Fig. 1From: Numerical Study of an Efficient Solar Absorber Consisting of Metal Nanoparticles a Basic structure of metal nanoparticle-dielectric absorber (NPA). All of the dielectric layers have a thickness of hh (100 nm). The diameter dd of metal nanoparticles is 20 nm. b One unit cell of the single-MD-layer NPA structure. Period P = dd = 20 nmBack to article page