Advances in ferrofluid technology

Traditional ferrofluid products such as multistage rotary seals, exclusion seals, inertia dampers and loudspeakers are now a well established industry. Additionally, in the last few years a number of new applications have emerged such as ferrofluid steppers, gauges and sensors. The purpose of this paper is to review recent advances in ferrofluid technology both in the conventional and in new market areas.