Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

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

Imaging

How Graphene–based Nanomaterials and Films Revolutionize Science Explained in July 9 Webinar Hosted by Park Systems June 29th, 2015

Keysight Technologies Introduces Ultrafast-Scanning 9500 Atomic Force Microscope: New Integrated Software, Hardware Delivers Unmatched Scan Rates June 29th, 2015

Rice University boots up powerful microscopes: New electron microscopes will capture images at subnanometer resolution June 29th, 2015

Nanowires could be the LEDs of the future June 25th, 2015

News and information

The Hydrogen-Fuel cell will revolutionize the economy of the world: New non-platinum and nanosized catalyst for polymer electrolyte fuel cell June 29th, 2015

June 29th, 2015

Efforts to Use Smart Nanocarriers to Cure Leukemia Yield Promising Results June 29th, 2015

Making new materials with micro-explosions: ANU media release: Scientists have made exotic new materials by creating laser-induced micro-explosions in silicon, the common computer chip material June 29th, 2015

Graphene

Angstron Materials Appoints VP for Business Development And Engineering June 27th, 2015

Spain nanotechnology featured at NANO KOREA 2015 June 26th, 2015

Breakthrough graphene production could trigger revolution in artificial skin development June 25th, 2015

Discoveries

The Hydrogen-Fuel cell will revolutionize the economy of the world: New non-platinum and nanosized catalyst for polymer electrolyte fuel cell June 29th, 2015

June 29th, 2015

Efforts to Use Smart Nanocarriers to Cure Leukemia Yield Promising Results June 29th, 2015

Making new materials with micro-explosions: ANU media release: Scientists have made exotic new materials by creating laser-induced micro-explosions in silicon, the common computer chip material June 29th, 2015

Materials/Metamaterials

Green Chemistry Methods Used in Iran to Produce Zinc Oxide Nanoparticles June 27th, 2015

Spain nanotechnology featured at NANO KOREA 2015 June 26th, 2015

Dais Analytic Unveils New Version of Aqualyte Membrane Technology: Updates to the Basis of the Company's Industry-Changing Nanotechnology Designed to Strengthen Position in Global Air, Energy, and Water Markets June 26th, 2015

Iranian Researchers Synthesize Nanostructures with Controlled Shape, Structure June 25th, 2015

Announcements

The Hydrogen-Fuel cell will revolutionize the economy of the world: New non-platinum and nanosized catalyst for polymer electrolyte fuel cell June 29th, 2015

June 29th, 2015

Efforts to Use Smart Nanocarriers to Cure Leukemia Yield Promising Results June 29th, 2015

Making new materials with micro-explosions: ANU media release: Scientists have made exotic new materials by creating laser-induced micro-explosions in silicon, the common computer chip material June 29th, 2015

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

June 29th, 2015

Efforts to Use Smart Nanocarriers to Cure Leukemia Yield Promising Results June 29th, 2015

Making new materials with micro-explosions: ANU media release: Scientists have made exotic new materials by creating laser-induced micro-explosions in silicon, the common computer chip material June 29th, 2015

Helium 'balloons' offer new path to control complex materials June 27th, 2015

Tools

How Graphene–based Nanomaterials and Films Revolutionize Science Explained in July 9 Webinar Hosted by Park Systems June 29th, 2015

Keysight Technologies Introduces Ultrafast-Scanning 9500 Atomic Force Microscope: New Integrated Software, Hardware Delivers Unmatched Scan Rates June 29th, 2015

Rice University boots up powerful microscopes: New electron microscopes will capture images at subnanometer resolution June 29th, 2015

X-rays and electrons join forces to map catalytic reactions in real-time: New technique combines electron microscopy and synchrotron X-rays to track chemical reactions under real operating conditions June 29th, 2015

Quantum Dots/Rods

Biomanufacturing of CdS quantum dots: A bacterial method for the low-cost, environmentally-friendly synthesis of aqueous soluble quantum dot nanocrystals June 24th, 2015

Iranian Researchers Model, Design Optical Switches June 13th, 2015

Lehigh University researchers unveil engineering innovations at TechConnect 2015: TechConnect is the world's largest accelerator for industry-vetted emerging-technologies ready for commercialization June 11th, 2015

Investigation of Optical Properties of Quantum Dots in Presence of Magnetic, Electrical Fields June 10th, 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