X-Ray Images (image) University of Copenhagen - Niels Bohr Institute Share Print E-Mail Caption The X-ray images of each nanowire show the distribution of the scattering intensity and the mechanical strain in the core of gallium-nitride and the shell of indium-gallium-nitride. The strain shows that the shell fits perfectly with the core. Credit Credit: Tomas Stankevic, Niels Bohr Institute, University of Copenhagen. Usage Restrictions Credit: Tomas Stankevic, Niels Bohr Institute, University of Copenhagen. 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.