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GNT auf der Hannovermesse

Einzelne Atomlagen des härtesten, leitfähigsten und flexibelsten Materials der Welt haben Prof. Dr. Max Lemme und seine Mitarbeiter Dr. Andreas Bablich und Dipl.-Ing. Daniel Schneider sichtbar gemacht. Der Professor für Graphen-basierte Nanotechnologie zeigt ein-, drei- und fünflagiges Graphen, desweiteren setzt der Wissenschaftler diesen Kohlenstoff in einen Schaltkreis ein, um LEDs zum Leuchten zu bringen. Außerdem demonstriert Prof. Lemme „die flexible Leitfähigkeit von Graphen, welches eine bisher von keinem anderen Material erreichte Zugbelastbarkeit aufweist“. Dazu haben er und sein Team Graphentinte auf bedruckbare Folie aufgebracht, diese Tinte ist zugleich Teil eines Stromkreislaufs, zudem drückt ein Motor die Folie zusammen und zieht sie wieder auseinander. „Ein Metall würde brechen, Graphen bleibt unbeschädigt“, erklärt Prof. Lemme. Mit Hilfe von Graphen hoffen die Wissenschaftler beispielsweise, Handys flexibler zu gestalten oder sie entwickeln Transistoren, um elektronische Schaltkreise schneller zu machen.

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Research published in ACS Nano

A joint paper by partners of the GRADE consortium has just been published online in ACS Nano. The European FP7 project is coordinated by Prof. Lemme of the University of Siegen. The paper is lead by Dr. Lupina from IHP in Frankfurt/Oder, and includes international researchers from

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New 2-D Material Grapene Has Spectacular Properties

Today, 1 April, researchers at the Collio Mountain Research Institute announced the discovery of a new two-dimensional material - grapene - that could one-day rival silicon in computers, steel in cars and chocolate in candybars. (Yes. We know. That’s what they all say.) The new substance exists in flat sheets, connected by strong bonds composed of cellulose and lignin. In bulk form, its natural state, it’s found hanging in chaotically-arranged bunches.

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Paper on graphene ink published in “2D Materials”

We proudly announce the publication of our recent paper titled “Optimizing the optical and electrical properties of graphene ink thin films by laser-annealing” in the Journal “2D Materials” by IOPScience. The laser-annealing method is an enhancement technique to improve the optical and electrical properties of graphene thin films fabricated from graphene dispersion. This has been a collaborative work between the groups of Professor Max Lemme and Professor Peter Haring Bolivar at University of Siegen, as well as Mikael Östling at the KTH-Royal Institute of Technology, Sweden.

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Review paper on graphene CVD growth published

We are proud to announce the publication of a review paper on the growth and transfer of graphene films using chemical vapor deposition. This method allows the upscaling of graphene film size and thus provides a potential way towards commercial graphene products. The paper titled "Chemical vapor deposited graphene: From synthesis to applications" is a collaboration of the Graphene-based Nanotechnology group at the University of Siegen, Germany and colleagues at KTH Royal Institute of Technology in Kista, Sweden. It is published online in the journal physica status solidi (a) and can be found here: http://doi.org/10.1002/pssa.201400049

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