What is nanotechnology, and why should you care?
Before we get too technical, try this:
Pick up something that's close to you - anything.
It might be a glass. Or a smartphone. Or even a tee shirt - it doesn't really matter what.
Now, think about what this thing does well.
It could be holding water. Or chasing Pokemon.
Or if you're thinking about that tee-shirt,
making you feel awesome!
Then think about what it doesn't do so well.
Perhaps smashing when you drop it.
Or running out of power, just when you need it.
Or, thinking about that tee shirt still, smelling
of BO after you've worn it for a couple of days.
It might not be obvious, but all of these
things - the good stuff and the bad - depend
on the individual atoms that make up the things
around us. And importantly, how they're put together.
It's a bit like a car working because of how all the individual bits are arranged.
It's not just a case of having four wheels,
an engine and a steering wheel. They all have
to be in the right place if you want a car
that gets you to where you're going,
without falling apart.
Of course, atoms are a bit smaller than the
wheels on a car. But the same idea holds.
How the different atoms in something are arranged
can affect things like, how strong or how
weak it is. Or if it conducts electricity.
Or if you can see through it. Or even what
it feels like.
In fact, pretty much anything that the stuff
around you does, it does because of how all
the different atoms it's made of are put together.
And this includes the things that you don't
want stuff to do, like breaking, or smelling,
or running out of power.
If we were really smart of course, we'd make
the stuff around us work better, simply by
doing a better job of arranging the different atoms it's made of.
And if we were smarter still, we could make
totally new stuff by putting atoms together
in ways that we've never done before.
We could even start to create stuff that behaves
in quite unusual ways, because when you start
playing around with atoms, you can tap into
some really weird quantum physics.
The trouble is, atoms are really small - more
than a million times smaller than the tip
of your pinkie finger.
And that means they're not that easy to work
with.
But over the past few years, scientists and
engineers have become increasingly good at
designing and engineering materials down at
the level of atoms, or small groups of atoms.
And because this new technology involves doing
stuff at such a minute scale, it's called
nanotechnology.
Using their news skills, nanotechnologists
are beginning to cool stuff like creating
materials that are really good at turning
sunlight into energy.
Or using nanoscopically small particles to
deliver anti-cancer drugs.
Or even turning polluted water into drinkable water.
They're even finding new ways to make glass
that doesn't break when you drop it.
Batteries that last longer.
And even tee shirts that smell fresh
after you've worn them for a few days.
This is really powerful tech.
It's helping us to do stuff we couldn't even
dream of just a few years ago.
But because nanotechnology is so powerful,
we need to be really careful how we use it
- just in case we end up causing more problems
than we solve.
The last thing we want is to make better solar
cells that also destroy the environment.
Or design more efficient water filters that
just happen to cause more pollution.
Because of this, scientists and others are
working hard to make sure we develop and use
nanotechnology responsibly.
But this isn't just down to nanotechnologists.
It's something everyone can be part of.
Because, at the end of the day, it's up to
us to decide just how much we want nanotechnology
enabled products.
And what we're willing to put up with to get them
