Mar. 9th, 2018 11:12 am
miriam_e: from my drawing MoonGirl (Default)
[personal profile] miriam_e
I think in the future much of our electronics might be carbon-based rather than silicon-based. Graphene -- a single layer of carbon atoms in a flat hexagonal sheet -- has a lot of fascinating properties. It turns out that two layers of graphene where one layer is rotated 1.1 degrees with respect to another becomes a superconductor (conducts electricity without resistance). Unfortunately this double layer of graphene has to be cooled to about –271° Celsius to show this effect. It has another interesting trick too: apply an electric field and it turns into an insulator. That is, it can be a switch. (See )

Graphene is also much stronger than steel, is flexible, and can be made at very low energy. At normal temperatures graphene is about 40% better conductor of electricity than copper, yet far lighter. The raw material (carbon) is one of the most common on Earth, and if we made carbon-based things out of thin air, like plants do, building their structures from carbon dioxide, we might help counter greenhouse gas build-up.

The biggest drawback is that we don't yet know how to routinely construct arbitrarily large flawless sheets of it. But you can bet we will solve it.

A prediction from me: I think cables made from long graphene tubes (also called bucky tubes) wound together will be used to make the space elevator, which will bring extremely cheap space travel to everyone.
Anonymous( )Anonymous This account has disabled anonymous posting.
OpenID( )OpenID You can comment on this post while signed in with an account from many other sites, once you have confirmed your email address. Sign in using OpenID.
Account name:
If you don't have an account you can create one now.
HTML doesn't work in the subject.


Notice: This account is set to log the IP addresses of everyone who comments.
Links will be displayed as unclickable URLs to help prevent spam.


miriam_e: from my drawing MoonGirl (Default)

November 2018

181920212223 24

Style Credit

Expand Cut Tags

No cut tags
Page generated Apr. 18th, 2019 06:54 pm
Powered by Dreamwidth Studios