, 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 ...

This week we have featured a number of new inventions in the form of the Liquid Metal Inkjet Printer Ink and the Ex1 PCB 3D Circuit Board Printer that have been designed to print liquid metal on to ...

Forget printing circuits: how about drawing ’em instead? At least, that’s what you can do with this rollerball, which spews out conductive silver ink to let you doodle circuits all day long. The ...

A team of MIT chemists have created a carbon nanotube "lead" that can be used to draw freehand electronic circuits using a standard, mechanical pencil. In a normal pencil, the lead is usually ...