by Kathy Jones on  April 5, 2012 at 10:47 PM Dental News
 Tooth Tattoo Tastes Illness on Breath
An ultra-sensitive 'early warning system' for disease has been developed via graphene. The tiny sensor created from graphene can be 'tattooed' onto teeth.

In tests, a student breathed onto the sensor - actually implanted on a cow's tooth - and it picked up molecules of bacteria on his breath.

Michael McAlpine and his team at Princeton, who developed the 'tooth tattoo', believe the sensors could be used for military personnel in the field to determine whether a wound has become infected, or in hospitals where patients with weakened immune systems are extra vulnerable to bacteria, the Daily Mail reported.

The scientists created the remote chemical sensor with graphene, a one-atom-thick layer of carbon, which is very sticky and has a super-sensitive surface.hey then planted carefully constructed peptides (a sequence of amino acids) onto the surface of graphene. McAlpine and his team have shown the sensors can detect bacteria individually picking them up like Velcro.cAlpine is currently planning to license and commercialise the device.

Source: ANI

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