Femtosecond Lasers Used To Color Metals
Maximum Prophet writes "An optics professor and a postgrad have developed a way to use ultra-short pulses of laser light to etch nano features into the surface of metals so that they can absorb or reflect specific wavelengths of light. This is very similar to the way that butterflies get the color in their wings."
Argh - that joke is so fucking old. Way to be creative.