Transmittance spectra for (a&b) ITO nanofibers and (c&d) glass plate. Samples (a) and (c) were obtained in air in a dry state, while samples (b) and (d) were obtained in water. ITO nanofibers were deposited at 10 kV for 20 min (about 34 μm) and thermally treated at 1000 °C under nitrogen.