Fig. 8. (a) PBG features of E7-refilling template samples with various cell gaps of 12, 30, 50,100, and 125 μm. (b) The orange, yellow-green, and green reflection patterns of the E7-refilling template samples with cell gaps of 30, 50, 100 μm, respectively, under a reflectionmode polarizing optical microscope with crossed polarizers.