Therefore, the reported results enrich the description of confinement and substrate interaction effects on the cold crystallization process taking place in PET ultrathin films.
From this data, we conclude that cell confinement and substrate rigidity, but not Fn density or anchorage, controls actin polymerization and that the decision of a fibroblast to assemble an actin cytoskeleton is an all or none response, with some cells not responding to dimensionality at these intermediate well heights (Fig. 2D, E).
These factors include geometric confinement, cell-substrate interactions and cell-cell contacts.
Enantiomeric separation in these materials strongly relates to modifier choices and the interplay with the nanopore confinement and substrate-modifier interactions.
Due to the effect of substrate confinement, unexpected homogeneous plastic flow occurred in the film simultaneously with cracking or shear banding, which co-contributed to the plastic deformation.
The variances in nanoscale and microscale structures are due to the adaption of stimuli-responsive polymer materials to surrounding environments under the confinement of the patterned substrate.
Notably, findings in various culture cell lines suggest that high spatial confinement combined with low substrate adhesion is sufficient to trigger an amoeboid cell transformation strikingly similar to stable-bleb cells (see Liu et al., 2015).
Our findings yield a new design concept of cell repelling and trapping surfaces which are applicable to cell guiding methods and single or multiple cell confinement on cell culture substrates, and thus may contribute to development of more advanced biomaterials.
Both soft substrates and confinement of cell adhesion to small patterns in 2-D systems inhibit the formation of a filamentous actin network in many cell types [12], [34].
We found that stable-bleb cells plated on Fibronectin-coated substrates under confinement displayed exceptionally fast and directional movements with average cell speed < v cell > = 17.1 ± 0.6 μm/min (n = 67 cells) and persistence length of approximately four cell diameters, best described by a persistent random walk model over long timescales.
