TY - GEN AU - Hofmann,S AU - Csányi,G AU - Ferrari,A C AU - Payne,M C AU - Robertson,J TI - Surface diffusion: the low activation energy path for nanotube growth SN - 0031-9007 PY - 2005///0902 N1 - Publication Type: Journal Article UR - https://doi.org/10.1103/PhysRevLett.95.036101 ER -