Figure 2 | Scientific Reports

Figure 2

From: Measuring the Poisson’s Ratio of Fibronectin Using Engineered Nanofibers

Figure 2

Measuring the dynamic changes in FN nanofiber length during the release process. (a) Time lapse sequences of FN nanofibers released in DI water, DOC, and SDS. The times are relative to the initiation of the release from PIPAAm. (b) The contour length of FN nanofibers released in DI water. The contour length as a function of time after release (green dashed line) was fit to a double exponential curve (r2 = 0.99) with a rapid contraction regime of τ1 = 2.88 sec and a slower contraction regime of τ2  = 157.41 sec. (c) Monodisperse nanofibers 50.12 ± 0.41 μm in length pre-release contracted to a final length of 14.15 ± 0.92 μm, a 3.5-fold decrease in length from the pre-release state Scale bars in (a) are 20 μm. Error bars in (b) and (c) are standard deviation and the symbol ‘#’ indicates a statistically significant difference with P < 0.05.