Nanotubes and other nanoclusters of both carbon and boron nitride are contr
ollably grown by simple surface self diffusion, both homogenously and heter
ogeneously, following a mechanical ball-milling preparative stage. Brief co
mparisons are drawn with the nucleation and growth of nanostructures during
ionizing irradiations of varying degree on graphite and molybdenite target
surfaces. (C) 1999 Published by Elsevier Science B.V. All rights reserved.