Why? Those are sheets of graphene. If anything it's arguably much closer.
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Replying to @mchapiro @LauraDeming
well, i suppose, but stacks of graphene are very distinct from a sheet that’s rolled up. doesn’t have the morphological property that’s the most relevant for eg tensile strength or eg electrical properties shared with graphene and nanotubes. just my thinking
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Replying to @DanielleFong @LauraDeming
I'd say what matters most is pi-pi bonding on a *planar* surface, which allows you to scale up to a macro-scale structure through the use of fibers -- in practice, your tensile strength is much lower if you try to make a composite highly loaded with graphene, if you can load it.
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Replying to @mchapiro @LauraDeming
yes, the bonds off plane aren’t strong. optimizing this is critical to achieving good tensile strength even in your other example, carbon fiber, There’s a vast differences and the tensile strength and modulus depending on how you make it
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Replying to @DanielleFong @LauraDeming
Michael Chapiro, Esq., GMI, GFY Retweeted Michael Chapiro, Esq., GMI, GFY
I pointed to a pitch fiber, but PAN has higher transverse tensile strength (both far less than along length). You wouldn't gain anything though since the diameters are below critical length at current strengths and won't tear. But back to original prompt:https://mobile.twitter.com/mchapiro/status/1277063044133203969 …
Michael Chapiro, Esq., GMI, GFY added,
Michael Chapiro, Esq., GMI, GFY @mchapiroReplying to @LauraDemingNo. I interpret equivalently useful to mean broadly useful class of materials where a lot of variations are available at a low cost. We will find broadly useful materials and cheap materials going forward, but both simultaneously is improbable, and possibly fully implausible.1 reply 0 retweets 0 likes -
Replying to @mchapiro @LauraDeming
I do think that a new class of semiconductor, or a vastly stronger material like what nanotubes or graphene or even optimized carbon fiber could achieve, or a breakthrough practical superconductor, would have enormous impacts. Perhaps similar in scale to plastic or glass
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Replying to @DanielleFong @LauraDeming
Well the vast improvements in structural efficiency will not come from something like a carbon nanomaterial, but from manipulating carbon fiber composites at the mesoscale (few millimeters). Wrote about it here. http://www.mantiscomposites.com/documents/jec2.pdf …
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I don't think the initial question was well posed if advanced materials with large impacts was the desired response since too open-ended to be meaningful. If it's a poll asking whether materials will continue to represent a large portion of economic growth I'd vote yes.
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Replying to @mchapiro @LauraDeming
"come from something like a carbon nanomaterial, but from manipulating carbon fiber composites at the mesoscale (few millimeters)" i've thought the same thin, but others have reasons to think advances from the nano end have promise. not sure of either
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i think the fiber reinforced composites could ultimately be as important as plastics. potentially nearly as flexible, massive strength increases. the vector space of the set of applications is much larger
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esp as new composites are developed
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