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KTH Royal Institute of Technology

— Electronics

Rechargeable paper sheets could help rewrite the book on electricity storage

Using millions of tiny fibers of nanocellulose sheathed with a conductive polymer coating, scientists have created sheets of paper that can store significant amounts of electric charge. Dubbed "power paper," the material is able to be recharged many hundreds of time, and in mere seconds. It is also lightweight, requires no toxic chemicals or heavy metals to create, and may offer a renewable and prolific way to provide energy to all manner of devices.

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— Good Thinking

CorPower system gives wave power the gears

Harnessing wave power can be a tricky business. It's one thing to build a device that simply moves up and down with the waves, but another to build one that's efficient enough to be cost-effective. Swedish company CorPower Ocean claims to have done just that, however. Its wave energy converter buoys reportedly generate five times more energy per ton of device, at a third the cost of other wave power systems. Read More
— Science

Seaweed could provide a safer alternative to antibacterial silver

Silver nanoparticles are very effective at killing bacteria, finding use in everything from water filters to non-smelly clothing. That said, there are some major concerns regarding the effects that those particles may have on human health and on the environment. Among other things, it has been suggested that they cause cell death, and compromise the immune system. Now, however, scientists at Sweden's KTH Royal Institute of Technology have come up with what could be a less harmful alternative – red algae. Read More
— Science

Biodegradable fibers as strong as steel made from wood cellulose

A team of researchers working at Stockholm's KTH Royal Institute of Technology claim to have developed a way to make cellulose fibers stronger than steel on a strength-to-weight basis. In what is touted as a world first, the team from the institute's Wallenberg Wood Science Center claim that the new fiber could be used as a biodegradable replacement for many filament materials made today from imperishable substances such as fiberglass, plastic, and metal. And all this from a substance that requires only water, wood cellulose, and common table salt to create it. Read More
— Wearables

Digital positioning shoes keep track of firefighters

Disorientation inside smoke-filled and unfamiliar buildings can be a major obstacle for firefighters – and it's not as if they don't have enough to worry about already. Researchers at KTH Royal Institute of Technology in Stockholm have addressed this problem by developing fancy footwear that allows firefighters to be tracked in places where GPS fails, including up to 25 m below ground. Read More
— Health & Wellbeing

Mollii outfit helps minimize brain damage-caused muscle spasms

The painful and crippling muscle spasms caused by brain injuries or neurological disorders are typically controlled using medication or even surgery. Soon, however, it may be possible for sufferers to get their muscles under control just by wearing what looks like a high-tech union suit. Known as the Mollii garment, it reportedly produces no side effects, and doesn't have to be worn all the time. Read More
— Environment

Wastewater treatment process may keep fish off antidepressants

While some people may wonder about the possible side-effects of antidepressants on the people who are taking them, here’s another thing to consider ... what happens when the residue from those drugs passes through the user’s urine and into the sewage system? As it turns out, it can enter local waterways and affect the fish. Now, researchers from KTH Royal Institute of Technology in Stockholm have developed technology to keep that from happening. Read More
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