(IMAGE) Physikalisch-Technische Bundesanstalt (PTB) Caption Bent magnetic nanowire made of a nickel/iron alloy. The heating wire (right) generates a temperature difference between the electric contacts of the nanowire. If a magnetic wall is captured at the indentation, the thermoelectric voltage measured between the contacts changes. Credit PTB 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.