A technology recently developed by Disney is likely to bring permanent improvements to touch screen devices worldwide. Imagine this situation: when you swipe on a glass screen, your finger feels like it is scratched on sandpaper. This is also a new technology developed by Disney recently, which can make your fingers illusion, so that it has a physical feedback like real. From a scientific point of view, Disney found that electrostatic vibration generates an electrostatic force, which makes your fingers believe that the glass you touch has a certain texture, which in turn creates a sense of friction.
The Disney team has developed different computing solutions for different touches. This scheme is mainly composed of three parts: 1) first calculate the texture slope of the surface of the material we want to simulate, 2) calculate the "dot product" of the virtual surface on the screen, and the speed of sliding with the finger, 3) finally This "dot product" is simulated on the screen with voltage. Although these steps sound very simple, the actual development difficulty is far more than that. This calculation is based on the frequency of protrusions felt by our fingers across a certain surface, and the friction pressure from the skin reacts to our fingers.
The above mentioned technology does not appear in the fairy tale world where Goofy Dog is located, but can be actually realized in our lives. Although this technology is still in the initial stage, it cannot be applied in a large area, but when this technology matures, our touch screen will definitely become more fun.
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