Navigation Links
Like fish on waves: electrons go surfing
Date:9/22/2011

enables the "emission" of individual electrons from the QD, moving them over a specific distance and then detecting them at the neighbouring QD. A distance of four micrometres (μm) was used in the experiment this is twenty times larger than a highly integrated transistor. 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 scientists subsequently send a sound wave along the semiconductor surface using interdigital (like two combs fitted together without touching each other) electrodes to which they apply a radio frequency voltage. This method functions in the opposite way as the electrical discharge of a piezo ignition system in which a crystal is deformed to attain a voltage. The researchers applied voltage to the crystal and thus deform it, and the alternating voltage leads to the formation of a sound wave.

The fish surfs on the wave

In a sample, this wave moves, for example, from left to right through the quantum dot at the velocity of sound inside the crystal at three kilometres per second. Its height is adjusted so that it extracts exactly one "fish" from it. The latter subsequently surfs on the wave in a one-dimensional channel. The "fish" arrives at the neighbouring quantum dot 4 μm to the right thereof. The researchers were able to attain good statistics by repetition of the waves and measurements and thus capable of determining the reliability of the method. During the first experiments, the probability of emission and detection of a single electron with the wave was 96 and 92%, respectively.

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. This is called the "spin" of the electron. For example one can
'/>"/>

Contact: Prof. Dr. Andreas Wieck
andreas.wieck@rub.de
49-234-322-6726
Ruhr-University Bochum
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Material created at Purdue lets electrons dance and form new state
2. Scientists shed light on the private lives of electrons
3. At small scales, tug-of-war between electrons can lead to magnetism
4. Measurement of hot electrons could have solar energy payoff
5. Pitt-led researchers create super-small transistor, artificial atom powered by single electrons
6. Princeton scientists find unusual electrons that go with the flow
7. Stretching single molecules allows precision studies of interacting electrons
8. Elusive hot electrons captured in ultra-thin solar cells
9. Laser pulses control single electrons in complex molecules
10. Latest issue of Science: Nanosonar uses electrons to measure under the surface
11. Latest issue of Science: Nano-sonar uses electrons to measure under the surface
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/26/2014)... -- Theravalues Corporation annuncia con orgoglio il lancio di ... Hi Europe 2014 (dal 2 al 4 dicembre, ... curcumina con la maggiore biodisponibilità di sempre, con una ... dalle norme europee. La curcumina è un ... Curcuma longa ) che è stata associata con attività ...
(Date:11/24/2014)... BUENA, N.J. , Nov. 24, 2014  IGI ... Jersey based specialty generic pharmaceutical company, today ... application (ANDA) to the U.S. Food and Drug Administration ... submissions in 2014 to seven, with eighteen submissions now ... Grenfell-Gardner , President and CEO of the Company, commented, ...
(Date:11/24/2014)... , Nov. 24, 2014  Last week, Representatives ... Butterfield (D-NC) took a bold bipartisan step ... introducing the OPEN Act. Original co-sponsors of the ... The Act will incentivize drug makers and innovators ... diseases and pediatric cancers, which opens the door ...
(Date:11/24/2014)... 2014   First ... Elsevier , a world-leading provider of scientific, ... announce the launch of the latest title in the ... in Food Science . ... a new platform to keep up-to-date with the expanding volume ...
Breaking Biology Technology:La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 2La curcumina con la maggiore biodisponibilità di sempre farà il suo debutto in Europa 3IGI Laboratories, Inc. Announces ANDA Submission 2OPEN Act Introduced to Repurpose Drugs for Rare Diseases 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 3
... Inclinix, Inc. has announced today that it has ... (Nasdaq: DATA ) to offer the most ... device companies globally. , ... DATATRAK,s eClinical(TM) platform to enhance its services as a ...
... Md., April 30 /PRNewswire/ -- ... company developing novel, proprietary antibodies for the treatment of ... will host a conference call and audio webcast on ... (3:00 pm Central European Time) to discuss its financial ...
... Inc. (NASDAQ: AEZS , TSX: AEZ), a ... will announce its first quarter 2009 financial and operating ... The Company will host a conference call and webcast ... 3:30 p.m., Eastern Time. , Participants may access the ...
Cached Biology Technology:DATATRAK International, Inc. Forms Strategic Partnership with Inclinix, Inc. 2DATATRAK International, Inc. Forms Strategic Partnership with Inclinix, Inc. 3DATATRAK International, Inc. Forms Strategic Partnership with Inclinix, Inc. 4Micromet, Inc. to Host Conference Call and Webcast to Report First Quarter 2009 Financial Results on May 6, 2009 2Micromet, Inc. to Host Conference Call and Webcast to Report First Quarter 2009 Financial Results on May 6, 2009 3Micromet, Inc. to Host Conference Call and Webcast to Report First Quarter 2009 Financial Results on May 6, 2009 4
(Date:11/4/2014)... , November 4, 2014   ... vertical market growth   Fuel3D , a ... closed a funding round totaling $6.4 million (£4 million). This ... funding secured earlier this year and paves the way for ... 2015. The funding round was led by Chimera ...
(Date:11/4/2014)... Lithuania , Nov. 4, 2014   ... technologies, today announced that the latest version of ... in the Ongoing MINEX evaluation organized ... of fingerprint algorithms using the INCITS 378 fingerprint ... mandatory requirement in public tenders in ...
(Date:11/3/2014)... Cancer Center study published in this month,s ... describes the activity of a recently discovered communication molecule ... It has been known to limit inflammation and the ... system: IL-37 inhibits the ability of the immune system ... mechanism that underlies IL-37,s effect on the immune system ...
Breaking Biology News(10 mins):Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 2Neurotechnology Places Second in Ongoing MINEX Ranking for Fingerprint Matching Algorithms 3PNAS: From HIV to cancer, IL-37 regulates immune system 2
... the University of California, Santa Cruz and the University ... advanced robotic surgery systems for use by major medical ... of final tests, five of the systems will be ... Hopkins University, University of Nebraska, UC Berkeley, and UCLA, ...
... can blame our taste buds. Our tongues apparently recognize and ... School of Medicine in St. Louis. They have found that variations ... the taste of fat. The study is the first to ... some people may be more sensitive to the presence of fat ...
... topic in health news. Doctors prescribe it for medical reasons, ... And while it,s known that too little iron can result ... neurodegenerative diseases. Now, researchers at UCLA have ... of iron early in life can affect the brain,s physical ...
Cached Biology News:'Open-source' robotic surgery platform going to top medical research labs 2Receptor for tasting fat identified in humans 2Receptor for tasting fat identified in humans 3Receptor for tasting fat identified in humans 4Receptor for tasting fat identified in humans 5Diet counts: Iron intake in teen years can impact brain in later life 2Diet counts: Iron intake in teen years can impact brain in later life 3
Designed for flow cytometric applications intended to identify...
MOUSE ANTI RAT RT1Bu / MOUSE Ia:BIOTIN Immunogen: Rat thymocyte membrane glycoproteins...
MOUSE ANTI GUINEA PIG T-CELLS (PAN):FITC Immunogen: Guinea pig peritoneal T-cells...
MOUSE ANTI RABBIT T LYMPHOCTYES Immunogen: Rabbit Thymocytes...
Biology Products: