In case anyone is wondering what they mean by "5D": they mean it's a 3D array of marks, each of which has both size and orientation. The 3D array is three 2D layers.
According to this definition, a DVD or Blu-Ray disc is "4D" because it can have multiple layers each of which stores 1-dimensional data (pit versus no pit). And a book is at least "7D" because it contains a 3D arrangement of marks, and marks can vary in (at least) what letter they are, how large, how bold, and how slanted. (It would be easy to add to that list.)
I would describe this thing as 2.5D storage: it's basically 2-dimensional but with multiple layers.
If it's genuinely 10000x denser than Blu-ray, great! If it's likely to last longer, also great! But there's no need for this "five-dimensional" bullshit.
(It looks to me as if what they have at the moment is not anything like 10000x denser than Blu-ray. I'm not sure it's even 1x denser than Blu-ray at present.)
According to this definition, a DVD or Blu-Ray disc is "4D" because it can have multiple layers each of which stores 1-dimensional data (pit versus no pit). And a book is at least "7D" because it contains a 3D arrangement of marks, and marks can vary in (at least) what letter they are, how large, how bold, and how slanted. (It would be easy to add to that list.)
I would describe this thing as 2.5D storage: it's basically 2-dimensional but with multiple layers.
If it's genuinely 10000x denser than Blu-ray, great! If it's likely to last longer, also great! But there's no need for this "five-dimensional" bullshit.
(It looks to me as if what they have at the moment is not anything like 10000x denser than Blu-ray. I'm not sure it's even 1x denser than Blu-ray at present.)