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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: Macromol Biosci. 2017 Feb 16;17(6):10.1002/mabi.201600434. doi: 10.1002/mabi.201600434

Figure 1.

Figure 1

Schematic of thermo-responsive substrate preparation. (a) Flat and patterned PDMS substrates are prepared for subsequent grafting. (b) PDMS substrates are soaked in a 20% (w/v) benzophenone in acetone for 3 min and air dried for 60 min by exposing one side of the PDMS to benzophenone solution. (c) Benzophenone soaked PDMS substrates are then exposed to UV irradiation for 3 min while coated with a 20% aqueous solution of NIPAAm and then washed with acetone and ethanol. (d) PNIPAAm-PDMS substrates are then heated to 80 °C for 2 hours while coated with a 10% (v/v) solution of APTES in ethanol.