Fig. 3: The basic properties of various films under dynamic stretching.
a Photographs of a SPC film F2-1 being mechanically stretched. b The initial SPC film F2-1 corresponding wide-angle X-ray diffraction (WAXD) patterns of polydomain structure, and the 100% strained film corresponding WAXD patterns of monodomain structure. c Transmittance spectra of the initial F2-1 at various strains (from 0% to 100%) with no polarizer. d The relationship between different tensile lengths, thickness, and UCPL intensity of film F3-1. The original length of the above test films is 20 mm, and each stretch is 2 mm, a bar chart column represents a single measurement, λex = 639 nm, λem = 515 nm. e Schematic diagram of tensile changes of thin films with and without PBG.
