Category Archives: friction

walefin for optimized turbines

walefin submarineThe humpback whale has pronounced bumps or tubercles along the leading edge of its pectoral flippers (above left). A idealized model of the flipper (above upper right), which was tested in a wind tunnel, demonstrated that the tubercles enhanced hydrodynamic performance…

Technical application:

airblade, turbine, windmill

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Gecko feet for car tires

geckoUsing design principles inspired by the nanoscopic hairs on the gecko, UC Berkeley researchers and colleagues have created a novel microfiber array which has very high friction but is not “sticky”.



Technical application:

car tires, drive on solar panels


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