MudPad: tactile feedback and haptic texture overlay for touch surfaces

Authors:
Yvonne Jansen;Thorsten Karrer;Jan Borchers
Affiliations:
RWTH Aachen University;RWTH Aachen University;RWTH Aachen University
Venue:
ACM International Conference on Interactive Tabletops and Surfaces
Year:
2010

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Abstract

We introduce MudPad, a system capable of localized active haptic feedback on multitouch screens. We use an array of electromagnets combined with an overlay containing magnetorheological (MR) fluid to actuate a tablet-sized area. As MudPad has a very low reaction time it is able to produce instant multi-point feedback for multitouch input, ranging from static levels of surface softness to a broad set of dynamically changeable textures. Our system does not only convey global confirmative feedback on user input but allows the UI designer to enrich the entire interface with a tactile layer conveying local semantic information. This also allows users to explore the interface haptically.