Cu-Al-Ni Alloy (IMAGE) University of the Basque Country Caption Pillars were built using the Cu-Al-Ni alloy, each one with a diameter measuring about 500 nm (half a micrometre). Credit José María San Juan / UPV/EHU Usage Restrictions None 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.