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. Author manuscript; available in PMC: 2022 Jun 14.
Published in final edited form as: ACS Biomater Sci Eng. 2021 Mar 10;7(6):2430–2443. doi: 10.1021/acsbiomaterials.0c01803

Table 1.

Physical and Mechanical Characterization of Culture Substrates

substrate fiber diameter (μm) Str (ratio)a stiffness (kPa)
TCP 0.543 ± 0.075 3.8 × 106 ± 0.9 × 106
gelatin thin coating on TCP 0.651 ± 0.026 2.4 × 106 ± 0.8 × 106
collagen gel 0.551 ± 0.0096 0.00754 ± 0.0015
RCF 0.35 ± 0.17 0.496 ± 0.006 13.2 ± 2.4
ACF 0.33 ± 0.13 0.201 ± 0.079 14.3 ± 3.5
R-PCL 1.001 ± 0.261 0.291 ± 0.063 15.9 ± 3.5
A-PCL 1.05 ± 0.153 0.06 ± 0.0051 15.8 ± 1.2
a

Str values represent a texture aspect ratio. Values have an inverse correlation with the uniformity of the surface texture. Data represent the means of three to six independent batches of substrates with n = 3–10 ± SE. Substrates: Tissue culture plastic (TCP), random collagen fibrils (RCF), aligned collagen fibrils (ACF), random polycaprolactone fibers (R-PCL), and aligned polycaprolactone fibers (A-PCL).