What does this number measure?
The dimension of 50 nm concerns the width of a string on Cornell's 1997 demonstrator. Its horizontal length is symbolic in this drawing. It does not describe the size of the whole guitar.
Compare the stated dimensions
The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.
Source and limitations
Representative or rounded dimensions according to the source; these are not a confidence interval.
Representative section of an etched silicon nanoguitar string, not a coiled metal string. The 50 nm width is measured on the top face; the shaded relief and the fragment's horizontal length are interpreted.
Documented construction or demonstration: 1997.