It’s been known for a couple of years that heating a hard drive platter can help when writing information, but the effect wasn’t fully understood until now. Researchers from Eindhoven University have developed a theory that explains the effect, and allows them to make predictions about the limits in write speed for several materials.
The new theory was published in the Nature Materials magazine earlier this week. According to the researchers, bits might be written in just 100 femtoseconds using the right laser pulses to heat the area that’s being written to. Future research might make it possible to write data to magnetic storage media such as hard drives and tapes using just a laser. This might be achieved using a circular polarization in the laser.
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