from the a-little-dope-here,-a-little-dope-there dept.
In a new study, scientists have opened a band gap in graphene by carefully doping both sides of bilayer graphene in a way that avoids creating disorder in the graphene structure. Delicately opening up a band gap in graphene in this way enabled the researchers to fabricate a graphene-based memory transistor with the highest initial program/erase current ratio reported to date for a graphene transistor (34.5 compared to 4), along with the highest on/off ratio for a device of its kind (76.1 compared to 26), while maintaining graphene's naturally high electron mobility (3100 cm2/V·s).
The researchers, led by Professor Young Hee Lee at Sungkyunkwan University and the Institute for Basic Science in Suwon, South Korea, have published their paper on the new method for opening up a band gap in graphene in a recent issue of ACS Nano.
"We successfully demonstrated a graphene transistor with a high on/off ratio and mobility by chemical methods and showed its feasibility as a memory application with a significantly improved program/erase current ratio," first author Si Young Lee, at the Institute for Basic Science and Harvard University
(Score: 0) by Anonymous Coward on Wednesday September 23 2015, @09:02PM
Graphene and CNT are exciting to materials and electrical engineers but they have also been shown to be pretty toxic if inhaled or ingested in anyway. Like DNA damaging toxic. They are so freaking small I'm not sure how you filter or control were they go either.
(Score: 2) by MichaelDavidCrawford on Wednesday September 23 2015, @09:08PM
Ship it to Belarus, pay a bunch of little kids to desolder the chips with blowtorches.
Yes I Have No Bananas. [gofundme.com]
(Score: 2) by takyon on Wednesday September 23 2015, @09:24PM
You wouldn't smoke your CPU.... would you?
It could pose problems for designing nanobots, which will be expected to face casualties inside your body, swim around until death, or be excreted.
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 2) by Zz9zZ on Wednesday September 23 2015, @10:37PM
The methods are there, whether they will be used is another matter. Chlorine is even smaller yet we work with it all the time.
Hazard suites, sealed rooms with proper ventilation and filters/traps to keep it from exiting the premises, etc.
~Tilting at windmills~
(Score: 2, Interesting) by Francis on Thursday September 24 2015, @05:09AM
Chlorine is something that we know how to handle and it doesn't generally just hang out by itself, usually it bonds with something. If you ingest a bit it's usually not a particular problem. And we have decades of experience working with it in the household. People generally understand when they're working with chlorine products that there are risks.
Nano-materials are not something that we have that kind of relationship with yet. The risks are largely unknown and when they are known are unlikely to show up on a warning label. It's highly likely that at least some of these particles will wind up the same way that asbestos did. Seemingly OK at the time, but years later causing untold amounts of suffering and misery.
The point here isn't to abandon the research, the point here is to realize what short-sighted jackasses people are being and insist that the stuff is put through reasonable product safety testing before being spread all over the place.
(Score: 2, Interesting) by Anonymous Coward on Wednesday September 23 2015, @09:22PM
http://www.livescience.com/52207-faster-3d-computer-chip.html [livescience.com]
(Score: 2) by Yog-Yogguth on Sunday September 27 2015, @12:09AM
Here's a link to the 2013 paper (PDF) [bilkent.edu.tr] that is unencumbered.
No luck on the 2015 IEEE paper :|
Bite harder Ouroboros, bite! tails.boum.org/ linux USB CD secure desktop IRC *crypt tor (not endorsements (XKeyScore))
(Score: 2) by Yog-Yogguth on Sunday September 27 2015, @12:16AM
The correct link becomes mangled and stripped of the spaces and thus a 404, here is the link as text to copypaste into the address bar:
http://bg.bilkent.edu.tr/jc/papers/2013%20-%20Carbon%20nanotube%20computer.pdf [bilkent.edu.tr]
And if that didn't work one can navigate to the paper from this address [bilkent.edu.tr] (no spaces there).
Bite harder Ouroboros, bite! tails.boum.org/ linux USB CD secure desktop IRC *crypt tor (not endorsements (XKeyScore))
(Score: 2) by Yog-Yogguth on Sunday September 27 2015, @12:06AM
It took some digging but here it is (PDF) [researchgate.net] (without the additional surplus 3rd party cover page).
Bite harder Ouroboros, bite! tails.boum.org/ linux USB CD secure desktop IRC *crypt tor (not endorsements (XKeyScore))