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Effect of the HU film swelling on micro-texturing. The film forming HU with MW = 330 kDa was compared after surface pretreatment with water: (A) 0 μL, (B) 2×, and (C) 4 × 200 μL and surface structuring with 25 × 200 μL of a 3:7 mixture of nBT and IPA, dosing sequence 5 s. All modification steps were carried out at rotation speed 2100 rpm. Data from AFM heights signals.
