Figure 3: Static contact angle measurement versus temperature after first use (A) and after several uses (B) of the PNIPAM-grafted chips for cell detachment. For each curve, 3 substrates were used, and 9 measurements were performed on each substrate in different locations for any given temperature. Thermal behavior of PNIPAM-grafted (green) and bare glass slides (Ctrl, blue). LCST: Lower critical solution temperature.