Intrigued by Graphene - Printable Version
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Re: Intrigued by Graphene - Trevmiesterj - 02-11-2018
I came upon this article inserted as a link within another regarding the coming scarcity of fresh drinking water to many highly populated cities of the world.Â
A potentially life saving application of graphene oxide is being developed to operate as a sieve to filter out salt from seawater for desalination purposes. Graphene oxide has potentially overcome the limitations of consistent pore size in mono layer graphene required for molecule filtration when manufactured on an industrial scale. Graphene oxide also has the advantage of scalability and cost, which is another barrier to the use of graphene in an industrialized application.
Thanks to the existence of this legendary thread, I was curious enough about the process to delve into the research letter to better understand this fascinating science. The legendary Cardboard graphene thread strikes again!
Graphene-based sieve turns seawater into drinking water
Tunable sieving of ions using graphene oxidemembranes
The 11 cities most likely to run out of drinking water
Re: Intrigued by Graphene - Trevmiesterj - 03-07-2018
There may be less intensive ways to create this material, but FWIW, here is a "How it's Made" version of creating a Graphene chip.
https://www.youtube.com/watch?v=LmSfKAPMm2A
Re: Intrigued by Graphene - BostonCard - 03-07-2018
We are coming up on the fourth anniversary of this thread.
Where is the coffee thread?
BC
Re: Intrigued by Graphene - cctop - 03-07-2018
And here I was thinking this thread got bumped because of the Nature article this week on graphene possibly being a high-temperature superconductor (except "high-temperature" in this case means about 2 degrees above absolute zero):
https://www.nature.com/articles/d41586-018-02773-w
Re: Intrigued by Graphene - CTcard - 03-08-2018
(03-07-2018, 02:38 PM)cctop link Wrote:And here I was thinking this thread got bumped because of the Nature article this week on graphene possibly being a high-temperature superconductor (except "high-temperature" in this case means about 2 degrees above absolute zero):
https://www.nature.com/articles/d41586-018-02773-w
Wow.
That's a very hot take on a subject very close to my professional life. The underlying papers aren't even officially published yet - just posted in "pre-publication".
Looks at least promising, though promising more in a "this is going to help us understand things" sort of way rather than "this thing will be great technology" way.
The characterization of the insulating version (which really matters for understanding what is going on fundamentally) is far from solid so far, but there will be lots of follow up work.
Re: Intrigued by Graphene - ca245 - 03-20-2018
Here's a use for graphene I wouldn't have thought of.
https://www.nytimes.com/2018/03/16/science/hair-dye-graphene.html?rref=collection%2Fsectioncollection%2Fscience&action=click&contentCollection=science®ion=rank&module=package&version=highlights&contentPlacement=7&pgtype=sectionfront
Re: Intrigued by Graphene - Stymie - 03-21-2018
At the recent PGA event (Arnold Palmer Invitational), Callaway spent a lot of TV adtime promoting graphene as the Thing that makes their balls as the Biggest Thing du jour, I'll try them out soon.....
Re: Intrigued by Graphene - BostonCard - 04-20-2018
More graphene...
https://www.extremetech.com/computing/267695-new-graphene-discovery-could-finally-punch-the-gas-pedal-drive-faster-cpus?utm_source=email&utm_campaign=extremetech&utm_medium=image
BC
RE: Intrigued by Graphene - BostonCard - 05-06-2018
Now there’s word that graphene can be used to make concrete stronger...
https://www.nbcnews.com/mach/science/new-green-concrete-could-be-game-changer-construction-industry-ncna870371
BC
RE: Intrigued by Graphene - 82lsju - 07-07-2018
How to fool infrared vision gear into thinking you are not there
Use graphene
https://www.economist.com/science-and-technology/2018/07/05/how-to-fool-infrared-vision-gear-into-thinking-you-are-not-there
RE: Intrigued by Graphene - BostonCard - 07-09-2018
(07-07-2018, 04:13 PM)82lsju Wrote: How to fool infrared vision gear into thinking you are not there
Use graphene
https://www.economist.com/science-and-technology/2018/07/05/how-to-fool-infrared-vision-gear-into-thinking-you-are-not-there
Damn, you beat me to it. It has gotten to the point where any article I see about graphene prompts me to search for this thread.
