504 results about "Dielectric elastomers" patented technology

The system of the present invention includes an actuator having at least two electrodes, an elastomeric dielectric film disposed between the two electrodes, and a frame attached to the elastomeric dielectric film. The frame provides a linear actuation force characteristic over a displacement range. The displacement range is preferably the stroke of the actuator. The displacement range can be about 5 mm and greater. Further, the frame can include a plurality of configurations, for example, at least a rigid members coupled to a flexible member wherein the frame provides an elastic restoring force. In preferred embodiments, the rigid member can be, but is not limited to, curved beams, parallel beams, rods and plates.

In a preferred embodiment the actuator can further include a passive element disposed between two flexible members such as, for example, links to tune a stiffness characteristic of the actuator. The passive element can be a bi-stable element. Further, the actuator can include a plurality of layers of the elastomeric dielectric film integrated into the frame. The elastomeric film can be made of different materials such as, for example, acrylic, silicone and latex.

Dielectric elastomer material and a preparation process thereof relate to the dielectric elastomer material and the preparation process thereof, which solves the problems existing in the current dielectric elastomer material of low dielectric constant, low deformation, voltage which is exerted to deform close to the disruptive voltage of material. The dielectric elsastomer material is prepared by plasticizer, catalyst and virgin rubber of silicon rubber in silicon resin BJB TC 5005 and relaxation-type ferro-electricity ceramic material. The preparation process comprises firstly agitating raw materials under constant temperature except relaxation-type ferro-electricity ceramic material, then adding relaxation-type ferro-electricity ceramic material to agitate under constant temperature again, and conducting solidification treatment for prepared substances after poured into patternmaking dies. The dielectric elastomer material of the invention has high dielectric constant, large deformation, and voltage for deformation is far lower than the disruptive voltage of the dielectric elastomer material of the invention. The preparation process of the invention is simple, and is easy to be operated, and technique is easy to control.

A power generation device includes: a composite layer formed by a dielectric elastomer with ferroelectric particles dispersed therein; and a pair of electrodes disposed on opposite sides of the composite layer, the pair of electrodes being stretchable and compressible along with stretch and compression of the composite layer. The ferroelectric particles have crystal orientability and are orientationally dispersed in the dielectric elastomer, and are polarized in the layer thickness direction of the composite layer.