Digital images of cured pNIPAAm only (A), 50/50 APTES/pNIPAAm non-cured (B) and cured films (C), and 50/50 BTMS/pNIPAAm cured film (D) before and after dip-washing in ~ 23°C DI water. The pNIPAAm film was spin-coated on silicon wafer (1 cm × 1.2 cm) from 1.5 wt.% solution in ethanol, and the blend films were spin-coated from ~ 3 wt.%, instead of 1.5 wt.%, of total solute to show a better color contrast for imaging.