Figure 5
From: Gold-Nanocluster-Assisted Nanotransfer Printing Method for Metasurface Hologram Fabrication
XPS spectra showing that the composition (at%) for different etch times depends on the deposited materials and their thicknesses. (a) XPS spectra showing the composition (at%) of a polymer stamp with Au nanoclusters. (b) XPS spectra showing the composition (at%) of a polymer stamp with Au nanoclusters and intermediate SiO2 layer. (c) XPS spectra showing the composition (at%) of a polymer stamp with Au nanoclusters, intermediate SiO2 layer, and Au thin film (d) XPS spectra showing the composition (at%) of a polymer stamp with Au nanoclusters, intermediate SiO2 layer, Au thin film, and outermost SiO2 layer (insets show the binding energy of Au for the corresponding samples) (e) Normalized XPS spectrum of the Au binding energy at each interface. (The inset shows the interfaces between materials, while the TEM image shows various interfaces).
