Color Detectors (IMAGE) California Institute of Technology Caption this is an artist's representation of a conceptual design for the color detector, which uses thermoelectric structures with arrays of nanoscale wires that absorb different wavelengths of light based on their width. Credit Harry Atwater and Kelly Mauser/Caltech Usage Restrictions For use in new stories only 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.