Silk HDD Stores Optical Data

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Silk HDD stores optical data
Researchers in the US and China have made the first-ever silk HDD using a technique called tip-enhanced near-field infrared nanolithography (TNINL). The device, which can store digital data with a density of 64GB per square inch, is robust in the face of harsh conditions such as heat, moisture, gamma radiation or high magnetic fields. While a silk-based HDD is unlikely to match the speed and storage capacity of state-of-the-art SSDs at the same cost, its unique set of features makes it promising for electronics that could be implanted in the body.

Heights and AFM topography of dots written with different frequencies
and exposure times of the incident laser.
(Courtesy: M Liu)