Small , cheap smart - tag equipment that are printed as digital circuits in roll like newsprint could help kickstart the wireless defrayal industry . The devices , known as rectennas , coalesce a rectifier – which exchange current from AC to DC – with an feeler , and can harness power directly from radio wafture given off by a nomadic phone .
Developed by a squad at Sunchon National University and Paru Printed Electronics Research Institute in South Korea , the rectenna is establish on Near Frequency Communication ( NFC ) engineering , an update to the more conversant RFID standard encounter in London Underground ’s Oyster ticketing system , for example .
NFC chips can be used to go after many of the same thing RFID chips can , from pets to luggage to boxes in a storage warehouse . The slayer app is likely to be contactless payment , where payments are made by waving a reviewer in a phone over an NFC price tag . Though this engineering has been touted for a few yr now – and world-wide payments by NFC - enabled phone are predicted toreach $ 50 billion – its uptake has been slow , mostly due to the monetary value of install millions of equipment . The new rectennas would lend the price down to as small as 1 centime per unit , the team says .
The back - and - forth exchange of information between a lecturer and a cheap printed tatter would also make peer - to - peer or local Bluetooth - same communicating possible . [ Nanotechnology ]
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