Question

A typical blue ray DVD has a storage capacity of 25 GB, and the information is stored in a circular disk of outer radius of 5.8 cm and hole at the center of radius of 2.3 cm.

a. Imagine if the tracks are entirely made of 20 nm long sized cylindrical Single Wall Carbon Nanotubes with an average tube diameter of 1.5 nm, what will be the storage capacity of such a NANO DVD?

1. b. Can you comment on what will be the storage capacity, if the nanotubes are replaced by spherical buckyballs (C₆₀) of diameter1.5 nm? (7.5 points)
   1. c. In a nanotube has 2.3 x 10¹⁹ carbon atoms per m², determine the ratio of mass densities of nanotube and buckyballs.

Answer 1