Ever wish you could taste all of the delicious food you see online? Well, that may become a reality sooner than later, thanks to a novel taste display proposed by Japanese researchers at Meiji University. This device uses ion electrophoresis spread across five gels containing electrolytes that supply controlled amounts of each of the five basic tastes. When an electric current flows through it, an arbitrary taste is applied to the user’s tongue, similar to how modern displays are able to produce multiple shades using three basic colors (RGB).
If there is no electric current, you will be able to taste all five gels at once, but electricity suppresses the sensation of each of the five basic tastes. Despite there being similar inventions in the past, this is the first to use an electric current for electrophoresis rather than using a liquid solution to deliver the taste.
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