Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > News > The worm turns - into graphene

May 31st, 2009

The worm turns - into graphene

Abstract:
Chinese scientists have found a new route to high-quality graphene sheets for making flexible electronics.

Hongwei Zhu and co-workers from Tsinghua University in Beijing developed a three-step process to synthesise the one atom-thick carbon sheets from worm-like expanded graphite (WEG). WEG consists of a tall stack of graphene sheets, expanded, but not fully separated into individual layers. Graphene is expected to eventually replace silicon in a revolutionary new breed of flexible electronics for applications including smart clothing, for example, health-monitoring sensors embedded in fabric, and foldable displays.

To make the WEG precursor, Zhu mixed natural graphite with sulfuric acid. The acid forced the graphite's layers apart to create a structure with graphite layers held together by sulfuric acid molecules. Zhu heated the resulting compound to decompose the acid, which increased the distance between the graphite sheets even further. He then exfoliated, or repeatedly peeled, the WEG product by ultrasonication and centrifugation to produce the single graphene layers. The graphene was not damaged by these processes; in fact, the individual layers produced were shown by Raman spectroscopy to be almost unchanged from their state in the natural graphite precursor.

Source:
rsc.org

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

A first glimpse inside a macroscopic quantum state March 28th, 2015

DFG to Establish One Clinical Research Unit and Five Research Units: New Projects to Investigate Complications in Pregnancy, Particle Physics, Nanoparticles, Implants and Transport Planning / Approximately 13 Million Euros in Funding for an Initial Three-Year Period March 28th, 2015

Chemists make new silicon-based nanomaterials March 27th, 2015

UT Dallas engineers twist nanofibers to create structures tougher than bulletproof vests March 27th, 2015

Display technology/LEDs/SS Lighting/OLEDs

Haydale Announce Dedicated Graphene Inks Manufacturing Capability March 25th, 2015

Caltech scientists develop cool process to make better graphene March 18th, 2015

Engineers create chameleon-like artificial 'skin' that shifts color on demand March 12th, 2015

Breakthrough in OLED technology March 2nd, 2015

Possible Futures

Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015

Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015

Nanocomposites Market Growth, Industry Outlook To 2020 by Grand View Research, Inc. March 21st, 2015

Nanotechnology Drug Delivery Market in the US 2012-2016 : Latest Report Available by Radiant Insights, Inc March 16th, 2015

Sensors

UW scientists build a nanolaser using a single atomic sheet March 24th, 2015

Iranian Researchers Present Model to Determine Dynamic Behavior of Nanostructures March 24th, 2015

Nanodevice Invented in Iran to Detect Hydrogen Sulfide in Oil, Gas Industry March 20th, 2015

LamdaGen Corporation Launches Taiwan Diagnostic Subsidiary March 19th, 2015

Discoveries

A first glimpse inside a macroscopic quantum state March 28th, 2015

UT Dallas engineers twist nanofibers to create structures tougher than bulletproof vests March 27th, 2015

Novel nanoparticle therapy promotes wound healing March 27th, 2015

Designer's toolkit for dynamic DNA nanomachines: Arm-waving nanorobot signals new flexibility in DNA origami March 27th, 2015

Announcements

A first glimpse inside a macroscopic quantum state March 28th, 2015

DFG to Establish One Clinical Research Unit and Five Research Units: New Projects to Investigate Complications in Pregnancy, Particle Physics, Nanoparticles, Implants and Transport Planning / Approximately 13 Million Euros in Funding for an Initial Three-Year Period March 28th, 2015

Designer's toolkit for dynamic DNA nanomachines: Arm-waving nanorobot signals new flexibility in DNA origami March 27th, 2015

Using magnetic fields to understand high-temperature superconductivity: Los Alamos explores experimental path to potential 'next theory of superconductivity' March 27th, 2015

Textiles/Clothing

Scientists discover gecko secret March 16th, 2015

Energy-generating cloth could replace batteries in wearable devices March 4th, 2015

Australian startup creates world’s first 100% cotton hydrophobic T-Shirts February 3rd, 2015

Graphene displays clear prospects for flexible electronics February 2nd, 2015

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 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE