NEMS Mass Sensor Small (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption A double-walled carbon nanotube NEMS has been used to measure the mass of a single atom of gold. Atoms landing on the tube change the tube's resonant frequency in proportion to the mass of the atoms, much like what happens when a diver hits a springboard. Credit image by Kenneth Jensen Usage Restrictions None 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.