Photonic Sorting of Aligned, Crystalline Carbon Nanotube Textiles.

ABSTRACT: Floating catalyst chemical vapor deposition uniquely generates aligned carbon nanotube (CNT) textiles with individual CNT lengths magnitudes longer than competing processes, though hindered by impurities and intrinsic/extrinsic defects. We present a photonic-based post-process, particularly suited for these textiles, that selectively removes defective CNTs and other carbons not forming a threshold thermal pathway. In this method, a large diameter laser beam rasters across the surface of a partly aligned CNT textile in air, suspended from its ends. This results in brilliant, localized oxidation, where remaining material is an optically transparent film comprised of few-walled CNTs with profound and unique improvement in microstructure alignment and crystallinity. Raman spectroscopy shows su

SUBMITTER: Bulmer JS 

PROVIDER: S-EPMC5636898 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature