Nanotechnology Now

• About Us
  
  • Advertising
  • Our Mission
  • Our Team
  • Comments
  • Friends
  • Contact
• Nanotechnology
• News
  
  • Current News
  • Press Releases
  • Submit Press
  • Press kit
  • Interviews
• Columns
• Products
  
  • Our Products
  • Books
  • Featured Books
• Directories
  
  • Companies/Academic
  • Events
  • Glossary
  • Best Of
• Career Center
• Nano-Social Network
• Nano Consulting
• My Account

Home > News > A New Model of Quantum Dots: Rethinking the Electronics

June 16th, 2005

A New Model of Quantum Dots: Rethinking the Electronics

Abstract:
Quantum dots, tiny crystals consisting of a few hundred to a few thousand atoms, sparkle with promise for uses ranging from tagging proteins in living cells to foiling counterfeiters to enabling quantum computers. The optics and electronics of these semiconductor nanocrystals are dramatically different from the same materials in bulk. But it turns out that one of the most important electronic properties of quantum dots has been misunderstood for over a decade.

Theorists at the Department of Energy's Lawrence Berkeley National Laboratory have shown that a quantum dot's dielectric function (a term indicating how charge responds to an electric field) does not depend on its band gap, as researchers long believed. On the contrary, the dielectric function of a quantum dot, measured on the microscopic scale, is virtually the same as that of the bulk material -- except near the dot's surface.

Source:
LBL

Bookmark:

Related News Press

Possible Futures

Lifeboat publishes its first book: The Lifeboat Foundation has published its first book, "The Human Race to the Future: What Could Happen -- and What to Do" May 14th, 2013

UC Santa Barbara History Professor's Book Elucidates, Celebrates ‘Visioneers' May 14th, 2013

Conceptual Nanomedical Lipofuscin Removal Strategy April 29th, 2013

The Global Desalination Market 2013-2023 April 24th, 2013

Discoveries

UofL scientists uncover how grapefruits provide a secret weapon in medical drug delivery May 22nd, 2013

Atomic-Scale Investigations Solve Key Puzzle of LED Efficiency: MIT and Brookhaven Lab scientists use electron microscopy imaging techniques to settle a solid-state controversy and raise new experimental possibilities May 22nd, 2013

Single-Cell Transfection Tool Enables Added Control for Biological Studies: McCormick researchers develop method of delivering molecules into targeted cells May 22nd, 2013

How Gold Nanoparticles Can Help Fight Ovarian Cancer May 21st, 2013

Announcements

UofL scientists uncover how grapefruits provide a secret weapon in medical drug delivery May 22nd, 2013

Atomic-Scale Investigations Solve Key Puzzle of LED Efficiency: MIT and Brookhaven Lab scientists use electron microscopy imaging techniques to settle a solid-state controversy and raise new experimental possibilities May 22nd, 2013

Single-Cell Transfection Tool Enables Added Control for Biological Studies: McCormick researchers develop method of delivering molecules into targeted cells May 22nd, 2013

Rice unveils method for tailoring optical processors: Arranging nanoparticles in geometric patterns allows for control of light with light May 21st, 2013