I think I’ll wear my robot

The world of wearable tech is continually expanding — from heart rate to glucose monitors, but is a wearable robot possible? It seems so.

A group of South Korean scientists have designed an exosuit made of fabric weighing less than half a kilogram to help people with neuromuscular diseases like Duchenne muscular dystrophy move their arms with ease.

Just like real muscles, the tiny springs made of smart metal inside contract and relax with heat. The suit has the look and feel of real clothing and can be controlled with a smartphone app to adapt support levels.

Eight people have tested the suit and have reported 50 percent improved shoulder movement and 20 percent less difficulty performing daily tasks.

Muscle strain was also reduced, meaning users needed less effort to move.

The research team aims to make the suit smarter and able to naturally respond to the wearer’s motions.

The research was published in IEEE Transactions on Neural Systems and Rehabilitation Engineering.

More like this: Wearable tech helps protect workers from heatstroke

Squeeze those hydrogels

A research team from Japan and France has developed a new sort of mechanophore, a molecule that jumps into action when it experiences force, kind of like an assistant inside the softer hydrogel that wakes up to help and make them stronger.

It’s all thanks to a naturally derived molecule called camphanediol. This molecule is tough in the heat, steady under UV light and ready to react when squeezed. Most mechanophores break down easily or need delicate chemical setups to work — but not this one.

When camphanediol gets stretched or pulled inside a hydrogel, it snaps certain chemical bonds in a very specific way. This releases mechanoradicals — tiny chemical sparks that can start new reactions. These sparks reinforce the material, similar to rebuilding muscle after a workout.

Tests showed that hydrogels with camphanediol generated over four times more of these strengthening sparks than regular versions. Additionally, the more it was stressed, the stronger it got, without resulting damage.

The findings could lead to smart materials that adapt and increase resilience on the fly, perfect for soft robots, medical devices and wearable tech.

The paper was published in Chemical Science.

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Wearable tech helps protect
workers from heat stroke

Between 1992 and 2017, 815 American workers died and another 70,000 were seriously injured from heat stress, according to the U.S. Occupational Safety and Health Administration. But new wearable tech could make laboring outdoors much safer.

American company Kenzen developed a device that attaches to a strap a worker can wear on the upper arm, similar to one a runner might use to carry a phone. It measures the wearer’s core body temperature; heart rate; how much the worker sweats; and level of activity. The device indicates in real time if the wearer is in danger of heat stroke and is used as a preventative tool.

A signal sent to the wearer and any nearby health and safety managers indicates the worker needs a break. The detailed health information, however, is sent to only the wearer in order to maintain privacy. The data is stored in the cloud so companies can analyze patterns and adapt work schedules.

UAE-based Emirates Global Aluminium ran a trial on the device with 50 employees in summer 2022, CNN reports.

Without these factors in place, wearable technology on its own cannot eliminate the risk of heat-related illness for people working outside.

Salman Abdulla, Emirates Global Aluminium

Salman Abdulla. CREDIT: Emirates Global Aluminium

Though the data from the trial is still in review, the metal producer reports that the device did well maintaining connectivity in difficult areas and fared well in terms of comfort. Additionally, they were able to identify increases in susceptibility to heat-related illnesses at the end of the day and if the wearer was fatigued prior to beginning a shift.

The company managed zero heat-related illnesses so far in 2022 and will continue to examine what role the device played in this result. The first year without heat-related incidents for the company was 2019. Emirates Global Aluminium is the largest industrial company in the UAE outside of the oil and gas sector.

“This is complementary to the decades of work we have done on heat-stress, which focuses on providing workers with knowledge to actively care for themselves and others around them, empowering them to take action when they have a concern, and providing the tools and resources they need to take that action. Without these factors in place, wearable technology on its own cannot eliminate the risk of heat-related illness for people working outside,” Salman Abdulla, the company’s executive vice president for environment, health, safety and sustainability, tells KUST Review.

Wearable safety technology includes smart helmets, smart footwear, exoskeletons and smart safety vests.