Figure 2 (IMAGE) Tohoku University Caption (a) Schematic of the spin rectifier device (magnetic tunnel junction) and its scanning electron microscopy image. (b) Demonstration of energy harvesting. The generated voltage output by an array of spin rectifiers is connected across a capacitor to a DC-to-DC booster converter. The amplified voltage output by the converter powers the temperature sensor. The multimeter displays the output voltage of the spin rectifier array (24.1 mV) and the temperature sensor displays the room temperature (23.4 ℃). Credit ©Shunsuke Fukami & Hyunsoo Yang 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.