Figure 2
The key characteristics of the inks and the resulting coatings of titania (A) and alumina (B). 1) SEM images of the surface coatings with 2) STEM of the nanoparticles shown as inserts; 3) HRTEM images of the nanoparticles in the as-synthesized inks; 4) UV-Vis transmission spectra of the thin films on a glass slide together with the respective photograph shown as an insert; 5) the particle size distribution characteristics of the sol ink as revealed by the dynamic light scattering measurements; 6) nitrogen adsorption-desorption isotherms and the respective DA pore size distributions (inserts) of the xerogel formed by the inkjet printing. Panel (C) presents the results of the SEM cross-section analysis of the deposited inorganic layers on a glass substrate (1) and the respective EDX mapping (2) with the refractive indices shown for the alumina and titania layers as well as for the glass substrate.
