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This study proposes an efficient approach that uses a 1064 nm continuous fiber laser to achieve nanoscale welding of crossed multiwalled carbon nanotubes (MWCNTs). We investigate the effects of laser irradiation… Click to show full abstract
This study proposes an efficient approach that uses a 1064 nm continuous fiber laser to achieve nanoscale welding of crossed multiwalled carbon nanotubes (MWCNTs). We investigate the effects of laser irradiation time (from 1 to 6 s) on the structure changes and the welding quality of crossed MWCNTs using a scanning electron microscope, transmission electron microscope, and Raman spectroscopy. The experimental results demonstrate that (1) after 2 or 3 s laser irradiation, moderate temperature of MWCNTs can be formed and can cause a higher degree of graphitization and (2) the degree of graphitization and effective contact of nanowelded MWCNT junctions strongly affects its electrical properties.
Journal Title: Applied optics
Year Published: 2018
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