Figure 6
From: Color-specific porosity in double pigmented natural 3d-nanoarchitectures of blue crab shell
(A) Representative SEM images collected from blue cuticle, highlighting the channels and the regular arrays of nano-pillars separated by pores in the ultrastructured channel walls. Schematic representation of the pores and channels arrangement is displayed in the top right corner. The channel width of about 450 nm is comparable with the blue light wavelength. (B) Comparative SEM images from the four coloured shell, blue, green, white and red, showing nanoscale details of color-characteristic pores. (C) The averaged distances between pores and canals and their diameter for the white, blue, green and red cuticle, as indicated on each graph. Error bars show the standard deviation; statistical difference for values of p ≤ 0.05 were considered significant (and represented by*), p ≤ 0.01 very significant (and represented by**), p ≤ 0.001 extremely significant (and represented by***).
