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Researchers from the University of Sussex have reportedly defied a long-standing belief about magnetic coupling. Like a electrical diode that only lets current flow in one direction, the researchers have created a "magnetic diode" that only allows most energy to flow in one direction. The full research paper is available online, for a price, and they say the research could have a major impact on wireless power transfer.
Dr Prat-Camps said: "The magnetic coupling between magnets or circuits is something extremely well-known. It dates back to the seminal works of Faraday and Maxwell and it is deeply embedded into the four Maxwell equations that describe all electromagnetic phenomena. A vast majority of the technologies we rely on today are based on magnetic coupling including motors, transformers, low-frequency antennas and wireless power transfer devices. As far as we know, nobody before us thought to ask whether this symmetry could be broken and to what extent." The researchers are hopeful the findings could have wide implications. Technology reliant on magnetically-based wireless power transfer includes the vast majority of everyday electronic devices like mobile phones and laptops.
Dr Prat-Camps said: "The magnetic coupling between magnets or circuits is something extremely well-known. It dates back to the seminal works of Faraday and Maxwell and it is deeply embedded into the four Maxwell equations that describe all electromagnetic phenomena. A vast majority of the technologies we rely on today are based on magnetic coupling including motors, transformers, low-frequency antennas and wireless power transfer devices. As far as we know, nobody before us thought to ask whether this symmetry could be broken and to what extent." The researchers are hopeful the findings could have wide implications. Technology reliant on magnetically-based wireless power transfer includes the vast majority of everyday electronic devices like mobile phones and laptops.