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  • Graphene holds the promise of the future of engineering and technology, it’s like a

  • miracle substance!

  • It was discovered in 2004, and weve had a lot of trouble making ituntil now.

  • Hey graph-heads, Trace here for DNews.

  • Remember wayyy back in 2013 when we learned graphene capacitors might make our phones

  • magical?

  • We said someday theyll charge in five seconds!

  • Then graphene sort ofdisappeared.

  • I mean, it was out there, and we knew it was cool, but we had trouble making a lot of it

  • at one time, or doing things with it.

  • So, time for an update.

  • Let me catch y’all up.

  • Graphene is a one-atom thick lattice of carbon atoms.

  • It’s super-capacitive, electrically conductive, biodegradable, 200 times stronger than steel,

  • can take pretty much any shape, and is ultralight.

  • It’s been theorized to help clean up nuclear waste, easily filter the salt from seawater,

  • could make ridiculous headphones, is biocompatible -- meaning you can hook it right to biological

  • cells (read: cyborgs)... um, what else….

  • Oh right, help make space elevators a reality, create flexible computers, unbreakable phone

  • screens, and create the base for new supercomputersneedless to say, the shiz is tight.

  • The problem iiisss...

  • It’s kind of really super hard to make in large quantities.

  • It’s what supply chain management people would call an issue with scale.

  • Until very recently, graphene could only be made in tiny quantities or using difficult

  • processes.

  • For example, a study from 2015 in Nature Communications detailed the growing -- yes growing -- of

  • the nanoscale graphene lattice on a copper base.

  • But, from that they only got a sheet of 8 by 13 millimeters.

  • SO GREAT.

  • (whisper: not great).

  • Though admittedly, they say this could scale up

  • This stuff is so incredible, that everyone is working to try and figure it out.

  • But, it’s just too expensive to make it at a large scale outside of a laboratory.

  • Though, a 2017 study in Nature Communications detailed how to make graphene in a single

  • step: heating soybean oil to 800 C on a nickel foil causes the carbon to arrange into a single

  • (one atom-thick) sheet of graphene -- slightly hotter temperatures made the sheets of graphene

  • thicker!

  • This method is fast, works out in the open air (most others require a vacuum chamber),

  • and could cut the cost of making this stuff ten-fold!

  • Though theyre still not scaling itthe largest sheet created thus far was about the

  • size of a credit card.

  • But funnily enough, a physics professor just patented an accidentally discoveredhigh-yield

  • graphene creation system!

  • It’s scalable, affordable, and (like the soybean method) doesn’t use thenasty

  • chemicalsused by older methods.

  • To create it, they literally explode acetylene and oxygen using a spark plug.

  • Acetylene provides the carbon for the graphene to create itself in the heat of the explosion,

  • but they don’t come out in nice sheets, rather, in chunks.

  • Grams of chunks!

  • While the yield of other methods is measured in milligrams, this makes way more!

  • Their problem (because nothing is easy) is the graphene isn’t as high qualityso

  • they have to fix that, maybe by getting it out of the explosion chamber sooner?

  • Well see.

  • At least one group of researchers are looking beyond that when all these problems with making

  • graphene are worked out, and are molding the ultra-light material into a fluffy, “cobwebby

  • network.

  • The design, published in Science Advances details how MIT researchers addressed a problem

  • with graphene: when turning it into shapes, you lose some of its incredible properties.

  • By looking at the atomic structure, they found part of the magic of graphene is the way the

  • atoms are interconnected.

  • By mimicking that atomic design on a macro level -- they created this weird shape.

  • That mimicked shape lets graphene keep its amazing properties.

  • We just have to figure out how to use it to construct buildings!

  • It’s lighter than a plastic bag, but stronger than steel.

  • Someday, they could grow graphene in or on molds like this one, and use that product

  • to build a bridge!

  • Assumingof course, we can ever make it.

  • Look, however you feel about graphene.

  • Get out there and become an engineer.

  • Not only do we need more people figuring out how to design bridges based on carbon atoms,

  • but we need more people blowing up stuff to try and invent the world’s strongest material.

  • And, that person could be you.

  • Science is the best.

  • Want more information on graphene and find out how it can charge your cell phone in five

  • seconds?

  • Watch this super old video I edited myself in 2013.

  • Yeah, I know.

  • I KNOW.

  • Those were the days.

  • What do you guys think about super-strong, ultralight graphene?

  • What would you build?

  • Tell us in the comments, make sure you subscribe for more DNews and thank you for watching.

Graphene holds the promise of the future of engineering and technology, it’s like a

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新發現可釋放石墨烯的全部潛力 (New Discovery Could Unlock Graphene's Full Potential)

  • 155 14
    Chih Yao Chen 發佈於 2021 年 01 月 14 日
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