658.7921254587923
    00:00/00:00
  • Quantum Dot Applications 18. Quantum Dot Applications 1832.7994661327996
    00:00/00:00
  • Quantum Dot Applications 2 19. Quantum Dot Applications 2 1907.4407741074408
    00:00/00:00
  • Quantum Dots as Optical Detectors 20. Quantum Dots as Optical Detect… 1964.8314981648316
    00:00/00:00
  • Lighting 21. Lighting 2027.6276276276278
    00:00/00:00
  • Quantum Dots and Single Electronics 22. Quantum Dots and Single Electr… 2055.6222889556225
    00:00/00:00
  • Presentation Outline 23. Presentation Outline 2287.2205538872208
    00:00/00:00
  • NEMO 3-D Technical Approach 24. NEMO 3-D Technical Approach 2312.8128128128128
    00:00/00:00
  • Atomistic Tight-Binding Hamiltonian 25. Atomistic Tight-Binding Hamilt… 2446.7467467467468
    00:00/00:00
  • Nearest-Neighbor sp3d5s* Model 26. Nearest-Neighbor sp3d5s* Model 2482.0487153820486
    00:00/00:00
  • Parallelization and Methods 27. Parallelization and Methods 2627.0270270270271
    00:00/00:00
  • From Beowulf Concept (JPL, Tom Sterling) to Commodity Products in 4 Generations 28. From Beowulf Concept (JPL, Tom… 2655.6222889556225
    00:00/00:00
  • Parallelization Benchmark Apple G5 29. Parallelization Benchmark Appl… 2731.131131131131
    00:00/00:00
  • Some Wavefunctions of a Pyramidal Quantum Dot 30. Some Wavefunctions of a Pyrami… 2790.4237570904238
    00:00/00:00
  • HPC and Visualization NEMO 3-D: Electronic structure for tens of Million Atoms 31. HPC and Visualization NEMO 3-D… 2831.9652986319652
    00:00/00:00
  • Proof of Concept Extraction of Targeted Interior Eigenstates 32. Proof of Concept Extraction of… 2947.681014347681
    00:00/00:00
  • Proof of Concept Extraction of Targeted Interior Eigenstates 33. Proof of Concept Extraction of… 2987.354020687354
    00:00/00:00
  • Presentation Outline 34. Presentation Outline 3030.930930930931
    00:00/00:00
  • Vertically Coupled Two-Dot Molecule 35. Vertically Coupled Two-Dot Mol… 3033.5001668335003
    00:00/00:00
  • Vertically Coupled Seven-Dot Molecule Identical dots 36. Vertically Coupled Seven-Dot M… 3139.1391391391394
    00:00/00:00
  • Vertically Coupled Seven-Dot Molecule Growth asymmetry => Non-identical dots 37. Vertically Coupled Seven-Dot M… 3174.708041374708
    00:00/00:00
  • VolQD Million Atom Volume Rendering on a single GPU 38. VolQD Million Atom Volume Rend… 3209.342676009343
    00:00/00:00
  • VolQD Drilling down into 3-D Volume Data 39. VolQD Drilling down into 3-D V… 3224.6913580246915
    00:00/00:00
  • VolQD Discovery of Surprising Nodal Symmetries 40. VolQD Discovery of Surprising … 3241.6082749416082
    00:00/00:00
  • Presentation Outline 41. Presentation Outline 3285.2185518852189
    00:00/00:00
  • Questions & Answers 42. Questions & Answers 3337.0704037370706
    00:00/00:00