Diagram of Cross-Linked Copper Complex in Polymer (image) Okinawa Institute of Science and Technology (OIST) Graduate University Share Print E-Mail Caption The copper mechanophore links two polymer chains together. When the polymer is stretched (force = F), the mechanophore glows brighter. Credit OIST Usage Restrictions Credit to OIST 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.