Scientists have created a new light-activated ink that can change color on demand. It’s made up of microbeads of different colors that rise or sink in response to different wavelengths of light so ...

In the sci-fi novel “The Diamond Age” by Neal Stephenson, body art has evolved into “constantly shifting mediatronic tattoos” – in-skin displays powered by nanotech robopigments. In the 25 years since ...

Tattoos have long been a way for people to express their personal style, beliefs, and creativity. However, the commitment to permanent ink can be daunting for some, leading many to seek alternatives ...