| 摘要 |
The subject invention provides composite articles ( 20, 120 ) and associated systems ( 32, 132 ). A first composite article ( 20 ) includes a piezoelectric layer ( 22 ) having a piezoelectric property. The piezoelectric layer ( 22 ) is sandwiched between a first conductive layer ( 28 ) and a second conductive layer ( 30 ). At least one of the conductive layers ( 28, 30 ) is a conductive polymer having an electrically conductive property. A second composite article ( 120 ) includes first and second piezoelectric layers ( 122, 124 ) having a piezoelectric property. The first and second piezoelectric layers sandwich an insulating layer ( 126 ). A first system ( 32 ) and a second system ( 132 ) each include a control device ( 34 ) electrically connected to the first composite article ( 20 ) or the second composite article ( 120 ), respectively. The control device ( 34 ) measures an electrical signal generated by the respective piezoelectric layers ( 22, 122, 124 ) and/or produces an electrical signal to actuate the respective piezoelectric layers ( 22, 122, 124 ).
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