Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Graphene with aroma: New production method broadens the perspectives for an improved use of the "magic material" - many different forms are possible

The cover picture of the scientific journal "Advanced Materials" gives a schematic representation of the conversion of the monolayer of the complex molecule biphenyl thiol in the two-dimensional graphene crystal by electron irradiation and thermal treatment.Fig.: Advanced Materials 25 (2013). Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.
The cover picture of the scientific journal "Advanced Materials" gives a schematic representation of the conversion of the monolayer of the complex molecule biphenyl thiol in the two-dimensional graphene crystal by electron irradiation and thermal treatment.

Fig.: Advanced Materials 25 (2013). Copyright Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.

Abstract:
Graphene, a crystal composed of only one layer of carbon atoms arranged in a regular hexagon, is regarded as a material which is believed to be capable of performing miracles, in particular in the fields of electronics, sensor technology and display technology, but also in metrology. Only four years after the first successful preparation of graphene, its discoverers Geim and Novoselov were therefore awarded a Nobel Prize. As the original preparation method (flaking of single atomic layers of graphite) does not offer a good perspective for broad technological use, many groups of researchers are concentrating very strongly on the development of alternative manufacturing procedures. A completely new and very flexible variant has now been developed by the group of Andrey Turchanin from the University of Bielefeld in cooperation with the University of Ulm and three departments of the Physikalisch-Technische Bundesanstalt (PTB) and this has been published in the scientific journal "Advanced Materials".

Graphene with aroma: New production method broadens the perspectives for an improved use of the "magic material" - many different forms are possible

Bielefeld, Germany | Posted on October 2nd, 2013

In contrast to the conventional methods where graphene is manufactured, for example, by precipitation of carbon atoms from the gas phase or by thermal graphitization of silicon carbide, the scientists selected aromatic molecules as a starting point in this work. As substrates, both copper single-crystals and inexpensive polycrystalline copper foils were used. By irradiation with low-energy electrons and subsequent thermal annealing, it was then possible to convert a self-organized single-layer of the molecule biphenyl thiol, which had precipitated on the copper surface, into graphene.

To investigate the chemical and physical properties of the graphene manufactured in this way, different characterization methods from Ulm and Bielefeld universities and from PTB were applied, for example, scanning tunnelling microscopy, transmission electron microscopy, Raman spectroscopy as well as electric transport measurements at low temperatures and high magnetic fields. All these measurements confirm that graphene of excellent crystalline and electronic quality had actually been manufactured from the aromatic molecule. The flexibility of the electron irradiation, which is possible both over large areas and also with excellent spatial resolution at small, well-defined places, now allows graphene structures of basically any form to be manufactured, e.g. quantum dots, nanoribbons or other nano-geometries with specific functionality. The selection of the temperature in the thermal conversion step also allows the degree of crystallinity and the characteristics of the graphene depending on it to be adjusted.

Additional advantages result from the versatility of the method of self-organized coating. It can be performed with different aromatic molecules which could, for example, also contain doping atoms for electronic doping of the final product. Applied in multiple layers, so-called bi-layer or multi-layer graphene could be manufactured, whose changed electronic band structure expands the potential applications of single-layer graphene. Likewise, other substrates than the copper used here (for example other metals, semiconductors, isolators) can be used. In addition, it should also be possible to manufacture graphene on any three-dimensional surfaces, as molecular self-organization also takes place on curved surfaces. The new manufacturing method broadens the perspectives for an improved use of the "magic material" in such an impressive way that the respective publication was emphasized on the cover sheet of the August issue of the scientific journal "Advanced Materials".

####

For more information, please click here

Contacts:
Franz Josef Ahlers
PTB Department 2.6 Electric Quantum Metrology

49-531-592-2600

PD Dr. Andrey Turchanin
University of Bielefeld
Faculty of Physics
Physics of Super-molecular Systems and Surfaces
Bielefeld Institute for Biophysics and Nanoscience (BINAS)
Universitätsstr. 25
33615 Bielefeld
phone: +49(521) 106-5376

Copyright © Physikalisch-Technische Bundesanstalt (PTB)

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 Links

Original publication

Related News Press

News and information

First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014

Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014

Imaging

A new cheap and efficient method to improve SERS, an ultra-sensitive chemical detection technique October 28th, 2014

Molecular beacons shine light on how cells 'crawl' October 27th, 2014

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

NIST offers electronics industry 2 ways to snoop on self-organizing molecules October 22nd, 2014

Detecting Cancer Earlier is Goal of Rutgers-Developed Medical Imaging Technology: Rare earth nanocrystals and infrared light can reveal small cancerous tumors and cardiovascular lesions October 21st, 2014

Graphene

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

Discoveries

First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014

Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014

Materials/Metamaterials

Production of Biocompatible Polymers in Iran October 30th, 2014

New solar power material converts 90 percent of captured light into heat: SunShot Project aims to make solar cost competitive October 29th, 2014

Watching the hidden life of materials: Ultrafast electron diffraction experiments open a new window on the microscopic world October 27th, 2014

Polymeric Scaffold Recreates Bladder Tissue October 27th, 2014

Announcements

First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014

Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals

First Observation of Electronic Structure in Ag-Rh Alloy Nanoparticles Having Hydrogen Absorbing: Storage Property –Attempting to solve the mystery of why Ag-Rh alloy nanoparticles have a similar property to Pd– October 30th, 2014

Iranians Present Model to Predict Photocatalytic Process in Removal of Pollutants October 30th, 2014

Production of Biocompatible Polymers in Iran October 30th, 2014

Amorphous Coordination Polymer Particles as alternative to classical nanoplatforms for nanomedicine October 30th, 2014

Tools

A new cheap and efficient method to improve SERS, an ultra-sensitive chemical detection technique October 28th, 2014

New Compact SIMS at 61st AVS | Visit us on Booth 311 October 28th, 2014

New nanodevice to improve cancer treatment monitoring October 27th, 2014

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

Quantum Dots/Rods

Journal Nanotechnology Progress International (JONPI), 2014, Volume 5, Issue 1, pp 1-24 October 22nd, 2014

QD Vision Wins Prestigious Presidential Green Chemistry Challenge Award from the U.S. Environmental Protection Agency October 16th, 2014

Ultrafast remote switching of light emission October 2nd, 2014

Platinum meets its match in quantum dots from coal: Rice University's cheap hybrid outperforms rare metal as fuel-cell catalyst October 1st, 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