Figure 1
SEM micrographs of (a) an untreated mature male damselfly and (b) a dewaxed mature male damselfly wing with removed epicuticle (scale bar 4 µm). (c) Average IR spectra of untreated and dewaxed wing surfaces. Their corresponding transmission IR maps observed for (d) an untreated mature male damselfly wing, showing its natural surface nanostructures, and (e) a dewaxed mature male damselfly wing with substantially smoother morphology, indicating the loss of surface nanostructures, respectively (x and y axis units are given in µm). Note that the transmission IR maps were obtained based on integrated band areas (amide I) in the range 1680–1610 cm−1 and were set to display the same scale in order to obtain a fair comparison. |