Fig. 1. Structure of the nonlocal perfect absorption metal nanofilm

Fig. 2. Real part of dielectric constant of nonlocal gold thin film with continuous change of k

Fig. 3. Imaginary part of dielectric constant of nonlocal gold thin film with continuous change of k

Fig. 4. Real part of the equivalent electric constant of the gold thin film with a thickness of 10 nm

Fig. 5. Imaginary part of the equivalent dielectric constant of the gold thin film with a thickness of 10 nm

Fig. 6. Absorptivity of gold thin films calculated by different methods

Fig. 7. Photonic band gap of periodic structures

Fig. 8. Influence of silicon film thickness on absorptivity when no metal layer is introduced

Fig. 9. Absorptivity of nonlocal and local metal nanofilms

Fig. 10. Structure of the nonlocal gold nanoparticle absorption thin film

Fig. 11. Absorptivity of the nanoparticle film

Fig. 12. Equivalent dielectric constant of two-dimensional nonlocal periodic gold sphere

Fig. 13. Reflection and absorption of two-dimensional nonlocal periodic gold sphere and reflection coefficient of Bragg mirror