Fig. 2: Mechanism and mechanical properties of UFPFs.
From: Scalable production of ultrafine polyaniline fibres for tactile organic electrochemical transistors
a SEM images of the PAni fibers produced in different solvating species. Specifically, the upper four panels show the fibers prepared from poor solvents, and the lower two panels show the fibers fabricated from good solvents. b Raman spectra of PAni fibers after placing in air for four weeks. c The diffusivity from PAni dispersions (in m-cresol) to various solvating species. d The viscosity of PAni gels formed in various solvating species. e Mechanics simulation results of extension behaviors of PAni gel fibers at different interfacial pressure. Comparing to the blue regions, the elements in blue regions are subject to larger stress. f Typical tensile stress-strain curves of UFPFs. g Ashby plot comparing the mechanical strength of UFPFs to previously reported CPFs. Scale bars in a: Water, Ethanol, EA, Acetone 20 µm (left) 10 µm (right); NMP 20 µm (left) 5 µm (right), DMF 20 µm (left) 2 µm (right).
