Compliant electroactive polymer transducers for sonic applications
First Claim
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1. A sonic device comprising:
- an electroactive polymer transducer including a portion of an electroactive polymer and a first electrode in contact with the portion and a second electrode in contact with the portion, wherein the electroactive polymer transducer is arranged in a manner which causes the portion to deflect in response to a change in electric field that is applied via at least one of the first electrode and the second electrode,and wherein the electroactive polymer has an elastic modulus less than about 100 MPa;
and a circuit in electrical communication with the first electrode and the second electrode and configured to provide an actuation signal to the at least one of the first electrode and second electrode, wherein the actuation signal causes the electroactive polymer transducer to deflect at a frequency less than about 50 kHz.
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Abstract
Described herein are compliant electroactive polymer transducers for use in acoustic applications. A compliant electroactive polymer transducer includes a compliant electroactive polymer at least two electrodes. For sound production, circuitry in electrical communication with the transducer electrodes is configured to apply a driving signal that causes the electroactive polymer to deflect in the acoustic range.
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Citations
6 Claims
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1. A sonic device comprising:
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an electroactive polymer transducer including a portion of an electroactive polymer and a first electrode in contact with the portion and a second electrode in contact with the portion, wherein the electroactive polymer transducer is arranged in a manner which causes the portion to deflect in response to a change in electric field that is applied via at least one of the first electrode and the second electrode, and wherein the electroactive polymer has an elastic modulus less than about 100 MPa; and a circuit in electrical communication with the first electrode and the second electrode and configured to provide an actuation signal to the at least one of the first electrode and second electrode, wherein the actuation signal causes the electroactive polymer transducer to deflect at a frequency less than about 50 kHz. - View Dependent Claims (2, 3, 4, 5)
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6. A sonic device comprising:
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an electroactive polymer transducer including a portion of an electroactive polymer and a first electrode in contact with the portion and a second electrode in contact with the portion, wherein the electroactive polymer transducer is arranged in a manner which causes the portion to deflect in response to a change in electric field that is applied via at least one of the first electrode and the second electrode, and wherein the electroactive polymer has an elastic modulus less than about 100 MPa; and a circuit in electrical communication with the first electrode and the second electrode and configured to provide an actuation signal to the at least one of the first electrode and second electrode, wherein the actuation signal causes the electroactive polymer transducer to deflect at a frequency less than about 50 kHz, and wherein a portion of the electroactive polymer is capable of a planar strain of greater than 25% between a first position of the portion with a first area and a second position of the portion with a second area.
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Specification