Tuesday, 14 October 2014

Need for Flash Eliminated



Clicking pictures without flash, at a dark shadowy place seems a problem for everyone. But now its not a big deal. The new imaging sensor could soon make it possible for the photographers to take clear and sharp photos in dim light.

A team at NTU in Singapore, has created  a new light sensor. The sensor is 1000 times more sensitive to light than the presently used sensors in cameras. Because of this property, it receives a high response (or more likely, Photoresponse) from the structure.

Material Used

  • The sensor is made of Graphene.
  • Graphene is a super strong carbon compound with a honeycomb structure.
  • It is nearly one atom thick layer of the mineral graphite.
  • It is as flexible as a rubber.
  • It is more conductive than silicon and, resists heat in a better way as a diamond does.

How ?
The nano structures of graphene would work as 'light tapping nano structures'. These nano structures hold onto light generated electron particles for much longer than conventional sensors.This results in a stronger electric signal which can be processed into an  image as if the photo is clicked from a digital camera.

The graphene based cameras would produce far more better and sharp images than present cameras - claimed by the scientists. Moreover it would lead to cheaper and lighter cameras for all.

The night or dark room photography would at be at a boom through such a technology.

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