Fig. 1
From: Crystalline polymer nanofibers with ultra-high strength and thermal conductivity

Fabrication of a PE nanofiber (PENF). a Idealized schematics of localized drawing with a microheater to fabricate PENF from a PE microfiber (PEMF). Arrows indicate drawing directions whereas red lines highlight the defects in PEMF. b-c Optical micrograph before and after localized drawing (in c, nanofiber not resolved optically). Scale bars, 20 µm