Feeds

Graphene QUILT: A good trampoline for elephants in stiletto heels

Wonder stuff's real-world weakness not for real - boffins

The next step in data security

Fears that the radical wonder material graphene might not actually be strong enough for elephants to stand supported in mid-air on a thin film of it, on one leg, while wearing stiletto heels, have been disproven.

And the material - set to revolutionise just about everything, as soon as people can figure out ways to start using it - retains its amazing strength even if it contains manufacturing defects, a new study has suggested.

"We're excited to say that graphene is back and stronger than ever," enthuses James Hone, engineering professor, who's been looking into the matter.

As any fule kno, graphene is a flat molecular lattice arrangement of carbon atoms. It has various nifty properties, not least of them tremendous strength - so much that Hone once observed previously:

"It would take an elephant, balanced on a pencil, to break through a sheet of graphene the thickness of Saran Wrap."

However that sheet of carbon clingfilm would need, it had been thought, to be single molecules from side to side. Nobody can produce such vast, defect-free elephant-proof planar crystals of monomolecular graphene at the moment: rather, any large graphene sheet is more like a patchwork quilt of smaller pieces, joined together at the edges by erratic stitches of carbon-carbon bonds which are potentially much less strong than those holding the patches themselves together.

In research to date involving large graphene quilts, this stitching had seemed to be much less robust than had been hoped: so casting much doubt over the enticing prospect of paper-thin trampolines for elephants wearing spike heels - among many other brilliant graphene-based plans.

But now Hone and his colleagues, having looked into the matter, say that the problem lies in the methods used so far to make the graphene quilt. This is done by using chemical vapour deposition to grow graphene crystals on a copper backing in a high-temperature furnace. The copper is then got rid of using chemicals: and according to Hone, the chemicals mostly used thus far needlessly weaken the quilt's stitching.

If this is avoided, according to Hone and his crew, a large graphene quilt is no less than 90 per cent as strong as a single crystal of the stuff: in fact, graphene is indeed back as the wonder-material of the future. The researchers present their work in blockbusting boffinry mag Science, here.

"This is an exciting result for the future of graphene, because it provides experimental evidence that the exceptional strength it possesses at the atomic scale can persist all the way up to samples inches or more in size," says Professor Hone. "This strength will be invaluable as scientists continue to develop new flexible electronics and ultrastrong composite materials." ®

Choosing a cloud hosting partner with confidence

More from The Register

next story
SCREW YOU, Russia! NASA lobs $6.8bn at Boeing AND SpaceX to run space station taxis
Musk charging nearly half as much as Boeing for crew trips
Boffins say they've got Lithium batteries the wrong way around
Surprises at the nano-scale mean our ideas about how they charge could be all wrong
Thought that last dinosaur was BIG? This one's bloody ENORMOUS
Weighed several adult elephants, contend boffins
Edge Research Lab to tackle chilly LOHAN's final test flight
Our US allies to probe potential Vulture 2 servo freeze
Europe prepares to INVADE comet: Rosetta landing site chosen
No word yet on whether backup site is labelled 'K'
India's MOM Mars mission makes final course correction
Mangalyaan probe will feel the burn of orbital insertion on September 24th
Cracked it - Vulture 2 power podule fires servos for 4 HOURS
Pixhawk avionics juice issue sorted, onwards to Spaceport America
City hidden beneath England's Stonehenge had HUMAN ABATTOIR. And a pub
Boozed-up ancients drank beer before tearing corpses apart
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.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Security and trust: The backbone of doing business over the internet
Explores the current state of website security and the contributions Symantec is making to help organizations protect critical data and build trust with customers.