3 points

How does this compare to carbon fiber?

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24 points

Depends. Are you building a sub?

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1 point

Damn, beat me to it

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6 points

Yeah I had a sinking feeling it was only lab based at this stage

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7 points

That was my first though too.

Also, I understand why they just talk about “strength”, but it would be nice to have some real idea of which properties they really mean. Is it harder? Does it resist impact better? Does it resist lateral torsion better? Steels cover a wide range and almost always involve tradeoffs.

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4 points

Yeah it’s kind of insane what a miracle material steel is. Especially for how long ago it has been discovered and we still haven’t found another material that is better in every way, like how steel replaced iron or brass or copper. The balance of all the material properties for its weight/volume and its manufacturability and price is just unbeatable.

For scifi purposes,I tried to find another material that could beat it if cost wasn’t an issue and I couldn’t. Closest ones I could find that aren’t already obiquitous in popular consciouness like titanium, aluminium, tungsten carbide etc. are Molybdenum and Beryllium. But yeah, they don’t exactly beat steel either.

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2 points

Isn’t beryllium pretty brittle, though? Beryllium poisoning happens due to airborne particles, I thought it almost… crumbled? I guess?

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3 points

And how renewable is this new glass-coated DNA material? Iron scores pretty high on that one too.

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7 points

That only works in the Lab….

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7 points

I was looking for mention of the size of the piece they made, given that the material is a nano structure. No mention of it that I saw.

Probably not even visible to the eye.

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10 points

The first step of every new invention…

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14 points

Is also the last step for 90% of them

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6 points

Welcome to the scientific process

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35 points

This is actually pretty cool:

The colleagues reported in Cell Reports Physical Science that by building a structure out of DNA and then coating it with glass, they have created a very strong material with very low density.

They use self-assembling DNA to build a lattice, which is then doped with microscopic glass. It’s kind of like reinforced concrete but at the molecular scale. Scaling it up will be the hard part but the technique is pretty innovative.

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6 points

Graphene vibes

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4 points

What do you mean? Graphene is amazing at everything but one.
The one is getting out of the lab , but still…

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3 points

I saw a YouTube video a while ago about 3d printing structures with organic filaments. Now self replicating DNA composites… it’s interesting and a bit unsettling to think of a future where buildings may be literally alive.

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19 points

One step closer to Mithril

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8 points

I always find it weird when they say stuff like something is 5 times lighter than something else. Or it’s 10 times cheaper than something else. It seems better to say scientists have invented a new material that weighs 1/5 as much as steel.

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1 point

Yeah. You can’t x by a positive number and end up with a product that’s smaller than x. It’s literally incorrect, even though they obviously mean it’s one fifth rather than “five times”

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