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Graphene

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DIRECTA PLUS S.p.A.
DIRECTA PLUS S.p.A.
Parco Scientifico di ComoNExT Via Cavour 2 Lomazzo, 22074 Italy

Directa Plus is a technological company which develops processes for the production of a new generation of graphene-based nanomaterials targeting existing global markets.

- Develop innovative metal and carbon nanotechnology processes
- Use R&D and collaborate with prestigious universities and commercial partners to refine the technology
- Protect technology with a planned IP strategy

Process Database
Chip schematic. (a) illustrates the bias electrode used for applying the bias potential from the arbitrary function generator and the counter electrodes, which are capacitively coupled to the conductive substrate except for one, which is directly coupled to the ground. Inset (b) shows in detail the finger electrodes in yellow, over which the two-dimensional graphene nanostructures will bridge. The cross section of the finger electrode gap is depicted in (c). Reprinted from Burg BR, Lutolf F, Schneider J, Schirmer NC, Schwamb T, Poulikakos D. 2009. High-yield dielectrophoretic assembly of two-dimensional graphene nanostructures. Applied Physics Letters. 94(5). Permission pending.
High-yield dielectrophoretic assembly of two-dimensional graphene nanostructures

The serial mechanical exfoliation method available can not be used for the assembly of graphene in the large scale. In this process, deposition of ultrathin few-layer (three to ten) graphene oxide, with parallel and controllable assembly, by dielectrophoresis between prefabricated electrodes has been demonstrated.

Process Database
Reprinted with permission from Torrisi F, Hasan T, Wu W, Sun Z, Lombardo A, Kulmala TS, Hsieh GW, Jung S, Bonaccorso F, Paul PJ, Chu D, Ferrari AC. 2012. Inkjet-printed graphene electronics. ACS Nano. Article ASAP. Copyright 2012 American Chemical Society
Inkjet-printed graphene electronics

Inkjet printing is a promising technique for printing of electronic materials and devices over large areas on flexible substrates. Inkjet printing is a versatile approach involving a limited number of steps with the ability to deposit controlled amounts of material. The development of inks for inkjet printing can be tailored to optimize the properties of the printed films and structures, and are additionally versatile in that virtually any nanomaterial composition can be incorporated as long as the nanostructure size is sufficiently small that the inkjet nozzle does not become clogged.

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Cambridge Graphene Centre
Cambridge Graphene Centre
9 JJ Thomson Avenue Cambridge, CB3 0FA UK

The Mission of the Cambridge Graphene Centre is to investigate the science and technology of graphene, carbon allotropes, layered crystals and hybrid nanomaterials. This engineering innovation centre allows our partners to meet, and effectively establish joint industrial-academic activities to promote innovative and adventurous research with an emphasis on applications.

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