A Japanese research group developed a new conductive ink that enables to form a fine circuit pattern on a cloth by one-time printing.
Even when the cloth is stretched to expand its length by three times, the conductivity of the circuit pattern is still high.
To realize a conductive ink whose conductivity does not lower even when it is stretched, the research group used a fluorine-based surfactant in addition to silver (Ag) flakes (conductive material) and fluorine-based rubber (solvent).
“Silver is precipitated on the surface of the rubber, forming a ‘conductive network’ and making it easy to secure a path for electric conduction,” Someya said.
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