Figure 1 (IMAGE) Tohoku University Caption Thermopile device composed of two materials with opposite polarities of thermoelectric voltage generation by the anomalous Nerst effect. Credit Fujiwara et al. Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original 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.