[Otik]

Yep, once it's done it can just navigate to the nearest acetone reservoir in the body.

[vladiliescu]

"Making the entire robot dissolve in water is a bit trickier, but the researchers seem confident that it’ll be possible in the near future."

[jokr004]

But if it dissolves in water how is it supposed to make it anywhere inside your body? There's lots of water in there.

[lawlessone]

Contact lenses are ruined by contact with ordinary water but the saline solution and water in our eyes doesn't ruin them.

[sp332]

Same problem, there isn't really any pure water in your body to dissolve robots in either.

[copsarebastards]

I downvoted your comment for the following reasons:

1. If you had read/comprehended the article you would understand how they plan to address this concern.

2. Really, even without reading the article, your comment just shows a failure of imagination. It's really not hard to see how this early prototype might be developed into more mature, useful applications.

[Otik]

Thank you for sharing your reasons for downvoting, but you're wrong. I did read the article, I do understand their plans and I didn't have a failure of imagination. It's cool tech, and I made a flippant joke in response to someone's comment.

Demoing that you can (partially) dissolve something in acetone or even water is not terribly impressive, even if their self-folding and mode of locomotion is pretty cool.