Figure 4. SEM images of the peel test on dip-coated nanoparticle films before (A) and after a sintering process (B); white boxes indicate the areas
after peel tests, while red-dot ellipsoids show the area where scotch tape adhesives remained on the substrate after the test. (C) Titled SEM image
of the nanoparticles after sintering, and (D) averaged height profiles of the nanoparticles before and after sintering (as measured by AFM).