Figure 7
From: Gold-Nanocluster-Assisted Nanotransfer Printing Method for Metasurface Hologram Fabrication
Cross-sectional FIB images of the polymer stamp and glass substrate after the nanotransfer process with (a) 10-nm-thick Au, intermediate SiO2 layer, Au thin film and outermost SiO2 layer, (b) 15-nm-thick Au, intermediate SiO2 layer, Au thin film, and outermost SiO2 layer, and (c) 20-nm-thick Au, intermediate SiO2 layer, Au thin film, and outermost SiO2 layer deposited on the polymer stamp. (All scale bars represent 200 nm). (d) Summary of results obtained after the nanotransfer process for different thicknesses of Au layers on a polymer stamp. The illustrations in the graph show the layers of materials transferred onto the adhesive-coated glass substrate in various cases. Red dotted circle indicates optimized conditions for NCNP.
