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Effect of the dosage frequency on the surface microtexture. HU films (MW = 330 kDa) were textured using 3 × 200 μL of water followed by 10 × 200 μL of nBT/IPA in the ratio 3:7, at variable dosing times: (A) 2.5 s, (B) 5 s, and (C) 10 s. All modification steps were carried out at rotation speed 2100 rpm. Data from AFM heights profiles.
