This is just too cool for words.

All we need now is some decent nanites (for analyzing blood pH levels inside the body, etc.) and you've got a solid needle-less system for monitoring and injecting patients. No cutting required!

Talk about fast:

The students were able to control the jet velocity of the MicroJet from 33 meters per second up to 140 meters per second. The amount of liquid they were able to eject ranged from 45 nanoliters to 140 nanoliters. They tested the MicroJet on agarose gel to mimic human skin and found that they could vary the penetration depth of the liquid from 1 to 8 millimeters.

Damn. Sign me up. Maybe I can now get that UV tat I've always wanted...