Tattoos you can turn on and off

(livescience.com)

27 points | by MortyDev 7 hours ago ago

8 comments

  • phyzome 10 minutes ago

    Despite the limitations, that is dope as heck.

  • Retr0id 22 minutes ago

    A cool concept, but regular daylight making it disappear again sounds pretty annoying.

  • teucris 44 minutes ago

    Instead of focusing on tattoos, could we work on this being used for bistable displays, like e-ink but using light pulses to transition each pixel?

  • xgulfie 2 hours ago

    So much hype in the article and in the paper for it being "programmable" when it's just... UV reactive? Like, cool but calm down

    > In outdoor daylight conditions, including shade, the UV content of incident sunlight is sufficient to activate PhotoTat to a photostationary state

    https://www.cell.com/matter-light/fulltext/S3117-5848(26)001...

  • sleepyguy 2 hours ago

    Your auto-immune system does not like ink.

    • yahthatsart an hour ago

      You don't have an "auto-immune system". Auto-immune means your immune system is attacking your own healthy cells.

      Tattoos are fine. There's some evidence that maybe, maybe, immune system responses can be impacted by tattoos. But changes in immune system response does not necessarily mean impaired or negative.

  • silicon3383 an hour ago

    Does it turn the lymphedema off too?