The Two-Dimensional Diamond That’s Set to Turn Your World Upside Down - +Money Morning Australia
Here are a few Monday riddles for you:
What space-age material is two hundred times stronger
than structural steel?
What conducts electricity so insanely quickly that
researchers at IBM see ‘no intrinsic limits into how fast it can go’?
And which new substance is the subject of three
thousand new research projects, and has just been given a one billion Euro research
investment from the European Commission?
Amazingly, the answer is the same for all three
questions…
I’m talking about graphene.
This is the brand new material that the world of science is salivating over.
Graphene is completely revolutionising the world of material
science, even more than the arrival of plastics did last century. The
unparalleled strength and conductivity of graphene make the possibilities so
much more tantalising than plastics ever could have.
If this is the first you’ve heard of it, let me explain…
Graphene is produced from graphite, and is a two dimensional sheet of carbon
atoms arranged hexagonally. At an atomic level it looks like chicken wire:
Graphene at an Atomic
Level…or Chicken Wire?
Source: Nanotec
This simple arrangement of atoms is remarkably powerful,
because it is essentially a diamond in two dimensions. Not only that, but
this one-atom-thick ‘sheet’ of graphene is completely invisible, yet it so
strong is will support a newborn baby’s weight.
That’s truly remarkable. But now imagine you made a sheet of
graphene the thickness of gladwrap. It would be so ridiculously strong, that in
the words of Professor James Hone at Columbia University,‘It would take an
elephant, balanced on a pencil, to break through it.’
I’d pay good money to see an elephant balancing on a pencil,
let alone on a sheet of graphene!
Clearly graphene is set to turn the world of engineering on
its head. Lighter, stronger parts would obviously be useful in aircraft, for
example. Really at this stage, it’s just the imagination holding back
graphene’s potential applications.
But it gets stranger.
This material also heals itself.
That popular bedtime-read, Mesoscale and Nanoscale
Physics reported that scientists at Manchester University have proven that holes
in graphene sheets completely fill up, without trace, when carbon atoms are
sprayed at it. The loose carbon atoms are just absorbed, and line up perfectly
in new hexagons. Now THAT is just plain bizarre.
A small rip in a soldier’s bulletproof graphene-jacket
during battle?
Easy! Just spray it with Graph-plugTM to quickly close
it up! (OK, I made that up.)
And maybe I’m getting ahead of myself here, but the point is
this: we just don’t know how graphene will change our world, but we can be
sure that it will.
Graphene is All Set
to Shake Up the World
Its physical properties set it apart, but its electrical
properties really take the cake.
Electrons move so freely across the matrix of hexagons, that
it could be used to make microprocessors that are many time faster than
conventional silicon based ones.
This has already been done by IBM. Their first attempt
resulted in a transistor running at 150 GHz. The fastest silicon peer runs at
40GHz. Not bad for a first attempt! And they see no ceiling in how much faster
they can go with future attempts. It seems like computers are going to be
getting much, much faster.
A combination of the tough, conductive properties of
graphene make it perfect for touch-screens on mobile phones.
Samsung sees it going well beyond just replacing this
conventional touch-screen technology though, to become something much bigger.
They have already developed a 25-inch graphene touch-screen. Even more
remarkable, it can be folded up.
Imagine a high powered computer you can fold up and stick in
your wallet. It sounds crazy, but it may not be that far away.
We already knew Graphite is excellent in lithium ion
batteries, but now graphene is proving to be even better.
Taking it one step further researchers now expect graphene
can be used to make ultra-capacitors which hold as much charge as a lithium ion
battery, but can be charged in minutes. That would really shake up the electric
car market, which is being held back by very long charge times for vehicles.
The list goes on, and keeps growing. Graphite seems set to
shake up the world of solar energy as well. The medical sector should benefit
too as graphene can be used to enhance medical tests.
You can rest assured that in the next few years, graphene
will become a household word. This is one of the stories I’ll continue to
follow. And you can follow me and my thoughts on it (along with a bunch of
other things) on my free Google
plus page.
Readers of Diggers and Drillers would know I tipped a graphite
stock last May. It’s now up 230% to become the world’s largest graphite
company. It’s developed a resource larger than all the others combined, and is
set to get much bigger yet.
The reason I went for graphite last year was not graphene –
rather it was more about growing demand for graphite from the lithium ion
battery industry.
At the time I didn’t see that graphene would generate any
commercial demand for graphite. Even though graphene was clearly very exciting,
it was a sideshow to the graphite market.
But over the last year that has started to change
rapidly. US manufacturers can now produce meaningful quantities of high quality
graphene.
The Nobel Prize in physics recently went to graphene
pioneers including Professor Andre Geim. And he now reckons graphene products
will be commercially available within a few years.
At the current speed that the research – and resulting
progress – is moving, it won’t be long before graphene becomes a serious source
of demand for what is already a ridiculously tight graphite market.
Make no mistake this is the start of something big. Quality
graphite deposits already looked like agood investment – but they just got
a whole load better.
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