0:01 [Music] haptics is the science of touch it's how we interface with the world in many aspects um and ultrahaptics is about how we create that sense of touch in midair so we can create buttons and Sliders and switches or even virtual objects in midair that you can touch that really don't exist uh we how we do this is by
0:32 using ultrasonic transducers um an array of them where we can change the amplitude and phase of the all all the transducers individually which means that we can bring all the sound waves to the to a single point at the same time which creates a high pressure level that you can feel on your skin now the skin can't respond to Ultrasonics it only responds to frequencies of 0 to 500 Hertz so we modulate the Ultrasonics at a frequency around 2 to 400 HZ which creates a sense
1:04 of touch now if you touch a surface you don't feel anything but if you slide your hand across it you can feel the texture of that simply by the vibrations that come off that piece of material or that piece of wood or whatever you're touching and uh we can recreate that in midair by how we modulate the ultrasonic technology and so it allows us to create not only the sense of touch but a sense of of texture um and able to recreate things that you wouldn't normally be
1:35 able to [Music] recreate
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