Figure 1
From: Study of laser actions by bird’s feathers with photonic crystals
Turquoise-Fronted Amazon feather for random lasing. (a) The photo of a Turquoise-Fronted Amazon feather. (b)–(d) The images of yellow-green S0, dark-green S1, and red S2 feathers were zoomed in from circles b,c, and d in (a). (e)–(g) The cross-section views of (b)–(d). (i) The SEM image of (e), from I to III are the outer cortex, photonic crystals, and porous cells. The black arrow indicates the pigment. (j) The SEM image of photonic crystals. (k) Schematic illustration of the random laser sandwiched by two plastic layers. The scale bars are 100 μm in (b)–(g), 1 μm in (i), and 100 nm in (j).
