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 -
Twist Bioscience High Density Digital Data On DNA
'They tied the memory to the bloodline and that was their record!' - Barbara Humbly, 1982.
Store One Bit On One Atom
'...each individual molecule has a meaning.' - Robert Heinlein, 1951.
DataTraveler Ultimate Generation 2 Terabyte Flashdrive
'A man or woman could carry AIs or complete planetary data spheres...' - Dan Simmons, 1989.
Sandisk 1 Terabyte SD Memory Card Surfaces
'They should be Welton Fine-Grains, or they would be too bulky to ship...' - Robert Heinlein, 1973.
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.
Cattle Avoidance Feature In Indian Autonomous Cars
'The driver went about the business of gently slipping the teflon-coated metal scoop beneath the first animal...'
Project KOVR Fashion Protection From Infosphere
'... the entire shroudlike membrane took on whatever physical characteristics were projected at any nanosecond.'
Twist Bioscience High Density Digital Data On DNA
'They tied the memory to the bloodline and that was their record!'
'We're Not Creating A Terminator' Say Russians About Gun-Wielding Robot Fedor
Nobody is thinking about the Terminator. Westworld, maybe.
Vantablack Now IMMEASURABLY Black
'a black coating now that’s ninety-nine percent absorptive...'
Mercedes-Benz Autonomous Taxi Fleet In 3 Years
'... the taxi utilized sophisticated electronic sensors to perceive its surroundings.'
Is 'The Pulsar Positioning System' Evidence For SETI?
'For a hyperspace jump, you need at least four beacons for an accurate fix.'
Someday, You Might Like VR Enough To Move In
'That barrier was going to melt away someday soon. The transhumanists had promised...'
Humans Use Mental Power For Turtle Slavery
Now we need to start looking for animals with fingers...
Solar-Powered Moisture Vaporator
'The atmosphere yielded its moisture with reluctance.'
DxtER! Tricorder Prize Won By Final Frontier Medical Devices
We've been waiting a long time for this, Star Trek fans.
President Trump's Wall As Otra Nation Hyperloop
'...an hollow tube must be constructed the whole distance... as to admit a four wheeled carriage...'
Pickup Lines From Artificial Intelligences
'They hate us, you know... The humans. They'll stop at nothing.'
Pooper Scooper Drone Robot Watchdog 1
'Robots pick up the garbage and junk...'
Cassie Robot Brings AT-ST Walker To Life
There's even a log test!
Hundreds Of Robot Lawnmowers Invade Texas Town
'The mower reached the edge of the lawn, clucked to itself...'
More SF in the News Stories
More Beyond Technovelgy science news stories