Unique structure and mechanical property of Dabryanus scale

The structure and mechanical property of Dabryanus scale were investigated. Environmental Scanning Electron Microscopy (ESEM) and Transmission Electron Microscopy (TEM) were used to observe the scale structure. The scale has a discrete osseous layer which is composed of boat-like unit (due to the shape). The osseous layer is embedded into fibrillary layer, and the largest thickness ratio of osseous layer to fibrillary layer is about 7, much...