Feeds

Oz nanoboffins punt paper-thin flak jacket plan

Some kind of Robocop involvement. And geckoes, of course

Beginner's guide to SSL certificates

Astounding news from Australia today, as it appears that yet another unbelievable movie themed breakthrough has been made in gecko-related nanotech.

This time, the flick ligged by ink-thirsty boffins is Robocop, rather than Spiderman or The Incredibles.

Sadly, we aren't talking here about brains plucked from slain hero cops being implanted into invulnerable robot bodies packing pop-up automatic weapons.

"Bulletproof jackets do not turn security guards, police officers and armed forces into Robocops," says a release from the Institute of Physics (IOP), which is publishing the Oz research in question.

No shit. But wait:

"New research in carbon nanotechnology however... can bounce bullets without a trace of damage... carbon nanotubes... not only stop bullets... but actually rebound their force... engineers in Sydney have undertaken experiments to find... the most effective bullet-bouncing gear."

Crikey. How does it work?

"Nanotubes bind together... because of the Van der Waals force... used... by geckoes when they stick to a ceiling."

OK, so there's no actual robocop action going on here. But we might have some kind of amazing gecko-tech nanotube vest off which bullets will bounce harmlessly.

According to the IOP publicists, regular old crappy flak jackets made of "Kevlar, Twaron or Dyneema" are rubbish.

"Targets can still be left suffering blunt force trauma - perhaps severe bruising or, worse, damage to critical organs," they say.

But bleeding-edge Antipodean research could change all that.

"The dynamic properties of the materials we have found means that a bullet can be repelled with minimum or no damage to the wearer of a bullet proof vest," according to Sydney-based engineering boffins Prof Liangchi Zhang and Dr Kausala Mylvaganam.

For the full details, go here (pdf).

"The best material for body armour should have a high level of elastic storage energy that will cause the bullet to bounce off," say Zhang and Mylvaganam.

"This study estimates, though based on a very strong assumption, that body armour... could bounce off a bullet with a muzzle energy of 320 J."

Actually that's fairly poor. If you believe famous Russian gun nut Max Popenker's stats the nanogecko vest won't even stop ordinary 9mm and .45 pistol rounds. It certainly wouldn't cope against anything saucy like .357 magnum, or God forbid the ridiculous .50 Desert Eagle hand-cannon ammo favoured by movie figures such as Bullet-tooth Tony (Snatch) and Agent Smith (Matrix trilogy). As for rifle bullets - not a chance. The nanotube vest might do against pocket pistols - .22, .32, 9mm short - but nothing more. Assuming it needs to bounce the bullets to work, at least.

On the other hand, Zhang and Mylvaganam reckon their 320-J-bouncer armour would be only a tad over half a millimetre thick. Presumably, heftier stuff would bounce pokier bullets.

But the most troublesome part is the idea that bouncing a bullet is better than just stopping it. Conservation of momentum would seem to mean that bullets which bounce off at any speed would impart a larger impulse to the target than ones which simply stop. If the nanogecko armour is a rigid plate which doesn't deform on being hit, that might not be a problem; but the comparison with kevlar suggests half-millimetre, fairly flexible fabric from which bullets will bounce.

The IOP says it is "devoted to increasing the understanding and application of physics." It doesn't seem to be doing a brilliant job in this instance. ®

Remote control for virtualized desktops

More from The Register

next story
I'll be back (and forward): Hollywood's time travel tribulations
Quick, call the Time Cops to sort out this paradox!
Antarctic ice THICKER than first feared – penguin-bot boffins
Robo-sub scans freezing waters, rocks warming models
Your PHONE is slowly KILLING YOU
Doctors find new Digitillnesses - 'text neck' and 'telepressure'
Reuse the Force, Luke: SpaceX's Elon Musk reveals X-WING designs
And a floating carrier for recyclable rockets
Britain's HUMAN DNA-strewing Moon mission rakes in £200k
3 days, and Kickstarter moves lander 37% nearer takeoff
Bond villains lament as Wicked Lasers withdraw death ray
Want to arm that shark? Better get in there quick
prev story

Whitepapers

Go beyond APM with real-time IT operations analytics
How IT operations teams can harness the wealth of wire data already flowing through their environment for real-time operational intelligence.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
10 threats to successful enterprise endpoint backup
10 threats to a successful backup including issues with BYOD, slow backups and ineffective security.
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.