Journal Article 1D van der Waals heterostructures Research Support, Non-U.S. Gov't anthracene flakes bottom-up method carbon nanotube templates chemical vapor deposition chirality molybdenum trioxide nanotubes noncontact manipulations parallel aligned array on surfaces single-crystalline/single-walled selectivity single-molecule devices single-walled carbon nanotube (SWNT) structure control ultralong carbon nanotubes visible chirality recognition