| 摘要 |
A user interface system ( 102 ) for a portable electronic device ( 100 ) is disclosed. The user interface system includes an interface ( 202 ) that is made of a flexible material and has an active position and an inactive position. The interface is coupled with a reservoir ( 204 ). The reservoir is used for storing electrorheological fluid ( 206 ). The user interface system also includes a source ( 208 ) that is coupled to the reservoir. The source is used for applying an electric field to the electrorheological fluid when the interface is in the active position.
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