LIGHT POWERED MICROACTUATOR, MICROFLUIDIC DISPENSER AND RETINAL PROSTHESIS

摘要

A light powered microactuator device of the invention is an integrated device including a solar cell that provides sufficient energy to actuate an electroactive thin film coupled to a thin membrane. The lateral strain response of the electroactive thin film causes the thin membrane to move, providing an actuation force that can be applied in a wide variety of microactuator devices. A preferred embodiment light powered microactuator device of the invention includes a substrate that defines a flexible membrane in a portion thereof. An electroactive thin film is coupled to the flexible membrane such that lateral strain in the electroactive membrane causes flexing of the membrane. An integrated solar cell converts light to voltage that is applied to the electroactive thin film by an integrated electrode. A preferred embodiment device is a retinal prosthesis including one or and array of light powered microactuator devices of the invention configured to dispense a neurotransmitter chemical fluid in response to light received at the human retina.