Home  |  Top News  |  Most Popular  |  Video  |  Multimedia  |  News Feeds  |  Feedback
  Medicine  |  Nature & Earth  |  Biology  |  Technology & Engineering  |  Space & Planetary  |  Psychology  |  Physics & Chemistry  |  Economics  |  Archaeology
Top > Technology & Engineering >
Like Fish on Waves: Electrons Go Surfing

Published: September 22, 2011.
By Ruhr-University Bochum
http://www.ruhr-uni-bochum.de

They were able to define two little quantum dots (QDs), occupied with electrons, in a semiconductor and to select a single electron from one of them using a sound wave, and then to transport it to the neighbouring QD. A single electron "surfs" thus from one quantum dot to the next like a fish on a wave. In semiconductors, this "fish density" is not as high and so the distance between the electrons (fish) is much larger. Targeted transport of individual electrons is possible in the following way: First, a QD is defined between the tips of four electrodes to form this zero-dimensional object, containing some hundred electrons.

The innovation: aligning the fish

It is not possible to differentiate between the electrons "fish", but they can be differently aligned because they rotate like little spinning tops. Wieck already published his vision of an electron directional coupler with two parallel one-dimensional channels, in which the electrons can skip from one to the other channel, 21 years ago.


Read Full Story »


Keywords

Fish, Surface, Electrons, Water, Voltage, Semiconductors, Layer, …

Cluster Centroids (Superclass Keywords)

Spin, Electrons, Transistor, Fish, Current, Spins, Spintronics, Oudheusden, Electron, Devices, Device, Multiferroic, Bunches, Levy, Apply, Island, Articles, Ucla, Wunderlich, Issue, Uwm, Readers, Waves, Tube, Moore, Accumulation, Electric, Motion, Number, Luiten, Physics, Review, Wave, Transistors, Semiconductor, Van, Currents, Layer, Channel, Electrical, Semiconductors, Single-Electron, Individually, Boundaries, Interface, Charge, Silicon, Voltage, Manipulation, Heat, …


More news from Ruhr-University Bochum


Switching Off Anxiety with Light
07 April 2014
Fingerprint of Dissolved Glycine in the Terahertz Range Explained
28 March 2014
Small Peptides as Potential Antibiotics
25 March 2014
Sudden Cardiac Death: Genetic Disease ARVC More Common Than Hitherto Assumed
06 March 2014
Evidence of Harmful Effect of Bisphenol A-based Plastics
10 January 2014
Anti-epilepsy Drugs Can Cause Inflammations
19 December 2013
Neurons Subtract Images And Use the Differences
17 December 2013

Related »

Waves 
7/4/11 

Important Step in the Next Generation of Computing
By University of Cambridge
States 
5/7/11 

Scientists Achieve High Temperature Milestone in Silicon Spintronics
By Naval Research Laboratory
Electrons 
1/23/11 

Curved Carbon for Electronics of the Future
By University of Copenhagen
Spin 
12/23/10 
Texas A&M Professor Helps Develop First High-temp Spin-field-effect Transistor
By Texas A&M University
COLLEGE STATION, Dec. 23, 2010 — An international team of researchers featuring Texas A&M University physicist Jairo Sinova has announced a breakthrough that gives a new spin to semiconductor …
Ucla 
3/6/14 
UCLA Engineering Team Increases Power Efficiency for Future Computer Processors
By University of California - Los Angeles
Have you ever wondered why your laptop or smartphone feels warm when you're using it? That heat is a byproduct of the microprocessors in your device using electric current …
Physics 
3/21/14 
★★ 
Pushing And Pulling: Using Strain to Tune a New Quantum Material
By University of Wisconsin - Milwaukee
Research into a recently discovered class of materials shows they have the necessary characteristics to develop ultra-energy efficient electronics. Topological insulators (TI) are three-dimensional materials that conduct electricity on …
More » 

Most Popular - Technology »
COILS »
Wireless Power Transfer Achieved at 5-meter Distance
NUCLEAR »
Floating Nuclear Plants Could Ride Out Tsunamis
LEDS »
Under Some LED Bulbs Whites Aren't 'Whiter Than White'
MAGNETIC »
Impurity Size Affects Performance of Emerging Superconductive Material
SOTZING »
Better Thermal-imaging Lens from Waste Sulfur
ScienceNewsline  |  About  |  Privacy Policy  |  Feedback  |  Mobile  |  Japanese
The selection and placement of stories are determined automatically by a computer program. All contents are copyright of their owners except U.S. Government works. U.S. Government works are assumed to be in the public domain unless otherwise noted. Everything else copyright ScienceNewsline.