Fig. 4 | Scientific Reports

Fig. 4

From: Thermostable terahertz metasurface enabled by graphene assembly film for plasmon-induced transparency

Fig. 4

(a,b) Optical microscopy images of micro-nano Al at room temperature (a) and for 900 °C heat treatment (b). Scale bars:100 μm. (c,d) Optical microscopy images of GAF at room temperature (c) and for 900 °C heat treatment (d). Scale bars: 200 μm. (e–h) Low magnification top view SEM image (e) and high-resolution SEM image (f–h) of micro-nano Al for 900 °C heat treatment. Scale bars: 100 μm, 10 μm and 1 μm.

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