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 ...

, 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 ...

When we were young, Physics and Electronics classes used to be from another space. Our textbooks used to be full of drawing of squiggly lines that would be in the form of a box, and we were expected ...