sharklets

Sharklets are a type of biomimetic surface texture inspired by the skin of sharks. Shark skin is not smooth; it is covered in tiny, tooth-like scales called dermal denticles. These denticles have a specific shape and arrangement that reduces drag and inhibits the growth of microorganisms. Sharklets are engineered surfaces designed to replicate these properties.

The primary application of Sharklets is in reducing drag on submerged surfaces, such as the hulls of ships, submarines, and even aircraft. By mimicking the micro-texture of shark skin, these surfaces can reduce the frictional resistance of water or air flowing over them. This reduction in drag can lead to significant improvements in fuel efficiency and speed for vessels.

Another important aspect of Sharklets is their ability to prevent biofouling. Biofouling is the accumulation of marine organisms like algae, barnacles, and bacteria on submerged surfaces. This accumulation increases drag and weight, further reducing efficiency. The unique topography of Sharklets disrupts the settlement and growth of these organisms, acting as a passive, non-toxic anti-fouling solution. This contrasts with traditional anti-fouling paints that often contain biocides harmful to the environment.

Research into Sharklets has explored various materials and fabrication methods to create these microscopic patterns. While the concept has shown promise in laboratory settings and some real-world applications, widespread implementation is still ongoing. The complexity of replicating natural structures at a microscopic level and the cost of production are factors influencing their adoption. However, the potential for environmental benefits and operational efficiencies continues to drive development in this area.