Figure 5: High-density information encryption storage.
From: Scalable, full-colour and controllable chromotropic plasmonic printing
(a) A colourful 500-μm-radius badge of Sun Yat-sen University printed on a CTPM–PBA panel. (b) The same badge after spin coated with a layer of PMMA. The displayed colours came into another colour domain (green), and the difference between the pattern and the background became blurry. (c) Clear pattern of the badge after the PMMA layer was removed. Scale bar, 100 μm.
