Figure 3
From: Lotus leaf inspired robust superhydrophobic coating from strawberry-like Janus particles

Scanning electron microscopy images of representative Janus particles: (a) Janus particles synthesized using tetraethyl orthosilicate and aminopropyltrimethoxysilane at 2.0 g of Tween-80; (b) Janus composite particles after grafting PS onto the coarse side(the inset displays the illustrative structure); (c) Janus composite particle after modification of the flat side with trietyoxy-3-(2-imidazolin-1-yl) propylsilane (the inset displays the illustrative structure); and (d) Janus particles after being labeled with the trisodium citrate-capped Au nanoparticles on the modified flat side. PS, polystyrene.