There's little that I find more depressing or exasperating than coming home to see a huge pile of dirty dishes. Washing dishes is the worst. Really, that's why the dishwasher was invented. But loading and unloading dishwashers also can be something of a tedious chore. So we should all be thrilled that Tomorrow Machine, a Swedish design company, has invented this self-cleaning plate and bowl.
These are made entirely of cellulose — plant pulp — finished with a water-repellent coating found in nature on the leaves of lotus plants, nasturtiums, and elephant's-ear plants, and on the wings of some butterflies. These biological structures are water-repellent because they are roughened at a nano-scale level. This minimizes adhesion, causing droplets of water to bead rather than flatten. This means they easily roll off, taking dirt particles with them. For the lotus plant, this kind of coating keeps the plant's leaves free of dirt and contaminants, helping to ward off disease and parasites.
What does this mean for you? That cleaning this plate is as easy as tipping it over and watching the gunk roll off. No scrubbing necessary. Just like a lotus leaf:
The material is produced from a sheet of cellulose which is then pressed into a mold, making the cellulose harden like ceramic. The result is a plate lighter than ceramic, but which won't shatter when dropped.
The one big problem? The water-repellent coating is not yet approved for food consumption. That's a pretty big stumbling block, and only rigorous testing will tell whether hydrophobic coatings are safe to serve up food for human consumption. This means that it could be awhile before we see these plates used in homes and restaurants.
The plate was created for a project called Ekoportal 2035, commissioned by the Swedish Forest Industries Federation. They asked Tomorrow Machine and research institute Innventia to create three products that explore potential future uses for cellulose created from materials from Swedish forests.
Beside the self-cleaning plate and bowl, the project also produced a transparent digital touch screen made from nano-cellulose, and an item made from a cellulose-based plastic that can be 3D-printed.
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