Name: Graphene ‘Wonder Material’ Can Now Be Made Using TRASH
Uploaded: 2020-03-25T02:38:11.000Z
Duration: 4 min 50 s
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Adverbs of degree

The single-atom thick layer of carbon has a number of properties that make it almost

Because of all the neat tricks it can do, it’s popularly dubbed a “wonder material,”

but over a decade and a half after it was first isolated, the only thing I’m wondering

Turns out the stuff is really hard to make in useful quantities, but a recent breakthrough

from researchers at Rice University promises to make large amounts of graphene in a flash

For those of you watching your first episode of Seeker ever, (congrats, welcome, hi) graphene

Anyway, it’s not much to look at—it kind of resembles chicken wire.

But this honeycomb lattice of carbon can do some amazing things.

It is one of the thinnest, strongest, and most conductive materials we have ever discovered.

Its strength can be used to make other materials stronger.

Its amazing conductivity could help us make energy-dense batteries or efficient heat sinks.

Its flexibility could make wearable electronics and bendable displays.

You get the idea—do I really need to keep going?

Which is why it is so frustrating that it’s so hard to make in large amounts.

Ironic, considering it was first isolated by applying a piece of sticky tape like you

might have in your home to a block of graphite and peeling it off, then resticking and peeling

the tape apart until you’re left with thin flakes.

But there’s a reason we don’t have armies of people just peeling tape apart.

The graphene that this technique produces is still a few layers thick, and we're after

As of right now, the prevailing methods to achieve that usually involve assembling it

on sheets of copper, then using plastics and chemicals to get it off.

But the process is slow, expensive and not environmentally friendly.

A piece of 60mm x 40 mm monolayer graphene on copper will cost you about $172.

What if we could just take any old carbon source and zap it to make graphene?

As far as I can tell, that’s basically the line of thinking the researchers from Rice

The process they developed involves charging up high-voltage capacitors with electricity,

then unleashing it all at once into just about any carbon-containing material.

Anything from coal, which is basically all carbon to start with, to plastics, to food waste.

The current passes through the target material, heating it to over 3,000 Kelvin and breaking

every carbon-to-carbon bond in the process.

The non-carbon elements sublime out, while the carbon atoms rearrange themselves as graphene.

Excess energy is dispersed as light, so researchers dubbed the product “flash graphene.”

The change can take as little as ten milliseconds.

Not only does this produce a gram of graphene quickly and cheaply; it also makes a particular

kind of graphene called turbostratic graphene.

Unlike A-B stacked graphene, which has orderly layers that are hard to pry apart, the layers

of turbostratic graphene have no ordered alignment.

This means they can be easily separated using solvents or inside composite materials.

Now, this process doesn’t make large sheets of graphene, just small flakes.

So it may not be the breakthrough that leads to flexible screens you can put on a T-shirt.

But it still has some very useful—albeit less flashy—applications.

The researchers envision flash graphene being added to concrete, and estimate that just

a fraction of a percent of graphene added in could boost cement’s strength by 35%.

That translates to less building material needed, saving costs and lessening the environmental

Flash graphene could be an ecological double win, because it can be made with recycled

plastic or food waste, or it could be an alternative use for cheap coal that doesn’t involve

The Department of Energy thinks turning coal into graphene looks promising, and are funding

the research with the goal of producing a kilogram of flash graphene a day within two

I know we’re all clamoring for graphene to take the world by storm, but the reality

is that it’ll take incremental steps like this to bring this wonder material into our

It’s already showing up in places that are hard to spot, like inside headphones and the

Now thanks to this new work, it may soon show up in our buildings, too.

And the only way you might be able to tell is if you measured the thickness of the walls,

or noticed there was suddenly a lot less plastic and banana peels lying around.

One of the lead researchers from Rice, James Tour, started experimenting with making graphene

out of odd sources because of a bet in 2011 when a colleague challenged him to make it

out of, among other things, cockroaches and dog poop.

Thanks for watching, if you like this video you can check out more like it, like this

one on angled graphene, and subscribe for even more videos.