Soap Bubble Screen Display Is Flexible & World's Thinnest

Though the bubble mixture used here is more complex than the normal soaps we use, but soap is still the main ingredient here. Researchers have created a flexible 'Soap Bubble Screen' which is apparently the world's thinnest transparent display. Since the surface of a soap bubble is a micro membrane, light to passed through it and color is displayed on its structure. These researchers from University of Tokyo, Carnegie Mellon University and University of Tsukuba developed a BRDF (bidirectional reflectance distribution function) screen by using the mixture of two colloidal liquids.

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The team controls the transparency and reflectance of this screen by hitting the bubble's membrane with ultrasonic sound waves, played through speakers. These waves alter the texture of a projected image, making it look smooth or rough. Check an interesting video regarding the same here -


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