Friday 19 June 2015

Graphene and the Thinnest Bulb

Why in news?
  • Researchers have created the world’s thinnest light bulb using graphene instead of tungsten as a filament.
  • Led by Young Duck Kim, a team of scientists from Columbia, Seoul National University, and Korea Research Institute of Standards and Science have made it possible.
So, what is so special about the new bulb?
  • It uses Graphene as a filament
    • Graphene is an allotrope of carbon and is famous for being stronger than steel and more conductive than copper.
    • See below for more info!

    • Just like our very own bulbs, when an electric current runs through the filament, it heats up enough to emit light.
    • BUT, the visible light from atomically thin graphene is so intense that it is visible even to the naked eye, without any additional magnification.
    This graphene light is low cost with a relatively simple structure.
    Applications of Graphene bulb:
    • It can be used as ‘broadband’ light emitter and can be integrated into chips. 
    • This will pave the way towards the realisation of atomically thin, flexible and transparent displays and graphene-based on chip optical communications.
    Let's know more about Graphene:

    [Source: The Hindu, CNN (for images), Wikipedia]


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