A mechatronic shape display based on auxetic materials

A mechatronic shape display based on auxetic materials

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Microsoft Research
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Published on ● Video Link: https://www.youtube.com/watch?v=3oRe6TTEG-8


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Shape displays enable people to touch simulated surfaces. A common architecture of such devices uses a mechatronic pin-matrix. Besides their complexity and high cost, these matrix displays suffer from sharp edges due to the discreet representation which reduces their ability to render a large continuous surface when sliding the hand. We propose using an engineered auxetic material actuated by a smaller number of motors. The material bends in multiple directions, feeling smooth and rigid to touch. A prototype implementation uses nine actuators on a 220 mm square section of material. It can display a range of surface curvatures under the palm of a user without aliased edges. In this work we use an auxetic skeleton to provide rigidity on a soft material and demonstrate the potential of this class of surface through user experiments.

Read the full paper: https://doi.org/10.1038/s41467-021-24974-0
Steed, A., Ofek, E., Sinclair, M., Gonzalez-Franco, M. A mechatronic shape display based on auxetic materials. Nat Commun 12, 4758 (2021).



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