Scientists Create Color-Changing Graphene Bubbles For Rollable TVs

Posted: Nov 26 2016, 9:21am CST | by , in News | Latest Science News

 
Scientists Create Color-Changing Graphene Bubbles for Rollable TVs
An artist’s impression of the graphene pixel. Image credit: Delft University via The Verge
  • TV Screens of the Future could be Rolled up like a Sheet of Paper

It so happens to be the case that TV screens of the future could be rolled up like a sheet of paper because Dutch scientists create ‘mechanical pixels’ useing color-changing graphene bubbles.

TV screens and smartphones that can be rolled up like a sheet of paper are the wave of the future. Scientists have found a type of graphene bubble that can shift its colors as it undergoes expansion and constriction.

Such pixelation could form the screens of the times to come. They will be agile, very tough and more energy-saving than LED technology.

Researchers in the Netherlands invented this technology. Graphene is as thick as a single atom. It is made of carbon. This wonderful substance is ready to radically change the game in a number of fields such as medicine, engineering and commercial construction projects.

200 times more tough than steel, graphene forms sheets that are like cling-film and could miraculously hold the weight of a whole elephant. Since the discovery of pixels, these graphene layers could be also made to change colors.

Scientists are currently working on prototypes. By the time 2017 rolls in, a proper model of the device could be ready, according to The Verge.

Two silicon panels were set up side by side with two graphene sheets. The silicon panels have holes about the same width as a human being’s hair breadth.

The graphene layer stretches across these like the skin on a bongo drum. When pressure is put on these, the graphene changes color. The bubbles of graphene become convex or concave depending on the pressure that is applied on them.

Light is refracted differently due to this and so the colors change rapidly. In its original form, graphene is transparent. Yet with double layers of graphene, this color change could be brought about.

The whole device is energy-efficient to boot. The only hitch right now is that the screens made this way are only to be seen in sunlight. They do not work very well in a dark room.

This all could change in the future when the contraption will undergo some finetuning. The technology is also very expensive to make right now. Also pure colors have not been extricated from the bubbles just yet.

Pure red and pure blue have yet to be seen in the colors produced by these graphene bubbles. Controlling the pressure exerted on the bubbles may help. A lot still needs to be done.

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