Optical Cavity Effects in a Bare Core Particle (Upper) and a Core Particle Coated with a Shell (Uppe (image) American Institute of Physics Share Print E-Mail Caption The optical cavity effects in a bare core particle (upper) and a core particle coated with a shell (upper). Shown are variations in the square of the local light intensity I2, which can be used to spatially control the generation of electrons. Credit Stavros Amanatidis, Bruce Yoder and Ruth Signorell Usage Restrictions This image may be used only with appropriate credit. Share Print E-Mail 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.