Graphene - Y-Prize Competition

GrapheneThe best single atom material

What is it?

What is Graphene?● Graphene is a single atom

thick material made entirely of carbon atoms arranged in a honeycomb lattice.

● Discovered by exfoliating a graphene flake repeatedly.

● It can form materials of all dimensionalitieso Fullerenes (0D)o Nanotubes (1D)o Graphene (2D)o Graphite (3D)

What does Graphene look like?

What about theory?Tight Binding Model

What are the properties?● Graphene’s strength come

from it’s covalent bonds. Strongest chemical bonds between atoms.

● Graphene’s amazing properties come from it’s linear dispersion.

● In graphene electrons behave with zero effective mass.

● High electron mobility.o High electric

conduction.o High thermal

conduction

How do we get it?

How is Graphene made?Mechanical Exfoliation Epitaxial growth on SiC

How is Graphene made?Reduction of Graphite Oxide Liquid Phase Exfoliation

How is Graphene made?Chemical Vapor Deposition

How about large scale?Roll-to-roll graphene

1. Enables mass production of graphene.a. Roll of copper is loaded into a furnace, with a

roll of graphene covered copper coming out.b. Roll of graphene covered copper is coated

with PET polymer.c. Roll of PET/Graphene/Copper and is sprayed

with copper chloride etchant.d. Final roll or graphene on PET is produced.

What is it good for?