metal tankA new eco-friendly method of manufacturing metal for antennas or circuits uses a special ink and electroless solution to actually grow the metal right on the surface. The solution contains metals that are drawn (forgive the pun) to the ink. This process cuts costs in half and makes it much more environmentally friendly (always a good thing). Privacy advocates might not be so happy, since the main use of this technology is going to be RFID tags and cost reductions will mean more widespread use. Other uses include WiFi-blocking wallpaper and antennas embedded in cellphone casings.

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Grow your own circuits