A group of researchers from Tohoku University, JAERI and Technical University of Kaiserslautern, have successfully obtained a flow of magnetism, or a spin current, from sound waves. In the experiment, electrodes generated electrical signals, which were then measured, while sound waves produced by a piezoelectric element were put directly into the interface between a metal layer and a layer made of magnetic material. Once the spin current is created and detected, the team used the reverse spin Hall effect to convert the spin current into an electrical voltage. Learn more from Geekosystem. Watch a video about the technology.
Researchers Convert Sound Waves into Electromagnetic Energy
