Posted on | June 9, 2011 | 1 Comment
Graphene can be manufactured in the lab, but the scale-up is still a challenge for scientists and functionalized graphene remains suspended in solution, which poses further limitations on its use. While some are still making tiny graphene film on filter papers, Mānoa Associate Researcher Atul Tiwari and Anupama Chaturvedi, a former mechanical engineering student, have invented a technology that can transform graphite powder into super long, ultra-pure graphene film.
A synthetic procedure that does not require a binder has been developed Tiwari and Chaturvedi. Tiwari can now manufacture super long, graphene sheet/film in a continuous roll. The film can be dissolved completely in solvent using a common mixing technique. The stable graphene film can also be rolled into thin sheets that can be transported without the need of special shipping and packaging.
“This will help manufacturers incorporate graphene into consumer products, which will make their products light weight and super strong,” says Chaturvedi.
Added Tiwari, “This material has shown interesting properties and the invention may revolutionize the manner in which graphene is being used in research and industry.”
The super long graphene sheet/film can be used as low dielectric constant material for microelectronics, membranes for fuel cells, fillers for fiber reinforced polymer composites, coatings for the sizing of the fibers, coatings for corrosion protection, flexible grids for the organic solar cells, flexible liquid crystal displays, ultra-capacitors, batteries and other as yet to be determined uses.
Read the news release.