Fig. 1. (a) Preparation process of silver nanoparticles; (b) SEM image of prepared silver nanoparticles

Fig. 2. Experimental setup of femtosecond laser tweezer direct writing system

Fig. 3. (a) SEM images of processed silver wires; (b) high-resolution SEM image of silver wire fabricated when laser power is 0.74 mW; (c) silver wire width versus incident laser power

Fig. 4. (a) Schematic of resistance measurement of silver wires; (b) SEM image and (c) three-dimensional AFM image of silver wire to be measured; (d) voltage-current curve of silver wire

Fig. 5. Silver grid microstructure. (a) SEM image; (b) high-resolution SEM image