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. 2019 Sep 27;5(9):eaax1166. doi: 10.1126/sciadv.aax1166

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Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 1 — (A) Schema representing the excitation and emission fluorescence setup with UV illumination. (B) Wide-field NIR image of (10,2) CNTs spin-coated on polyvinylpyrrolidone (PVP) illuminated with a 730 nm circular polarized laser (~10 kW/cm²). (C) Luminescence time traces showing that UV irradiation induces emission intermittency and reduces the mean intensity. Imaging rate = 20 Hz. (D) Time evolution of the average of 79 CNTs before and during UV irradiation. i.u., intensity units.