Figure 2 | Scientific Reports

Figure 2

From: Perfect meta-absorber by using pod-like nanostructures with ultra-broadband, omnidirectional, and polarization-independent characteristics

Figure 2

FESEM images of PMA. (a) FESEM image of pod-like nanostructures with an Au thin-film in 20 nm thickness at annealing temperature of 600 °C conditions, the insert image of (a) is the corresponding photography of full 4-inch PMA wafer. (b) FESEM zoom-in image of (a). (c) FESEM image of unit cell of pod-like nanostructures. (d) FESEM zoom-in image of yellow dash-square area in (c). The diameter of Au-NP is 115 nm and the thickness of SiO2 cladding layer is 20 nm. (e) The typical size distribution of nanocomposite particles embedded in the pod-like nanostructures. The average nanocomposite particle size is 114 nm.

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