High energy density electro-osmotic pump and actuator

Details High energy density electro-osmotic pump and actuator High energy density electro-osmotic pump and actuator

2007-10-05

2011-12-13

Dougherty, Thomas (Department: 2837)

Electrical generator or motor structure

Non-dynamoelectric

C417S048000

Reexamination Certificate

active

08076820

ABSTRACT:
An electro-osmotic pump includes a pump chamber having a wall fabricated of an electric double layer material, the surface area of the electric double layer material being high relative to the volume of the chamber. An electric potential applied across the material causes a fluid in the chamber to be transported through the wall.A nastic actuator includes the electro-osmotic pump and an actuator chamber, having a variable volume, coupled to the pump chamber. A superabsorbent polymer is disposed in the pump and actuator chambers, such that transport of the fluid into the pump chamber results in absorption of the fluid by the superabsorbent polymer, causing the actuator chamber to increase in volume. When the electric potential is applied across the superabsorbent polymer, the superabsorbent polymer expands, further causing the actuator chamber to increase in volume.

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