Figure 8
Scheme for the production of a reflective coating; Schematic diagram of a single-pass method (a) for deposition a layer of titania as a base layer as was described before. Formation of a double layer heterostructure (b) by application of alumina on top of titania layer and creating transparent structure (c) but already colored in reflectance from single titania layer (d) on (small SCAMT writing) and improved visibility of colors by application of AlOOH layer (e) on top (SCAMT writing). Even on microlevel clear structure can be produced by single drops and on the maximum resolution of the desktop printer (f) as a perfectly clearly seen on SEM image of droplets deposited on the slide in the form of a writing. Produced structure reflect color image (g) on the slide but transparent on transmission, allowing for automatic reading in reflection or projection of microimages in reflection printed writing from the slide (h) or in big image reflected from the polymer substrate (A4 format).
