title: Isotope labeling of carbon nanotubes and formation of (12)C-(13)C nanotube junctions.
authors.affiliation: Department of Physics and Tsinghua-Foxconn, Nanotechnology Laboratory, Tsinghua University, Beijing, 100084, China.
authors.forename: L
authors.initials: L
authors.lastname: Liu
authors.forename: S
authors.initials: S
authors.lastname: Fan