Fitted with nanoscale grippers, these microrobots offer new opportunities for imaging and manipulating single cells. Scientists have created a family of laser-operated microrobots that can handle one of life’s tiniest units: the cell. The nanoscale robots can grip, move, and rotate single cells, which are 30 to 40 micrometers large. The precision these microrobots offer for imaging single cells and their ability to manipulate interactions between them magnify researchers’ ability to answer funda...