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. 2021 Mar 3;8(9):2001274. doi: 10.1002/advs.202001274

Figure 9.

Figure 9

a) Schematic process for the solar‐to‐thermal conversion. b) SEM images of PET/PTA‐x CNTs coaxial fibers. Reproduced with permission.[ 72 ] Copyright 2019, American Chemical Society. c) Conceptual illustration of the cyclic, dramatic, and reversible electrical conductivity changes. Reproduced with permission.[ 73 ] Copyright 2015, American Chemical Society. d) The ball milling and chemical treatment processes. Reproduced with permission.[ 74 ] Copyright 2018, Elsevier. e) Infrared images of SA/CNTs sponge under the solar irradiation. Reproduced with permission.[ 75 ] Copyright 2018, Elsevier.