April 20, 2007
Printed RFID Already?
Printed RFID circuits may be here sooner than expected. And all it takes is a regular desktop printer. And a special solution containing Vitamin C and silver nitrate. A PhD student at Leeds University in the UK ran a test on a Hewlett-Packard inkjet printer. The result of using this is the ability to produce mobile phone antennas, RFID chips, and other circuits. Each circuit is reprinted several times to increase conductivity, in case ink dots are not touching.
There's no indication of what this costs, and the use of silver nitrate might raise environmental issues. (Silver nitrate is used to create silver halide, which is then used to process black and white photographs.) However, if the compound is safe and the cost feasible, it might be a better solution than other methods of producing printed RFID chips.
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