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. 2019 Jun 13;20(7):2657–2665. doi: 10.1021/acs.biomac.9b00432

Figure 4.

Figure 4

(a) Effect of substrate affinity between the highly adhesive PEI-coated surface and the lower affinity mica surface on adsorption induced spreading of CNFs depicted schematically. (b) Correlation between width and height for CNFs measured on PEI-coated mica or bare mica, highlighting a less oblate cross-sectional area for CNF supported on bare mica. The linear fits in (b) are given by “width = 36.1 + 2.9 × height” for bare mica and “width = 45.3 + 5.7 × height” for PEI-coated mica.