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Photochromic nanoparticle inks enable rewritable tattoos
Original: Programmable pigments: Photochromic nanoparticle inks for rewritable tattoos
Researchers report programmable pigments: photochromic nanoparticle inks that can be applied as tattoos and later rewritten or erased by light exposure. The technology, described in the journal Matter, points to dynamic body art and potential medical uses such as reversible skin-based displays or indicators. Readers are debating how practical rewritable tattoos could be, and what safety and regulatory questions light-activated skin inks would raise.
Why now: The novelty of light-rewritable tattoo inks published in a scientific journal is drawing attention and debate.
Matter (journal)photochromic nanoparticle inks
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