Touch

In order to keep from hurting their human coworkers, many robots have sensors that detect contact with people or other objects. Scientists have now devised a high-tech sweater which brings this functionality to robots that don't have it already.

Last year we heard about an "electronic skin" developed at City University of Hong Kong, which delivers tactile sensations to wearers. The university has now gone one better, with an e-skin that both senses and reproduces users' touches.

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.

A touch-sensitive protein normally located in the skin has now been found in the gut. It senses the presence of food and triggers contractions to push it along, while reduced levels of this protein may be implicated in conditions like constipation.

Facebook recently rebranded as Meta, with an eye toward the development of VR/AR tech. In one of its first projects since the announcement, it's collaborating with Carnegie Mellon University on the development of a touch-sensitive electronic skin.

The 2021 Nobel Prize in Physiology or Medicine has been awarded jointly to David Julius and Ardem Patapoutian, for their work uncovering the receptors that allow us to perceive temperature and pressure.

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.

There are now a number of materials designed to give robots or prostheses a sense of touch. And while most of them are thin and skin-like, a new alternative takes the form of a spongey foam – and it combines several desirable qualities.

There are currently a number of groups developing touch-sensitive electronic skin for robots. Scientists at Cornell University are pursuing a simpler approach, however, using shadow-imaging cameras to let robots know when they're being touched.

Although we've already heard about pressure-sensitive "skins" that could be applied to robotic appendages, scientists have created one for use on human fingers. And while you might wonder why they bothered, it actually has an interesting application.

Researchers in Australia have succeeded in developing an artificial skin that responds to painful stimuli, heat and pressure like real skin does, which they see as an important step towards intelligent machines and prosthetics.

When we pick up an object, we can adjust our grip if that object proves to be a slippery customer. ETH researchers have developed a sensor that could help robot grippers to do the same.