Smaller, faster, more energy-efficient—this is the goal that developers of electronic devices have been working towards for years. In order to be able to miniaturize individual components of mobile phones or computers for example, magnetic waves are currently regarded as promising alternatives to conventional data transmission functioning by means of electric currents. The reason: As chips become smaller and smaller, electrical data transmission at some point reaches its limits, because electrons that are very close to each other give off a lot of heat—which can lead to a disruption of physical processes.
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Source: Phys.org