=The skin of sharks is covered by thousands and thousands of small scales, or denticles, which vary in shape and size around the body — these likely are what help to increase lift and decrease drag when the shark travels through fluid. For inspiration, the researchers turned to the shortfin mako, the fastest shark in the world. The mako’s denticles have three raised ridges, like a trident. Using micro-CT scanning, the team imaged and modeled the denticles in three dimensions. Next, they 3-D printed the shapes on the surface of a wing with a curved aerodynamic cross-section, known as an airfoil. This allowed the researchers to test these synthetic structures on airfoils as a way of measuring their effect on lift and drag for applications in the design of various aerial devices such as drones, airplanes, and wind turbines.”
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