title: Healing of broken multiwalled carbon nanotubes using very low energy electrons in SEM: a route toward complete recovery.
abstract: We report the healing of electrically broken multiwalled carbon nanotubes (MWNTs) using very low energy electrons (3-10 keV) in scanning electron microscopy (SEM). Current-induced breakdown caused by Joule heating has been achieved by applying suitably high voltages. The broken tubes were examined and exposed to electrons of 3-10 keV in situ in SEM with careful maneuvering of the electron beam at the broken site, which results in the mechanical joining of the tube. Electrical recovery of the same tube has been confirmed by performing the current-voltage measurements after joining. This easy approach is directly applicable for the repairing of carbon nanotubes incorporated in ready devices, such as in on-chip horizontal interconnects or on-tip probing applications, such as in scanning tunneling microscopy.
authors.affiliation: Department of Physics, India Institute of Technology Bombay, Mumbai, India.
authors.forename: Neha
authors.initials: N
authors.lastname: Kulshrestha
authors.forename: Abhishek
authors.initials: A
authors.lastname: Misra
authors.forename: Kiran Shankar
authors.initials: KS
authors.lastname: Hazra
authors.forename: Soumyendu
authors.initials: S
authors.lastname: Roy
authors.forename: Reeti
authors.initials: R
authors.lastname: Bajpai
authors.forename: Dipti Ranjan
authors.initials: DR
authors.lastname: Mohapatra
authors.forename: D S
authors.initials: DS
authors.lastname: Misra
mesh_terms: D003460:Crystallization / Q000379:methods*; D004583:Electrons; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning / Q000379:methods*; D008968:Molecular Conformation / Q000528:radiation effects; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011829:Radiation Dosage