Interaction between Excitonic Dipoles (image) Forschungsverbund Berlin Share Print E-Mail Caption Interaction between excitonic dipoles: (a) excitons in stacked bilayers consisting of GaAs quantum wells (QWs). (b) Excitons in the upper bilayer induce, via the attractive inter-bilayer excitonic interaction, exciton accumulation in the lower bilayer. Credit Paulo V. Santos, Mikhail Lemeshko, and Ronen Rapaport Usage Restrictions The image may only be used with appropriate caption and 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.