Posted on 07/08/2022 2:33:44 PM PDT by upchuck
Graphene is a single-atom-thin material that can be exfoliated from the same graphite that is found in pencil lead. The ultrathin material is made entirely from carbon atoms that are arranged in a simple hexagonal pattern, similar to that of chicken wire. Since its isolation in 2004, graphene has been found to embody numerous remarkable properties in its single-layer form.
In 2018, MIT researchers found that if two graphene layers are stacked at a very specific "magic" angle, the twisted bilayer structure could exhibit robust superconductivity, a widely sought material state in which an electrical current can flow through with zero energy loss. Recently, the same group found a similar superconductive state exists in twisted trilayer graphene—a structure made from three graphene layers stacked at a precise, new magic angle.
Now the team reports that—you guessed it—four and five graphene layers can be twisted and stacked at new magic angles to elicit robust superconductivity at low temperatures. This latest discovery, published this week in Nature Materials, establishes the various twisted and stacked configurations of graphene as the first known "family" of multilayer magic-angle superconductors. The team also identified similarities and differences between graphene family members.
(Excerpt) Read more at phys.org ...
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Interesting: 10 Uses for Graphene.
If you take layers of super-conductive graphene alternated with dielectrics, do you get a super-capacitor?
Just use covid vaccine.
Will any of that help to keep my EV from exploding?
whose arm did they find them in?
Superconducting at -273 degrees Celsius.
“...angles to elicit robust superconductivity at low temperatures...”
They already get NEAR perfect superconductivity at “low” temperatures. How low is low? If they can stay above liquid HE temps, this would be big; otherwise, nothing much to see here.
Seems very promising in the long run.
It will be quite interesting to me what else they discover
about graphene over the years.
Looking forward to it.
Thanks for the post.
If graphene research falls off the radar and is never mentioned again, it will be because they succeeded too well with the superconductivity angle.
Blacker than a black bear wearing a vantablack cloak in the black forest at midnight.
graphene has been displaying amazing properties for two decades. my favorite is the ability to desalinate seawater virtually without any energy. fresh water passes through the mesh leaving behind the salt.
great.
the problem for two decades has been the difficulty in producing graphene profitably/cheaply at scale. except for limited applications.
Super cool neato but WHERE'S MY DANGED SPACE ELEVATOR? I don't have all lifetime.
I know. Mine's been on backorder for 8 months.
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