複雜系統之簡介(梁鈞泰) - 中研院物理研究所- Academia Sinica

Looking closely
•SEM scans reveal fine structures of leg:
oriented setae (needle-shaped hair) of diameter hundreds nm to 3 µm,
length 50µm, at angle 20 from axis
•Moreover, there are elaborate nanoscale grooves on a seta
20 µm
Trapping of air by setae and nanogrooves provides cushion for the leg from
getting wet, and enables the insect to float.
200 nm