Tactile

Using touchscreens or buttons to control devices isn't always practical, and voice commands may not work in loud environments. A new system offers an alternative, in that it utilizes acoustic waves which travel across the surface of existing objects.

While technology is making strides in absorbing our eyes and ears in virtual worlds, it’s harder to engage senses like touch. Engineers have now developed WeTac, a thin, wearable electronic "skin" that provides tactile feedback to users in VR and AR.

Although there already are experimental "telehaptic" systems that allow people to send and receive tactile sensations, they tend to be bulky and awkward. A new one is much slimmer and thus more practical, thanks to the use of piezoelectric materials.

Along with providing users with sights and sounds, some VR systems also deliver tactile sensation to the hands. A new ultrasound-based setup, however, lets users feel the virtual world on and in their mouths – without making physical contact.

When someone injures a nerve in a body part such as a finger, it's not uncommon for that part to end up with a permanently decreased sense of touch. A self-powered implantable sensor, however, could one day restore sensitivity to such injured areas.

We've already seen tactile-feedback displays that convey information by applying tiny vibrations to the user's fingertips. An experimental new technology takes a different approach, however – it gets sticky in select areas.

​Amongst the challenges faced by the deaf is what's known as the "cocktail party effect," in which they have difficulty discerning one speaker's voice from others in crowded, noisy environments. A new device could help, however – by buzzing two of their fingers.

​​Anyone who has played a game of Jenga will know the delicate touch required to keep the tower of wooden blocks from crashing down, and it’s not the kind of finesse you’d associate with a typical robot. But MIT's robot arm can push and prod with the best of them.

When people want to experience tactile feedback while exploring virtual reality environments, they use hand-held devices that vibrate in response to the touching of virtual surfaces. Now, however, scientists are developing gloves that reportedly provide a much more life-like experience.

Researchers are developing an artificial nervous system for robots, a tool they believe will better equip these machines to avoid damage and preserve their well-being. ​

Sending ultrasound waves through the back of hand to deliver tactile sensations to the front might sound a little far-fetched, but by achieving just that UK scientists claim to have cleared the way for computers that use our palms as advanced interactive displays.​

​Dennis Aabo Sørensen may be missing a hand, but he nonetheless recently felt rough and smooth textures using a fingertip on that arm. The fingertip was electronic, and was surgically hard-wired to nerves in his upper arm.