Ferrogel-Based Microactuator Arrays for Small-Area Displays

The feasibility of developing small area display and actuator devices based on ferro fluids will be investigated. Ferrofluids offer a more robust means for coupling electrical inputs to mechanical motion when compared to delicate electrostatically operated microdevices. Recent developments in colloidal ferric particle fabrication have made possible the formulation of transparent ferrofluids and ferrogels which make viable a variety of display applications. During Phase I, the theory of ferrofluid and ferrogel microactuators for use in visual, auditory, and tactile displays will be developed. In addition, samples of ferromagnetic materials will be obtained and evaluated for their utility in microactuator applications. The theory and measurement will be combined to produced designs for devices that will be fabricated and tested during Phase II. These devices will be particularly evaluated for utility in head mounted and portable applications for mobile, active individuals. Successful prototypes tested during Phase II will be the basis of commercial products marketed during Phase III with private funding. Anticipated Benefits: This research should result-in higher performance, more rugged transducers and displays for virtual reality type applications. Another potential application is in providing a visual prosthesis for visually and sensory impaired people. An array of sensors is used to energize an array of tactile stimuli adjacent on an appropriate area of skin to emulate the defective sense.