Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Graphene and friends: A new method to make 2D materials

http://dx.doi.org/10.1002/anie.201106004|Z. Zeng, Angew. Chem. Int. Ed. ; DOI: 10.1002/anie.201106004
http://dx.doi.org/10.1002/anie.201106004|Z. Zeng, Angew. Chem. Int. Ed. ; DOI: 10.1002/anie.201106004

Abstract:
by Adrian Miller

Although graphene has had materials researcher hearts racing more or less since its discovery, many scientists see it as just the beginning - if other materials could be processed in the same way, they ask, couldn't it mean a revolution in nanodevice design? Imagine a range of two-dimensional materials, each with their own unique thermal, electronic, optical, and mechanical properties, used for a whole host of nanotechnology applications.

Graphene and friends: A new method to make 2D materials

Germany | Posted on November 10th, 2011

The problem with this vision - at least, up until now - is that graphene is the only 2D material that can be reliably and easily synthesized in large enough quantities to be useful for device manufacture. Other compounds, for example MoS2 and WS2, are right up there with graphite in terms of potential, but the groups working on their processing haven't been able to move past small scale methods such as mechanical cleavage ( la Geim and Novoselov) and nanotube "unzipping".

However, that might be about to change - last week, a Singaporean team reported a new process to create large numbers of single-layer nanosheets quickly and efficiently, applicable to any suitable bulk material. By inducing lithiation with an electrochemical setup, the materials can be carefully monitored and put into a state ideal for ultrasonication and exfoliation. In less than six hours, and at room temperatures, their test setup obtained an MoS2 nanosheet yield of 92%.

To demonstrate how useful these sheets could be, the team went on to create a proof-of-concept nitric oxide detector from these single MoS2 layers. As they're electrically conductive over large areas, and act as p-type semiconductors, they respond electronically to different NO concentrations, and the addition of gold electrodes meant that the response could measured. This experimental device showed great promise - a detection limit of 190 ppt, definitely well within the limits for a promising sensing platform.

Other, similar, experiments yielded similar results with WS2, TiS2, and others - even graphene! - and the researchers see their method as one that could be adopted to produce a range of 2D nanosheets, for application in areas such as electronics, catalysis, and sensing.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

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

Evidence mounts for quantum criticality theory: Findings bolster theory that quantum fluctuations drive strange electronic phenomena January 30th, 2015

Everything You Need To Know About Nanopesticides January 30th, 2015

DNA nanoswitches reveal how life's molecules connect: An accessible new way to study molecular interactions could lower cost and time associated with discovering new drugs January 30th, 2015

Crystal light: New light-converting materials point to cheaper, more efficient solar power: University of Toronto engineers study first single crystal perovskites for new solar cell and LED applications January 30th, 2015

Park Systems Announces Innovations in Bio Cell Analysis with the Launch of Park NX-Bio, the only 3-in-1 Imaging Nanoscale Tool Available for Life Science Researchers January 29th, 2015

Graphene

Discovery Channel taps Angstron Materials for segment featuring graphene advances January 29th, 2015

Creating new materials with quantum effects for electronics January 29th, 2015

Graphenea sales more than double in 2014 January 29th, 2015

Researchers Make Magnetic Graphene: UC Riverside research could lead to new multi-functional electronic devices January 27th, 2015

Chemistry

Creating new materials with quantum effects for electronics January 29th, 2015

Chip Technology

Creating new materials with quantum effects for electronics January 29th, 2015

Advantest to Exhibit at SEMICON Korea in Seoul, South Korea February 4-6 Showcasing Broad Portfolio of Semiconductor Products, Technologies and Solutions January 29th, 2015

Nanometrics to Present at the Stifel 2015 Technology, Internet and Media Conference January 27th, 2015

New pathway to valleytronics January 27th, 2015

Sensors

Detection of Heavy Metals in Samples with Naked Eye January 26th, 2015

GS7 Graphene Sensor maybe Solution in Fight Against Cancer January 25th, 2015

Nanosensor Used for Simultaneous Determination of Effective Tea Components January 24th, 2015

Iranian Scientists Produce Graphene-Based Oxygen Sensor January 23rd, 2015

Discoveries

Evidence mounts for quantum criticality theory: Findings bolster theory that quantum fluctuations drive strange electronic phenomena January 30th, 2015

Everything You Need To Know About Nanopesticides January 30th, 2015

DNA nanoswitches reveal how life's molecules connect: An accessible new way to study molecular interactions could lower cost and time associated with discovering new drugs January 30th, 2015

Crystal light: New light-converting materials point to cheaper, more efficient solar power: University of Toronto engineers study first single crystal perovskites for new solar cell and LED applications January 30th, 2015

Announcements

Evidence mounts for quantum criticality theory: Findings bolster theory that quantum fluctuations drive strange electronic phenomena January 30th, 2015

Everything You Need To Know About Nanopesticides January 30th, 2015

DNA nanoswitches reveal how life's molecules connect: An accessible new way to study molecular interactions could lower cost and time associated with discovering new drugs January 30th, 2015

Crystal light: New light-converting materials point to cheaper, more efficient solar power: University of Toronto engineers study first single crystal perovskites for new solar cell and LED applications January 30th, 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