Not circuit diagrams. Any old pen can do that. No, the pen is a rollerball with silver ink that can actually draw real, working circuits. The ink dries to leave silver trails behind on the paper ...

Silver pen has the write stuff for flexible electronics. ScienceDaily . Retrieved May 9, 2025 from www.sciencedaily.com / releases / 2011 / 06 / 110628151632.htm ...