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. 2019 Nov 27;19(23):5196. doi: 10.3390/s19235196

Figure 1.

Figure 1

Fabrication of a microfiber [29,30,32]. (a) Flame blushing technique for fabrication of a silica-based microfiber [29,30]. Copyright 2016, IEEE; (b) direct drawing process for fabrication of a polymer-based micro/nanofiber (polytrimethylene terephthalate, PTT) [31].