Corks and synthetic plugs
The sample observed has been removed from the internal of cork in transversal direction. Structure reminds of honeycomb cells. Their average size is 32µm.
Comparison with synthetic plugs:
In both cases, we notice that cells are closed. Beige plug has been too damaged during its preparation, we cannot exploit the picture. Red plug is also damaged but it seems that its cells form tubes.
We notice that in different directions layout of cells are different. We can conclude that these three kinds of plugs have anisotropic structures.
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