that a lot of people are familiar with, just what happens to people when they go through often times because you can't target necessarily where the medicine is going to go. >> exactly. in the case of cancer chemotherapy, you want the medicine to go to the tumors and you don't want it to go to the intesti intestines, to the hair, where there are side effects. >> and at georgia tech, you can get it exactly where it needs to go using lasers, explain. >> it's a combination of a laser and small nano particles. we use the laser to heat up the particles. there's a chemical reaction that takes place which generates a microscopic explosion. and that small explosion opens up cell membranes so that it cowl enter the cell it wouldn't normally enter. >> how specific an area could you target? >> the targeting ability is base on one, where you inject the carbon particles, and then two,