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Haptic devices allow a more sopisticated interaction with virtual (computer graphics) objects than simply clicking on them with a mouse pointer.  For example, they can help the user feel the surface texture or compliance of a virtual object (such as touching a virtual bowling ball versus a sponge ball).

HapticDentalRobot2

We developed various types of MR-brakes and built haptic interfaces with them.  Please click the links on the left to explore some of our research in this area.