Featured Research

from universities, journals, and other organizations

Obstinate electrons 'ignore' assumptions and follow another path

Date:
October 24, 2012
Source:
University of Twente
Summary:
The nanowires, which have a cross-sectional area of no more than one square nanometer (a nanometer is one millionth of a millimeter), are attached to a substrate made of the semiconductor germanium. The virtually defect-free nanowires are spaced at intervals of just 1.6 nanometers. This forces electrons to adopt one-dimensional behavior.

Atomic force microscopy image (17 nanometres by 15 nanometres) showing rows of nanowires on a germanium surface.
Credit: Image courtesy of University of Twente

The nanowires, which have a cross-sectional area of no more than one square nanometre (a nanometre is one millionth of a millimetre), are attached to a substrate made of the semiconductor germanium. The virtually defect-free nanowires are spaced at intervals of just 1.6 nanometres. This forces electrons to adopt one-dimensional behaviour.

Related Articles


Parallel or perpendicular

In a recent paper in Nature Physics, German researchers stated that electrons show this behaviour in a direction parallel to the gold nanowires. Their research showed that the "motorway lanes" are located along the gold nanowire "ridges." Japanese researchers responded by stating that the electrons actually move in a direction that is perpendicular to the alignment of the gold nanowires.

Researchers from the Physics of Interfaces and Nanomaterials group, which is headed by Prof. Harold Zandvliet, decided to test these ideas, by creating a spatial image of the electrons' conduction path. So who was right? The Germans were right, to the extent that the electrons do move parallel to the nanowires. However, charge transport takes place in the "troughs" between the nanowires, not along the nanowires themselves.

As a result, the study sheds surprising new light on the behaviour of charge carriers at the atomic scale.


Story Source:

The above story is based on materials provided by University of Twente. Note: Materials may be edited for content and length.


Journal Reference:

  1. R. Heimbuch, M. Kuzmin, H. J. W. Zandvliet. Origin of the Au/Ge(001) metallic state. Nature Physics, 2012; 8 (10): 697 DOI: 10.1038/nphys2414

Cite This Page:

University of Twente. "Obstinate electrons 'ignore' assumptions and follow another path." ScienceDaily. ScienceDaily, 24 October 2012. <www.sciencedaily.com/releases/2012/10/121024050125.htm>.
University of Twente. (2012, October 24). Obstinate electrons 'ignore' assumptions and follow another path. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2012/10/121024050125.htm
University of Twente. "Obstinate electrons 'ignore' assumptions and follow another path." ScienceDaily. www.sciencedaily.com/releases/2012/10/121024050125.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
3D Printed Cookies Just in Time for Christmas

3D Printed Cookies Just in Time for Christmas

Reuters - Innovations Video Online (Dec. 18, 2014) A tech company in Spain have combined technology with cuisine to develop the 'Foodini', a 3D printer designed to print the perfect cookie for Santa. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
First Etihad Superjumbo Flight in December

First Etihad Superjumbo Flight in December

AFP (Dec. 18, 2014) The first flight of Etihad Airways' long-awaited Airbus A380 superjumbo will take place later in December, the Abu Dhabi carrier said Thursday, also announcing its first Boeing 787 Dreamliner route. Duration: 01:09 Video provided by AFP
Powered by NewsLook.com
Ford Expands Air Bag Recall Nationwide

Ford Expands Air Bag Recall Nationwide

Newsy (Dec. 18, 2014) The automaker added 447,000 vehicles to its recall list, bringing the total to more than 502,000. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins