On-the-spot drug delivery with light-controlled organic microswimmers

Science fiction novelists couldn't have come up with a crazier plot: microrobots streaming through blood or through other body fluids that are driven by light, can carry drugs to cancer cells and drop off the medication on the spot. What sounds like a far-fetched fantasy, it is the short summary of a research project now published in Science Robotics. The microswimmers presented in the work could one day perform tasks in living organisms or biological environments that are not easily accessible. Looking even further ahead, the swimmers could perhaps one day treat cancer or other diseases.