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Electrospun nanofibers PPy/PEO. (Top) (a,b) SEM images of the electrospun fibers over the core of the 600 µm optical fiber. (Bottom) Sensitivity of PPy/PEO coated optical fiber against ammonia, triethylamine, ethanol, methanol, and acetone vapors at different concentrations. Reprinted with permission from Ref. [109].
