, and not much else. But if you replace that metallic ink with real silver, you get something quite remarkable: a pen that can draw functioning circuits on paper. Engineers at the University of ...

Professors Jennifer Lewis and Jennifer Bernhard at the University of Illinois have come up with a way to draw circuits with a pen. Not circuit diagrams. Any old pen can do that. No, the pen is a ...

Designers can make useful products that include electrical components close electrical componentA device in an electric circuit, such as a battery, switch or lamp.. They allow a product to have lights ...