Computer simulations suggest new applications in industry by harnessing active microscopic particles in fluids. Previous research has already demonstrated that substantial quantities of self-motile or active agents such as bacteria in a fluid environment can be harnessed to do mechanical work like moving microscopic gears and ratchets. Bacteria as well as algae can also be used to transport or displace matter in fluidic environments.

Source: Harnessing bacteria to move microscopic gears and ratchets