Optical Micro-Pliers (IMAGE) University of Warsaw, Faculty of Physics Caption The optical pliers next to the mandibles of a Formica polyctena ant for comparison (composite scanning electron microscope (SEM) image with added colors). The two jaws (red) close when light is sent through the optical fibers (light blue) that have the diameter of 125 microns, comparable to the diameter of a human hair. (Source: UW Physics) Credit Source: UW Physics Usage Restrictions The image may only be used with the following caption: The optical pliers next to the mandibles of a Formica polyctena ant for comparison (composite scanning electron microscope (SEM) image with added colors). The two jaws (red) close when light is sent through the optical fibers (light blue) that have the diameter of 125 microns, comparable to the diameter of a human hair. (Source: UW Physics) License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.