The concept of a buckyshuttle [a buckyball C60
confined but mobile in a short (10,10) nanotube segment] emerged
recently as a possible two-state element, with the C60
located at one or the opposite end of the tube. A triangular
array of such elements, if ever made, would have a maximum
capacity of almost 1018 bit/m2. The van der
Waals forces are responsible for the potential wells at the ends,
and for the friction on the way between them. We will analyze the
feasibility of this idea, the energetics, kinematics (when
switched between 0 and 1), and thermodynamic efficiency .
 R. P. Feynman, "Lectures on Computation",
Addison-Wesley, Menlo Park, 1996.
Boris I. Yakobson, Physics Department, North Carolina State
University, Raleigh, NC 27695, Phone: (919)-515-2426, FAX:
(919)-515-7331, E-Mail: email@example.com