Fig. 7. (Top row) (left) Conductive patterns of AgNW lines at different concentrations (10 mg mL⁻¹, 20 mg mL⁻¹, 30 mg mL⁻¹, 40 mg mL⁻¹, and 50 mg mL⁻¹ from top to bottom) and (middle and right) logos of CSIR and NITC printed on an A4 sheet of printing paper; (bottom row) verification of conducting tracks for lighting of LEDs and the effect of the distance between the contact points on the intensity.