Home Physics The smallest pixel ever made can illuminate buildings whose colors change

The smallest pixel ever made can illuminate buildings whose colors change

Color pixels developed by a team of scientists run by the University of Cambridge are compatible with the production of flexible plastic films, while significantly reducing production costs.

The results are given in the Advancement of Science. long dream is to imitate skin that changes the color of an octopus or octopus, which allows people or objects to disappear in the natural background, but creating screens that are more flexible with large areas is still too expensive, because they are built with high precision. several layers.

In the middle of the pixels, developed by scientists from Cambridge, are tiny gold particles measuring several billion meters. The grains are on the reflective surface and trap light in the gap between them. Around each grain is a thin, sticky layer that changes chemically with an electric switch, resulting in a shift of pixels across the spectrum.

Scientists from various disciplines, including physics, chemistry, and manufacturing, make pixels by covering the container with gold grains which are covered with an active polymer called polyaniline, then spraying it on flexible mirror-coated plastic to drastically reduce production costs.Pixels are the smallest pixels but are still made, millions of times smaller than ordinary smartphones.

They can be seen in bright sunlight, because they do not require constant power to have the colors given to get the energy properties that make large areas sustainable and sustainable. “We washed it in food packages containing aluminum, but later found that spraying aerosols was faster, said co-founder of the author Hyon Yong-Ho from Cambridge laboratories in Cambridge.

This is not a normal nanotechnology tool, but such a radical approach is needed to make sustainable technology feasible, said Professor Jeremy Baumarg Center in the Cavendish nanophotonics laboratory in Cambridge, which led the research.

The strange physics of light at the nanoscale can be included, even though less than a tenth of the film is covered with our active pixels. This is because the real size of each light pixel is far greater than its physical range, if this golden resonance architecture is used.


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