Fig. 4: Design of a biomimetic adhesive device inspired by the mechanism of fly footpad formation. | Communications Biology

Fig. 4: Design of a biomimetic adhesive device inspired by the mechanism of fly footpad formation.

From: Framework with cytoskeletal actin filaments forming insect footpad hairs inspires biomimetic adhesive device design

Fig. 4

a Schematic diagrams for the formation of the footpad hair in flies. In the first step, at the tip of a hair, a framework for the spatulate structure is created by actin filaments. In the second step, the deposition of cuticle occurs on the framework. b Schematic diagrams for the formation of a biomimetic hair-like structure (fiber-framed adhesive structure). Step 1: a framework is created with nylon fibers. Step 2: the framework is immersed in resin and self-assembles into a spatula-shaped structure. c Biomimetic fibers are seen to frame the adhesive structures. Scale bar: 500 µm. d A fiber is attached to the glass substrate with liquids (arrow). Scale bar: 500 µm. e A 52.8-g silicon board (diameter = 8 inch) is suspended by a single biomimetic fiber. Arrow indicates the attachment site. f The attachment site of the adhesive fiber (arrow). The boxed region in (e) is enlarged.

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