Matt Zielinski writes, "I recently learned that you collect images of science tattoos. Attached is a photo of a tattoo I recently had done. I wanted a biomechanical theme to the piece with a special focus on the material chemistry that could potentially be used if this piece of sci-fi comes to life. The tattoo starts on the left with simple atoms and molecules (water, NO3) and evolves into the organic chains. Those macromolecules are PEEK, PEI, and polysulfone, all of which are engineered polymers commonly used in the medical device industry today. They can also ...