Graphene Memory Arrays Are Stackable, Awesome
Graphene memory arrays in three dimensions may be possible, according to research performed at Rice University. It turns out that a tiny jolt of electricity can 'break' a strip of graphene just ten atoms thick; another jolt restores it to normal. This kind of graphene 'switch' could revolutionize data storage, making it possible to store more data in less space with less energy.
(Are graphene memory sheets possible?)
Graphene memory arrays could increase the quantity of storage in a two-dimensional array by a factor of five. Individual bits would be smaller than 10 nanometers, much smaller than the ponderous 45-nanometer circuitry in use in flash memory today. Also, the new switches could be controlled by two terminals instead of three.
Two switches is a key advance; this makes three-dimensional memory practical. Also, a graphene memory bit is essentially a mechanical device; it would consume virtually no power while keeping data intact.
What distinguishes graphene from other next-generation memories is the on-off power ratio -- the amount of juice a circuit holds when it’s on, as opposed to off. “It’s huge -- a million-to-one,” said James Tour, Rice’s Chao Professor of Chemistry as well as a professor of mechanical engineering and materials science and of computer science. “Phase-change memory, the other thing the industry is considering, runs at 10-to-1. That means the ‘off’ state holds, say, one-tenth the amount of current than the ‘on’ state.”
Electrical current tends to leak from an “off” that’s holding a charge. “That means in a 10-by-10 grid, 10 ‘offs’ would leak enough to look like they were ‘on.’ With our method, it would take a million ‘offs’ in a line to look like ‘on,’’ he said. “So this is big. It allows us to make a much larger array.”
And, in the It Just Keeps Getting Better And Better department, Tour says that graphene 'switches' are significantly faster in operation, have a longer operating lifetime, and work well from minus 75 degrees to more than 200 degrees Celcius.
SF fans may recall the Schrön Loop memory storage device, from Dan Simmons 1991 novel Hyperion; it had somewhat greater capacity (and could be implanted in a person):
"A man or woman could carry AIs or complete planetary dataspheres in a Schrön loop." (More)
From James Tour’s graphene device may make massive storage practical.
Scroll down for more stories in the same category. (Story submitted 11/22/2008)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Revault Wearable Private Cloud Is Too Vaporous
'A man or woman could carry AIs or complete planetary dataspheres...'- Dan Simmons, 1989.
SCRIBE Enables Distributed Genomically Encoded Memory
Genomic DNA for analog, rewritable, and flexible memory.
Samsung 840 Evo 1TB Solid-State Drive
'A man or woman could carry AIs or complete planetary dataspheres in a Schrön loop.'- Dan Simmons, 1989.
One Terabyte Thumbdrive - DataTraveler HyperX Predator 3.0
'The Schrön loop was tiny, no larger than my thumbnail, and very expensive.'- Dan Simmons, 1989.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Zap Space Debris With Telescope Laser On ISS
'... their lasers vaporized the smaller satellites...'
Moran Cerf, When Will We Get Neuro Tech For Ourselves?
If brainwave-sensing consumer products tickle your fancy...
Velkess Energy Storage System (It's A Flexible Flywheel!)
'The kinetic man unjacked Lalji’s kink-springs from the winding treadmills...'
Performance Enhancing Drugs - In Gaming?
'A faint smell of rachag stimulant wafted down the table.'
Automated Treadmill Adjusts To Your Pace
'The auto-treadmill's bumps and gullies matched...'
Mr. Anderton, Beware This Long-Range Iris Scanner
Try keeping your eyes shut, Mr. Anderton.
Mini Statues Of You From 3D Images
'...A three-dimensional simulacrum of himself six inches high took form.'
'Forever' Camera Powered By Its Own Images
'What I have in this camera is not a record of what you did just now but what will go on here in the next half hour...'
Robot Chef Makes Thousands Of Dinners
'I got one of those new electronic cameras... and I could construct this one to do it exactly right down to the thousandth of a second.'
Revault Wearable Private Cloud Is Too Vaporous
'A man or woman could carry AIs or complete planetary dataspheres...'
Spacex Sticks Landing! But Neglects Lateral Forces
Lumo Projector Turns Kids Rooms Into Bradbury's Veldt
'The walls began to purr and recede... and presently an African veldt appeared...'
Ground Control Space Beer
Ninkasi Brewing Co. has its own space program.
Google Wants To Give Orders To Robot Armies
Or maybe they aren't bent on world domination.
Gestures Control Spider Robot Army
'What do you think - four spiders, one per floor?'
Hologram Protest World's First
'Their bodies were in their dwelling cells, but their telucid images filled the hall.'
More SF in the News Stories
More Beyond Technovelgy science news stories