Plasmonics takes advantage of the collective oscillation of electrons on the surface of a metal and their effect on light absorption and reflection. Due to their very short wavelength and low loss at high frequencies, plasmons are good candidates for optical communication on computer chips, high resolution lithography and microscopy, and molecular sensors. Light absorbing plasmonic materials could also be used to improve the efficiency of solar cells. In the future, plasmonics could combine the best of electronic and optical circuits by transmitting electrons and light at the same time using the surface of the device.