Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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 (Š 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

A step closer to understanding quantum mechanics: Swansea Universityís physicists develop a new quantum simulation protocol October 22nd, 2017

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

Leti Coordinating Project to Develop Innovative Drivetrains for 3rd-generation Electric Vehicles: CEA Techís Contribution Includes Litenís Knowhow in Magnetic Materials and Simulation And Letiís Expertise in Wide-bandgap Semiconductors October 20th, 2017

MIPT scientists revisit optical constants of ultrathin gold films October 20th, 2017

Chemistry

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Graphene/ Graphite

Graphene forged into three-dimensional shapes September 26th, 2017

New quantum phenomena in graphene superlattices September 18th, 2017

Graphene based terahertz absorbers: Printable graphene inks enable ultrafast lasers in the terahertz range September 13th, 2017

Chip Technology

Novel 'converter' heralds breakthrough in ultra-fast data processing at nanoscale: Invention bagged four patents and could potentially make microprocessor chips work 1,000 times faster October 20th, 2017

MIPT scientists revisit optical constants of ultrathin gold films October 20th, 2017

Bringing the atomic world into full color: Researchers turn atomic force microscope measurements into color images October 19th, 2017

Spin current detection in quantum materials unlocks potential for alternative electronics October 15th, 2017

Sensors

MIPT scientists revisit optical constants of ultrathin gold films October 20th, 2017

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 2017

Single Ďsolitonsí promising for optical technologies October 9th, 2017

Two dimensional materials: Advanced molybdenum selenide near infrared phototransistors September 27th, 2017

Discoveries

A step closer to understanding quantum mechanics: Swansea Universityís physicists develop a new quantum simulation protocol October 22nd, 2017

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Novel 'converter' heralds breakthrough in ultra-fast data processing at nanoscale: Invention bagged four patents and could potentially make microprocessor chips work 1,000 times faster October 20th, 2017

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

Announcements

A step closer to understanding quantum mechanics: Swansea Universityís physicists develop a new quantum simulation protocol October 22nd, 2017

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

Leti Coordinating Project to Develop Innovative Drivetrains for 3rd-generation Electric Vehicles: CEA Techís Contribution Includes Litenís Knowhow in Magnetic Materials and Simulation And Letiís Expertise in Wide-bandgap Semiconductors October 20th, 2017

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