Discussion Topic Posted for the NANOTUBE-99 Workshop:

As shown by us in Physics Letters A250 (1998) 360, nanotubes may serve as x-ray (or thermal neutron) waveguides if they have large enough internal diameter and wall thickness.
(Posted by Nick Zhevago on 2 Feb 1999)

5.1. "Thermodynamic Consideratons for Single- and Multi-Wall Tubes"
by David Tomanek

5.2 "Diameter Increase Upon Thermal Annealing"
by Patrick Bernier

This document at the URL https://nanoten.com/conf-org/NT99/puzzles/5.html
has received 00250 hits since August 2, 2020.