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. 2009 Mar 20;106(14):5639–5644. doi: 10.1073/pnas.0900323106

Fig. 2.

Fig. 2.

Fabrication of slanted nanohairs with UV-curable PUA resin. (A) Schematic illustration of the fabrication of slanted polymer nanohairs by replica molding with UV-curable PUA resin. (B) A titled SEM image of angled, PUA nanohairs. The hairs are 3 μm in height with bottom, neck, and top diameter of 700, 350, and 600 nm, respectively. (C and D) Magnified, titled images of B, showing well-defined PUA nanohairs with bulged flat top and slanted angle of 60° with respect to the horizontal plane. (E and F) A planar SEM image of the hairs (E) and its magnified image (F), showing clear spatulae-like flat head. (G) A photograph showing large-area fabrication of slanted PUA nanohairs on 50-μm PET film substrate (area = 5 × 5 cm2).