Research / 2021 / Article / Fig 4

Review Article

Biopolymer Nanofibers for Nanogenerator Development

Figure 4

Fabrication of biopolymer nanofibers by electrospinning. SEM images of (a) electrospun cellulose nanofibers (ES-CNFs), (b) electrospun chitin nanofibers (ES-ChNFs), (c) electrospun chitosan nanofibers (ES-CtsNFs), (d) electrospun silk nanofibers (ES-SNFs), (e) electrospun collagen nanofibers (ES-CoNFs), (f) electrospun gelatin nanofibers (ES-GeNFs), (g) ES-SNF/gold nanoparticle composite fibers, (h) carbon nanotube yarn/ES-SNF core-sheath composite fibers, and (i) aligned ES-SNFs. (a) is reproduced with permission from Ref. [115], copyright 2020 ACS Nano. (b) is reproduced with permission from Ref. [116], copyright 2004 Polymer. (c) is reproduced with permission from Ref. [117], copyright 2007 Biomacromolecules. (d) is reproduced with permission from Ref. [118], copyright 2016 Nano Research. (e) is reproduced with permission from Ref. [119], copyright 2004 Frontiers in Bioscience-Landmark. (f) is reproduced with permission from Ref. [120], copyright 2013 Advanced Functional Materials. (g) is reproduced with permission from Ref. [166], copyright 2012 Nano Letters. (h) is reproduced with permission from Ref. [167], copyright 2018 Nano Letters. (i) is reproduced with permission from Ref. [168], copyright 2011 Advanced Functional Materials.