Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Graphene Transistors Introduced by Iranian Scientists

Abstract:
Engineers at Sharif University of Technology, Iran, devised a technique to form energy gaps in graphene energy bands so that they were enabled to switch off electric current in graphene.

Graphene Transistors Introduced by Iranian Scientists

Tehran, Iran | Posted on August 31st, 2009

According to the Iranian Nanotechnology Initiative Council (INIC), Graphene is a 2D crystal structure with hexagonal arrangements composed of carbon atoms also called honeycomb crystal lattice. In this semiconductor, there are no energy gaps between conduction bands and valence bands.

This absence brings about some unique electronic, optical and mechanical properties in graphene which promotes its functions/applications.

In this structure, one can control electrical conductivity by applying voltage on the external gate while the lack of energy gap makes it impossible to cut the conduction.

Behnaz Gharekhanlou, one of the researchers believes that the problem can be tackled by forming energy gaps.

"One way to form energy gaps is to make neutral defects inside graphene crystal. Neutral defects are free spaces shaped by removal of some carbon atoms from graphene network," Gharekhanlou underlined.

She explained that when these defects are built in proper patterns, it is possible to control the formed energy gaps in Dirac dots.

Varying the population or positions of atoms removed from graphene network affects energy gaps. In other words, this can smooth the path to production of electronic pieces based on diodes or transistors made up of graphene.

####

For more information, please click here

Copyright © Fars News Agency

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

University of Manchester selects Anasys AFM-IR for coatings and corrosion research July 30th, 2014

Nature inspires a greener way to make colorful plastics July 30th, 2014

Analytical solutions from Malvern Instruments support University of Wisconsin-Milwaukee researchers in understanding environmental effects of nanomaterials July 30th, 2014

FEI Unveils New Solutions for Faster Time-to-Analysis in Metals Research July 30th, 2014

Chip Technology

A*STAR and industry form S$200M semiconductor R&D July 25th, 2014

A Crystal Wedding in the Nanocosmos July 23rd, 2014

Nanometrics Announces Upcoming Investor Events July 22nd, 2014

Penn Study: Understanding Graphene’s Electrical Properties on an Atomic Level July 22nd, 2014

Discoveries

Watching Schrödinger's cat die (or come to life): Steering quantum evolution & using probes to conduct continuous error correction in quantum computers July 30th, 2014

From Narrow to Broad July 30th, 2014

Optimum inertial design for self-propulsion: A new study investigates the effects of small but finite inertia on the propulsion of micro and nano-scale swimming machines July 29th, 2014

A new way to make microstructured surfaces: Method can produce strong, lightweight materials with specific surface properties July 29th, 2014

Announcements

University of Manchester selects Anasys AFM-IR for coatings and corrosion research July 30th, 2014

Nature inspires a greener way to make colorful plastics July 30th, 2014

Analytical solutions from Malvern Instruments support University of Wisconsin-Milwaukee researchers in understanding environmental effects of nanomaterials July 30th, 2014

FEI Unveils New Solutions for Faster Time-to-Analysis in Metals Research July 30th, 2014

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE