Phoamtonics (IMAGE) Princeton University, Engineering School Caption In a combination of chemistry, physics and materials science, Princeton researchers found that a type of foam can selectively block light, which is important for next-generation devices that compute with light instead of electricity. A computer model of the foam, above, shows the energy density of light as it passes through the foam. Credit Image courtesy of the researchers Klatt et al. Usage Restrictions For non-commercial use 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.