The execution of graphene-based apparatus always demands the precise patterning of sheets at both the micrometer and nanometer scale. It appears that 3 D printing methods are an enticing manufacture course towards three-dimensional constructions that are graphene. On the very first 3D printed nanostructures constructions made completely of graphene we reported in a previous Nanowerk Spotlight.
Additionally there are various techniques to construct 3D graphene monoliths – for example freeze casting or emulsion templating, etc. – but they’re limited to constructing simple shapes, for example cylinders or blocks.
Using a different strategy, researchers have now utilized flakes of chemically altered graphene – specifically graphene oxide GO and its reduced form rGO – jointly with very small quantities of a receptive polymer (a polymer that changes behaviour and conformation when a ‘chemical substitution’ is activated), to formulate water based ink or pastes.
“We use this two dimensional substance as source to generate macroscopic 3D constructions and a technique called direct ink writing (DIW) also referred to as direct compose assembly (D WA), or Robocasting.”
García-Tuñon is first author of a paper in the January 21, 2015 online version of Advanced Materials (“Printing in Three Dimensions with Graphene”) where a team from ICL, the University of Warwick, the University of Bath, along with the Universidad de Santiago de Compostela, explain their this system.
This technique is dependant on the constant deposition of a filament following a pc design. The 3D structures are built layer by layer from bottom to top.