Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > A Physical Route to Highly Crystalline Graphene

Abstract:
From sensors to solar cells, graphene has a range of exciting applications. Most rely on the ideal 2-dimensional structure of graphene, composed entirely of carbon hexagons, which gives graphene its excellent electrical and chemical properties.

A Physical Route to Highly Crystalline Graphene

Posted on July 29th, 2011

The production of high quality graphene sheets is a pressing concern. One approach is to use graphite oxide. However, it must be chemically reduced in order to improve its conductivity. One side effect is the presence of impurities that reduced the crystallinity and electrical conductivity.

Prof. Y. H. Lee and coworkers have used a physical rather than chemical approach to obtain crystalline graphene sheets. They exfoliated graphite oxide in water-based solution and then annealed the resulting sheets at high temperature (1900C) and under high vacuum.

They obtained graphene sheets with a minimal oxygen content (no oxygen peak was observed using XPS) and high conductivity (56 000 S m-1), higher than samples produced using chemical reduction techniques.

####

For more information, please click here

Copyright © John Wiley & Sons

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

Diamonds and quantum information processing on the nano scale August 31st, 2016

Device to control 'color' of electrons in graphene provides path to future electronics August 31st, 2016

Graphene key to growing 2-dimensional semiconductor with extraordinary properties August 30th, 2016

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions August 30th, 2016

Nanocatalysis for organic chemistry: This research article by Dr. Qien Xu et al. is published in Current Organic Chemistry, Volume 20, Issue 19, 2016 August 30th, 2016

Graphene/ Graphite

Device to control 'color' of electrons in graphene provides path to future electronics August 31st, 2016

Sensors

Graphene key to growing 2-dimensional semiconductor with extraordinary properties August 30th, 2016

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Down to the wire: ONR researchers and new bacteria August 18th, 2016

'Sniffer plasmons' could detect explosives: Scientists have proposed a graphene-based spaser that can detect even small amounts of various substances, including explosives August 16th, 2016

Discoveries

Diamonds and quantum information processing on the nano scale August 31st, 2016

Device to control 'color' of electrons in graphene provides path to future electronics August 31st, 2016

Graphene key to growing 2-dimensional semiconductor with extraordinary properties August 30th, 2016

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions August 30th, 2016

Announcements

Diamonds and quantum information processing on the nano scale August 31st, 2016

Device to control 'color' of electrons in graphene provides path to future electronics August 31st, 2016

Graphene key to growing 2-dimensional semiconductor with extraordinary properties August 30th, 2016

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions August 30th, 2016

Energy

New electrical energy storage material shows its power: Nanomaterial combines attributes of both batteries and supercapacitors August 25th, 2016

Lehigh engineer discovers a high-speed nano-avalanche: New findings published in the Journal of Electrochemical Society about the process involving transformations in glass that occur under intense electrical and thermal conditions could lead the way to more energy-efficient glas August 24th, 2016

New flexible material can make any window 'smart' August 23rd, 2016

Researchers reduce expensive noble metals for fuel cell reactions August 22nd, 2016

Solar/Photovoltaic

Let's roll: Material for polymer solar cells may lend itself to large-area processing: 'Sweet spot' for mass-producing polymer solar cells may be far larger than dictated by the conventional wisdom August 12th, 2016

NREL technique leads to improved perovskite solar cells August 11th, 2016

Making a solar energy conversion breakthrough with help from a ferroelectrics pioneer: Philadelphia-based team shows how a ferroelectric insulator can surpass shockley-queisser limit August 9th, 2016

Tiny high-performance solar cells turn power generation sideways August 5th, 2016

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







Car Brands
Buy website traffic