fig3
Figure 3. Characterizations of the DCLS sensor. (A) Absorbance as a function of bending angles for the red and blue layers; (B) Absorbance hysteresis of the red layer in different bending cycles; (C) Absorbance tests for 1,000 dual-direction bending cycles; (D) Angle sensing resolution of the DCLS sensor under three different step levels; (E) Bending angles under different bending curvatures. DCLS: Dual-colored layer structured.