Just hand draw a circuit to make a personalized T-shirt." The circuits the pen can draw may only be limited by what the person holding it can imagine. You Might Also Like ...

American Chemical Society. (2021, January 6). A better pen-and-ink system for drawing flexible circuits. ScienceDaily. Retrieved July 24, 2025 from www.sciencedaily.com / releases / 2021 / 01 ...