How to fit 300 DVDs on one disc

A new optical recording method could pave the way for data discs with 300 times the storage capacity of standard DVDs, Nature journal reports.The researchers say this could see a whopping 1.6 terabytes of information fit on a DVD-sized disc.They describe their method as "five-dimensional" optical recording and say it could be commercialised.The technique employs nanometre-scale particles of gold as a recording medium.Researchers at Swinburne University of Technology in Australia have exploited the particular properties of these gold "nano-rods" by manipulating the light pointed at them.The team members described what they did as adding two "dimensions" to the three spatial dimensions that discs already have.They say they were able to introduce a spectral - or colour - dimension and a polarisation dimension.