Nanoparticles (IMAGE) University of California - Santa Barbara Caption This is a scanning electron microscope image of polystyrene nanoparticles. These particles are roughly 100 nanometers in diameter, and are readily detected with the analyzer. The uniform size distribution is used to calibrate the instrument. Credit J.L. Fraikin and A.N. Cleland, UCSB 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.