Concept Touchscreen Uses Temperature To Create Feel of Friction

Researchers at Texas A&M have come up with a novel way for touchscreens to feel more than just perfectly smooth by fooling a user's sense of touch through temperature changes. Gizmodo reports: In a recently published paper in the Science Robotics journal, they found that by regulating the temperature of the surface of a touchscreen, they can increase or decrease the amount of friction a finger feels like it's experiencing. The sensation of friction can be increased by as much as 50% by increasing a touchscreen's surface temperature from 23 degrees Celsius to 42 degrees Celsius, while the actual temperature changes are imperceptible to the user, assuming they're sticking to taps or quick swipe gestures on the screen. The current prototypes don't facilitate temperature adjustments in fine detail, but the eventual goal is to be able to manipulate and quickly change the temperature on any region of a touchscreen so that as a finger is sliding across it the changes in friction that are felt fool the brain into thinking it's feeling physical buttons like keyboards, playback controls, even joysticks and action buttons for gaming.

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