Revel is a new wearable tactile technology that modifies the user’s tactile perception of the physical world. Current tactile technologies enhance objects and devices with various actuators to create rich tactile sensations, limiting the experience to the interaction with instrumented devices. In contrast, REVEL can add artificial tactile sensations to almost any surface or object with very little if any instrumentation of the environment. As a result, REVEL can provide dynamic tactile sensations on touch screens as well as everyday objects and surfaces in the environment, such as furniture, walls, wooden and plastic objects, and even human skin.
Revel is based on Reverse-Electrovibration. It applies a weak electrical signal anywhere on the user’s body, creating an oscillating electrical field around the user’s skin. When sliding one's fingers on a surface of the object, the user perceives highly distinctive tactile textures that augment the physical object. Varying the properties of the signal, such as the shape, amplitude and frequency, can provide a wide range of tactile sensations.
Revel is based on Reverse Electrovibration. It injects an imperceptible electrical signal into the user’s body that creates an electrostatic field around the skin. When sliding one's fingers on a physical object covered with an electrode and insulator, the electrostatic force modulates the friction between the sliding finger and the object. BothRevel and the objects share common ground.
Revel can be embedded in the casing of mobile displays. In this application, the user can change both the visual texture and the tactile texture of an object without any instrumentation of the physical object itself. Since the Revelsignal is applied to the user through the casing of the device, the tactile textures can be felt by the finger touching the display, as well as when the user slides his finger on the physical object itself.
source:oliver bau
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