Flat Panel Haptics: Embedded Electroosmotic Pumps for Scalable Shape Displays
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Flat Panel Haptics: Embedded Electroosmotic Pumps for Scalable Shape Displays
Craig Shultz, Chris Harrison
CHI 2023: The ACM CHI Conference on Human Factors in Computing Systems
Session: Touch & forces?
Flat touch interfaces, with or without screens, pervade the modern world. However, their haptic feedback is minimal, prompting much research into haptic and shape-changing display technologies which are self-contained, fast acting, and offer millimeters of displacement while only being only millimeters thick. We present a new, miniaturizable type of shape-changing display using embedded electroosmotic pumps (EEOPs). Our pumps, controlled and powered directly by applied voltage, are 1.5mm in thickness, and allow complete stackups under 5mm. Nonetheless, they can move their entire volume's worth of fluid in 1 second, and generate pressures of +/-50kPa, enough to create dynamic, millimeter-scale tactile features on a surface that can withstand typical interaction forces ( 1N). These are the requisite technical ingredients to enable, for example, a pop-up keyboard on a flat smartphone. We experimentally quantify the mechanical and psychophysical performance of our displays and conclude with a set of example interfaces.
Web:: programs.sigchi.org/chi/2023/...
Pre-recorded presentation videos for papers at CHI 2023
Пікірлер: 7
I bet Ben of Applied Science would get a kick out of this if he hasn't already seen it
Oh also, if you force fluid through an electroosmotic pump, you can detect that electrically, so it's a flow sensor as well for free. You could make one that detects if you press on the bumps
The voltages involved in order to produce a user-detectable displacement are *almost* (but not quite) into extremely-cheap ULN2003 darlington-array territory! now here I go on a saturday, tumbling down the "what very cheap darlington array can I find in volume that'll handle >100V" which is not a question I had ever considered before. I kinda wonder if there's a favorite of the folks running nixie tubes and whatnot which may be suitable...
This is amazing, I just stumbled across this video. I have a huge interest in using membrane actuators in robotics and I am looking for simplified ways of creating and controlling hydraulic flow. Is there potential for the power density and efficiency to be "ok" compared to an electromagnetic prime mover and could the stall pressure be increased by cascading multiple pumps in series?
How could the individual pixels levitate above the surface like with the bridge at the beginning clip? Magnetism? So the pixels next to them are „holding them up“? I know it’s a long way to reach the same level but what are some possible takes?
Will it be possible to extend the Inflation up to centimeters? Like in the clip at the beginning even?
@marcinwilczynski9
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Do you know material that can do this?