This new interface is a type of
haptic device, a technology that remotely conveys tactile signals. A common
example is video game controllers that vibrate when the player’s avatar takes a
hit. Some researchers think more advanced, wearable versions of such interfaces
will become a vital part of making virtual and augmented reality experiences
feel like they are happening. Researchers developed a vibrating disk, only a
couple millimeters thick, that can run with very little energy. These actuators
(a term for devices that give a system physical motion) need so little energy
that they can be powered by near-field communication—a wireless method of
transferring small amounts of power, typically used for applications like
unlocking a door with an ID card.
The resulting product looks like
a lightweight, soft patch of fabric-like material that can flex and twist like
a wet suit, maintaining direct contact with the wearer’s skin as their body
moves. It consists of thin layers of electronics sandwiched between protective
silicone sheets. One layer contains the near-field communication technology
that powers the device. This can activate another layer: an array of actuators,
each of which can be activated individually and tuned to different vibration
frequencies to convey a stronger or weaker sensation. This stack of
electronics, slightly thinner than a mouse pad, culminates in a tacky surface
that sticks to the skin. Researchers have tested prototype patches of different
shapes and sizes to fit on various parts of the body.
More information: