From the processors in phones to the motherboards of computers, silver tracings of electronic circuitry underlie many common devices. But scientists are now putting circuit design in the hands of the public with pens that can draw with conductive ink.
This new ink can be loaded into a regular ballpoint pen and lets users sketch out electrical circuits on paper, reports Prachi Patel for Chemical & Engineering News. The ink itself is a mixture of silver salt and adhesive rubber that can stick to various surfaces. The rubber helps the circuits stretch and bend without losing their conductivity, the researchers report in ACS Nano.
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