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

News and information

Stanford breakthrough heralds super-efficient light-based computers: Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires May 29th, 2015

Donuts, math, and superdense teleportation of quantum information May 29th, 2015

OSU researchers prove magnetism can control heat, sound: Team leverages OSC services to help confirm, interpret experimental findings May 29th, 2015

Two UCSB Professors Receive Early Career Research Awards: The Department of Energy’s award for young scientists acknowledges UC Santa Barbara’s standing as a top tier research institution May 29th, 2015

Global Carbon Nanotubes (CNT) Market Expected To Reach USD 3.42 Billion By 2022 May 29th, 2015

Imaging

Two UCSB Professors Receive Early Career Research Awards: The Department of Energy’s award for young scientists acknowledges UC Santa Barbara’s standing as a top tier research institution May 29th, 2015

Nano-capsules designed for diagnosing malignant tumours: Japanese researchers have developed adaptable nano-capsules that can help in the diagnosis of glioblastoma cells - a highly invasive form of brain tumours May 28th, 2015

Graphene

Dr.Theivasanthi Slashes the Price of Graphene Heavily: World first & lowest price – Nano-price (30 USD / kg) of graphene by nanotechnologist May 26th, 2015

Haydale Named Lead Sponsor for Cambridge Graphene Festival May 22nd, 2015

Record high sensitive Graphene Hall sensors May 21st, 2015

Simulations predict flat liquid May 21st, 2015

Discoveries

Stanford breakthrough heralds super-efficient light-based computers: Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires May 29th, 2015

Donuts, math, and superdense teleportation of quantum information May 29th, 2015

OSU researchers prove magnetism can control heat, sound: Team leverages OSC services to help confirm, interpret experimental findings May 29th, 2015

New technique speeds nanoMRI imaging: Multiplexing technique for nanoscale magnetic resonance imaging developed by researchers in Switzerland cuts normal scan time from two weeks to two days May 28th, 2015

Materials/Metamaterials

SouthWest NanoTechnologies Introduces AgeNT™ Transparent Conductor System at SID Display Week, Booth #543 May 28th, 2015

Physicists precisely measure interaction between atoms and carbon surfaces May 28th, 2015

Linking superconductivity and structure May 28th, 2015

Controlled Release of Anticorrosive Materials in Spot by Nanocarriers May 27th, 2015

Announcements

Stanford breakthrough heralds super-efficient light-based computers: Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires May 29th, 2015

Donuts, math, and superdense teleportation of quantum information May 29th, 2015

OSU researchers prove magnetism can control heat, sound: Team leverages OSC services to help confirm, interpret experimental findings May 29th, 2015

Two UCSB Professors Receive Early Career Research Awards: The Department of Energy’s award for young scientists acknowledges UC Santa Barbara’s standing as a top tier research institution May 29th, 2015

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

Stanford breakthrough heralds super-efficient light-based computers: Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires May 29th, 2015

Donuts, math, and superdense teleportation of quantum information May 29th, 2015

OSU researchers prove magnetism can control heat, sound: Team leverages OSC services to help confirm, interpret experimental findings May 29th, 2015

Global Carbon Nanotubes (CNT) Market Expected To Reach USD 3.42 Billion By 2022 May 29th, 2015

Tools

Two UCSB Professors Receive Early Career Research Awards: The Department of Energy’s award for young scientists acknowledges UC Santa Barbara’s standing as a top tier research institution May 29th, 2015

Seeing the action: UCSB researchers develop a novel device to image the minute forces and actions involved in cell membrane hemifusion May 27th, 2015

Physicists solve quantum tunneling mystery: ANU media release: An international team of scientists studying ultrafast physics have solved a mystery of quantum mechanics, and found that quantum tunneling is an instantaneous process May 27th, 2015

This Slinky lookalike 'hyperlens' helps us see tiny objects: The photonics advancement could improve early cancer detection, nanoelectronics manufacturing and scientists' ability to observe single molecules May 23rd, 2015

Quantum Dots/Rods

Statement by QD Vision regarding European Parliament’s Vote on Cadmium-Based Quantum Dots May 20th, 2015

Toward 'green' paper-thin, flexible electronics May 20th, 2015

Electricity generating nano-wizards: Quantum dots are an ideal nanolab to study the means to turning heat into electricity May 18th, 2015

QD Vision to Showcase Quantum Dot “Firsts” at Display Week 2015: Executives will present, demo current and future quantum dot technology May 13th, 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