Plastic sheet delivers wireless power

Wireless PowerAnnoyed by the tangle of power cords under your desk? A sheet of plastic invented by researchers in Japan could one day make for tables and walls that power devices placed on them — without any need for wires or plugs. Computers could be powered through the desks on which they sit, for example, or flat-screen televisions through the walls where they hang.

The team of seven researchers at the University of Tokyo has produced a sample sheet of the plastic, which is about the size of a very thin magazine — just one millimetre thick and weighing 50 grams. It can deliver up to 40 watts of power to products on or near it that contain a special 'receiving coil': enough to power a lightbulb or a very small laptop. They say that scaled-up production of such sheets could be inexpensive enough for widespread installation in desks, floors, ceilings and walls, ushering in a "new class of electronic devices".

The image on the left shows the plastic sheet powering an LED (light) at the bottom of a bowl containing water and a live fish.

Link & Image: Nature
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