The sculptures are very cool! That said, they're 20 x 80 x 100 microns, so aren't they microsculptures rather than nanosculptures?
> of a size measurable in nanometers or microns.
The typical definition of nanoscale in science is being in the 1–100 nm range. But in common use, micron-sized objects are still considered nanoscale.
One way to think of it is, a part is nanoscale if you would choose nanometers as the length unit on the drawing.