[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math


View post   

File: 13 KB, 220x176, download.jpg [View same] [iqdb] [saucenao] [google]
9230793 No.9230793 [Reply] [Original]

>fuck around with scotch tape
>get nobel prize
>mfw

also quick question, since this new wonder material has been discovered and everything why the fuck don't we have spaceships and capacitors that recharge in 10 seconds yet?

>> No.9230808

>>9230793
Can't mass produce that shit (or even produce enough for solid bench-scale work) without it being riddled with defects.

>> No.9230812

>>9230793
tape isn't a face you fucking newfag

>> No.9231039

>>9230793
>capacitors that recharge in 10 seconds
We have had those for decades, quit spreading brainletism in /sci/. This place sucks hard enough already.

>> No.9231073

Because physical properties on a nanoscale do not necessarily scale up on a macro scale.

Same with diamonds or spider webs, yes they are remarkable on their scales but you would be an idiot to build skyscrapers from this materials, even if you could.

The nobel price was awarded not because graphene is so amazing, but because it was previously thought of as impossible to make.

This is how discoveries work. Is it worth the nobel price though? I can't tell...

>> No.9231078

>>9230793

My OrgChemIII lab teacher says it's the biggest scam of the century, or at least it isn't feasible to use it in electronics

>> No.9231105

>>9231078

It is not a scam, people make it a scam by assigning unimaginable expectations and blowing the facts out of proportion.

The theory (nierest neighbor tight binding model) behind graphene's conduction process (linear dispersion relationship making electrons behave like light waves) is pretty interesting by itself. Unfortunatly, as others mentioned it before, theory and practice does not always match, and in practice, it is very difficult to observe the properties because graphene sheets need to be

> places on top of some material or substrate, most likely Si or copper from CVD
> are encapsuled in some kind of environment, air / dielectric
> are contacted with gold/copper matallisation layers with finite contact resistance
> have wrinkels, OH-groups and other impurities

But if you give it enough time, maybe something interesting will emerge?

Think of the first transistors, hardly useful back in the 50's yet we have ICs today.

>> No.9231111
File: 796 KB, 1320x1650, 1505429631832.jpg [View same] [iqdb] [saucenao] [google]
9231111

>>9231073
>I can't tell...
t . brainlet

>> No.9231323

>>9231078
It is feasible. Especially now that there's self-folding graphene. Big news this past week.

>> No.9231411

>>9231105

>Think of the first transistors, hardly useful back in the 50's yet we have ICs today.

This is a bad comparison to make. The solid state transistor immediately found uses within AT&T who immediately began replacing their vacuum-tube based systems with it. By modern standards these transistors and ICs they were put into were extremely rough and rudimentary, but for the time it created a massive cost/energy savings against 'tubes. By the 1970s the savings were so great the US could afford to implement a national 9-1-1 emergency calling system AND automatic switchboards. By this point factories were starting to convert their electromechanical relays into early PLCs, whom were based on the solid state transistor.

>> No.9231418
File: 18 KB, 338x236, 593340-20mfw000445.jpg [View same] [iqdb] [saucenao] [google]
9231418

>>9231078
>biggest scam of the century

>or at least it isn't feasible to use it in electronics

>> No.9231419

>>9231078
My material science professor says it's a meme material and we shouldn't think much about it

>> No.9231429

PhD chemist here.

It's difficult as fuck to synthesize on scales needed for industry. Then you have to coat it, effectively and that shit is not easy to process. Then build the device. Process development takes a long ass times and a lot of manpower using machines and tools we haven't fully developed yet which is an entirely different issue.

>> No.9231442

>>9230793
making it in the lab is different that manufacturing it on large scales

>> No.9232420

>>9231111
Who is this phenotyped lesbian and how tight is her poussee

>> No.9232709
File: 82 KB, 1044x510, 59db5f13b3b7e.jpg [View same] [iqdb] [saucenao] [google]
9232709

>>9231323
>self-folding graphene

This, this right here. That's what has been happening in the past 2 weeks. Someone figured out how to do this. This means graphene transistors because being able to fold graphene is an important step in giving graphene a bandgap. Meaning fucking graphene transistors!

https://phys.org/news/2017-10-graphene-self-fold-d.html

Bandgap for graphene is the major thing that has been holding back graphene transistors. Even creating graphene isn't that difficult from this standpoint because you don't need very much at all to make a transistor from it. It is that lack of bandgap that has had everyone completely stumped, not manufacturing graphene.

>> No.9233297
File: 33 KB, 128x128, movmetatron.gif [View same] [iqdb] [saucenao] [google]
9233297

>>9232709
Wonderful how it resembles a flower folding itself.

This is great! We will have much more electrical efficiency and far less heat as a consequence.