Figure 4: This is how you reference an individual item within a multi-dimensional array. That's just a quick demonstration of how you can set up multi-dimensional arrays in PowerShell.

Silicon integrated circuits, which are used in computer processors, are approaching the maximum feasible density of transistors on a single chip -- at least, in two-dimensional arrays.

Such a strategy has now been applied by X. S. Zhao and co-workers at the National University of Singapore to create two-dimensional arrays of ‘nano-vials’.