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US 2025/0028394 A1Published application
System and method for an interaction surface with shape-changing tactile elements
AssigneeCarnegie Mellon University
InventorsCraig D. Shultz, Christopher Harrison
Life of this patent
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Abstract
A tactile interaction device uses a plurality of shape-changing tactile elements that are driven by electro-osmotic flow of a fluid. An electric filed applied to a pumping membrane by two electrodes is responsible for inducing a flow of the liquid. Multiple tactile elements can be used on the device to permit localized tactile feedback to a user. The device is adapted to be in contact with the user's skin, such as a finger or hand.
Claims18
A tactile interaction device comprising:
- a first electrode in fluid communication with a first chamber;
- a second electrode in fluid communication with a second chamber;
- a pumping membrane disposed between the first electrode and the second electrode,
- wherein the pumping membrane comprises a plurality of passages to permit fluid flow between the first chamber and the second chamber;
- a pumping liquid;
- an electrical source connected to the first electrode and the second electrode,
- wherein the electrical source imparts an electric field across the pumping membrane.
4 more elements
Dependencies are inferred from the claim text.