Fig. 1. Atom models of Ag nanoparticle on SiO₂ substrate. (a) Ag nanoparticle; (b) SiO₂ substrate; (c) assembly of Ag nanoparticle on SiO₂ substrate

Fig. 2. Snapshots for atomic melting configuration of single laser-irradiated Ag nanoparticle at different temperatures.(a) 400 K; (b) 600 K; (c) 800 K; (d) 1000 K; (e) 1200 K; (f) 1500 K

Fig. 3. Contact parameters and adhesion energies between Ag nanoparticle and SiO₂ substrate at different temperatures. (a) Contact length and contact angle; (b) adhesion energy

Fig. 4. Snapshots for atomic melting configuration of two Ag nanoparticles under different laser heating time. (a) 0;(b) 0.6 ps; (c) 2 ps; (d) 4 ps; (e) 6 ps; (f) 8 ps; (g) 10 ps; (h) 12 ps; (i) 18 ps; (j) 30 ps; (k) 34 ps; (l) 40 ps

Fig. 5. Non-bond energy of two Ag nanoparticles during laser heating

Fig. 6. Snapshots for atomic melting configuration of two laser-irradiated Ag nanoparticles at different temperatures. (a) 400 K; (b) 600 K; (c) 800 K; (d) 1000 K; (e) 1200 K; (f) 1500 K

Fig. 7. Adhesion energies between two Ag nanoparticles and SiO₂ substrate at different temperatures