Feeds

Boffins build bendy Flash array

Organic floating-gate transistors employed

Security for virtualized datacentres

Japanese boffins have created a flexible sheet of Flash memory out of organic transistors.

The team, led by Takao Someya of the University of Japan's Applied Physics, and Electrical and Electronic Engineering departments, built the transistors using a dielectric material composed of a 2nm-thick polymer layer and a 4nm-thick sheet of aluminium oxide.

The layers insulate each transistor's 'floating' metal gate from the rest of the structure - a control gate above and the source and drain below. The metal gate can retain a charge, allowing to 'store' a binary memory value.

Someya told the journal Science that each transistor - there are 676 in the group's test array - can last for 1000 write cycles. Silicon Flash has a longevity of more than 100,000 write cycles, of course, but these are early days for Someya's process, and his transistor sheet is both flexible and considerably cheaper to mass-produce than silicon Flash.

While the organic transistors are not likely to replace Flash chips any time soon, they may find a role in devices that need to bend or be fitted to an irregular shape. Disposable memory products are another possibility.

Memory for a foldable e-newspaper, anyone?

To show one possible application and to test the transistors' storage longevity, Someya's team bonded the sheet to a pressure sensor forming a plastic device that's less than 700µm thick and can record pressure patterns. The patterns are retained completely for 20 minutes, but begin to degrade after that until, 24 hours or so later, they are gone.

Someya believes that these figures can be improved significantly, as can the memory cells' write-cycle lifetime. ®

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
How the FLAC do I tell MP3s from lossless audio?
Can you hear the difference? Can anyone?
iPAD-FONDLING fanboi sparks SECURITY ALERT at Sydney airport
Breaches screening rules cos Apple SCREEN ROOLZ, ok?
Crouching tiger, FAST ASLEEP dragon: Smugglers can't shift iPhone 6s
China's grey market reports 'sluggish' sales of Apple mobe
Apple's new iPhone 6 vulnerable to last year's TouchID fingerprint hack
But unsophisticated thieves need not attempt this trick
The British Museum plonks digital bricks on world of Minecraft
Institution confirms it's cool with joining the blocky universe
Turn OFF your phone or WE'LL ALL DI... live? Europe OKs mobes, tabs non-stop on flights
Airlines given green light to allow gate-to-gate jibber-jabber
Be your own Big Brother: Keeping an eye on Mum and Dad
All watched over by machines of loving grace
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.