BC
RE: Intrigued by Graphene - BostonCard - 11-09-2018
Because no news about graphene can go by without me reviving this thread...
https://phys.org/news/2018-11-graphene-superconductivity.html
I guess a graphene bilayer has some properties that, under the right circumstances, could make it a superconductor.
BC
RE: Intrigued by Graphene - martyup - 11-10-2018
(11-09-2018, 07:44 PM)BostonCard Wrote: Because no news about graphene can go by without me reviving this thread...
https://phys.org/news/2018-11-graphene-superconductivity.html
I guess a graphene bilayer has some properties that, under the right circumstances, could make it a superconductor.
BC
I knew it.
RE: Intrigued by Graphene - CTcard - 11-11-2018
(11-09-2018, 07:44 PM)BostonCard Wrote: Because no news about graphene can go by without me reviving this thread...
https://phys.org/news/2018-11-graphene-superconductivity.html
I guess a graphene bilayer has some properties that, under the right circumstances, could make it a superconductor.
BC
That particular report falls into the most-likely-bogus category.
- Several other groups have done the identical experiment on almost identical samples and not seen this.
- There is no particular connection between what they report and superconductivity. The idea relies upon a weak argument by analogy, i.e. there is an important high temperature superconductor with such a flat band.
- Really important results in this area that colleagues believe are not published in Science Advances.
Superconductivity in twisted graphene discussed higher up in this thread does seem to be real and interesting.
[Weird forum bug. Occasionally when I try to post, the message I write doesn't appear but instead the quotation of the OP shows up twice. I think this only happens when I used Microsoft Edge. Anyone else notice this or know why? ]
RE: Intrigued by Graphene - CompSci87 - 11-11-2018
More graphene:
https://www.sciencenews.org/article/how-graphene-could-make-future-electronics-superfast
RE: Intrigued by Graphene - BostonCard - 11-11-2018
(11-11-2018, 11:55 AM)CTcard Wrote: That particular report falls into the most-likely-bogus category.
Quick question for you. Is phys.org a credible physics news site? It pops up frequently in my various feeds (twitter, google news), but it is hard for me to evaluate its credibility. That they would push a "most-likely-bogus" story suggests that they might be easily caught up in hype, but of course this sort of thing can happen to the best of sites.
BC
RE: Intrigued by Graphene - 82lsju - 12-31-2018
Researchers from MIT and elsewhere have recorded, for the first time, the "temporal coherence" of a graphene qubit—meaning how long it can maintain a special state that allows it to represent two logical states simultaneously. The demonstration, which used a new kind of graphene-based qubit, represents a critical step forward for practical quantum computing, the researchers say.
Read more at: https://phys.org/news/2018-12-physicists-lifetime-graphene-qubits.html#jCp
RE: Intrigued by Graphene - Mick - 01-01-2019
https://www.graphene-info.com/news
A link to all-graphene, all-the-time news.
RE: Intrigued by Graphene - Redrum - 01-01-2019
Encouraged by an early link to video of a tiny live frog apparently being tumbled weightless in some sort of levitation field, have followed this thread for four years plus, waiting for graphene research to prove conclusively that USC sucks. So far we only have tradition and the evidence of our own eyes to validate the proposition, which should be OK because graphene is just one atom thick and transparent so everyone could see that USC sucks. But time passes and the lack of research progress into this pressing matter is...concerning.
RE: Intrigued by Graphene - martyup - 01-01-2019
Quote:He had a brain the size of a qubit and skin as thin as a sheet of graphene.