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MIT's “Programmable Matter” Technique: A Zap of Light Switches Objects’ Colors and Patterns - SciTechDaily

MIT's “Programmable Matter” Technique: A Zap of Light Switches Objects’ Colors and Patterns - SciTechDaily

MIT's “Programmable Matter” Technique: A Zap of Light Switches Objects’ Colors and Patterns - SciTechDaily
May 05, 2021 1 min, 9 secs

A new system uses UV light projected onto objects coated with light-activated dye to alter the reflective properties of the dye, creating images in minutes?

The system, dubbed “ChromoUpdate” pairs an ultraviolet (UV) light projector with items coated in light-activated dye.

The projected light alters the reflective properties of the dye, creating colorful new images in just a few minutes.

An ultraviolet (UV) light projector is used on a cell-phone case coated in light-activated dye.

The projected light alters the reflective properties of the dye, creating images in just a few minutes.

That method was “the first to show that we can have high-resolution, multicolor textures that we can just reprogram over and over again,” says Wessely.

Next, the dyes were selectively desaturated with a visible light projector, bringing each pixel to its desired color and leaving behind the final image.

“We can accelerate the process,” says Wessely.

Rather than using an LED, which uniformly blasts the entire surface, ChromoUpdate uses a UV projector that can vary light levels across the surface.

“You can actually have a physical prototype to see if your design really works,” says Wessely.

“One example is your coffee mug,” says Wessely.

“We’re looking at methods to dye fabrics and potentially use light-emitting fibers,” says Wessely.

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