HIGH-PERFORMANCE ELECTROACTIVE POLYMER TRANSDUCERS
First Claim
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1. A transducer comprising:
- a frame structure defining an opening and at least two electroactive polymer layers extending within the opening of the frame, the electroactive polymer layers each having an elastic modulus below about 100 MPa and a central portion, wherein the electroactive polymer layers are stretched to join at each central portion of the electroactive polymer layers to each form a concave shape;
wherein the central portions of the electroactive polymer layers actuate in at least two component directions upon application of a voltage across the electroactive polymer material.
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Abstract
Transducers employing electroactive polymer films are disclosed.
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Citations
20 Claims
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1. A transducer comprising:
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a frame structure defining an opening and at least two electroactive polymer layers extending within the opening of the frame, the electroactive polymer layers each having an elastic modulus below about 100 MPa and a central portion, wherein the electroactive polymer layers are stretched to join at each central portion of the electroactive polymer layers to each form a concave shape; wherein the central portions of the electroactive polymer layers actuate in at least two component directions upon application of a voltage across the electroactive polymer material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A transducer comprising:
an open frame and at least two diaphragm layers, each diaphragm layer comprising an electroactive polymer material having an elastic modulus below about 100 MPa and extending within the frame, the electroactive polymer material being tuned for high frequency operations at or near about their natural resonance, wherein central portions of the diaphragm layers are coupled together and remaining portions of one diaphragm layer are spaced from remaining portions of the other diaphragm layer, and wherein the diaphragm layers are free to actuate in at least two component directions upon application of a voltage across the electroactive polymer material. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
Specification