Extended Data Fig. 6: Durability of polyurethane ionic gel fibre and EL units.
From: Large-area display textiles integrated with functional systems
a, Luminance variations when the transparent conductive weft is rolled around its central axis. L0 and L correspond to the electroluminescence intensity before and after deformation, respectively. b, c Variation of weight (b) and electrical resistance (c) for the polyurethane ionic gel fibre in open air at room temperature (~25 °C). Here w0 and w correspond to the weights before and after exposure to the air, respectively, and R0 and R correspond to the electrical resistances before and after exposure to the air, respectively. d, Electroluminescence performance of EL units stored in open air. L0 and L correspond to the electroluminescence intensity before and after exposure to the air, respectively. e, Photograph of the standard washing machine used in the washing test. Scale bar, 20 cm. f, Photographs of the washing container before and after washing. Scale bars, 5 cm. g, Photographs (top) and emission images (bottom) show that the luminescence of EL units after 100 cycles of washing (30 min per cycle) is similar to the original unwashed fabric. Scale bars, 1 mm. h, Quantitative measurement of the luminance of EL units. Little change is seen over 100 cycles of washing and drying. L0 and L correspond to the electroluminescence intensities before and after washing, respectively. Error bars are standard deviations of the results from at least three samples.
