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Seeing inside superfog

Researchers at the University of California, Riverside, successfully replicated superfog formation in a laboratory setting, revealing crucial factors such as low water content, small particle size, and high fuel moisture content. While they can now understand how superfog forms, predicting its occurrence remains uncertain due to comple...

SourceUniversity of California - Riverside·JournalFire Safety Journal·DateMay 22, 2019

Water walking -- The new mode of rock skipping

Researchers at Utah State University have discovered a new mode of water surface skipping termed 'water walking', which involves elastic spheres gaining significant speed to maintain a deformed shape. The team's findings provide new insights into water impact physics and lay the foundation for future design of water-walking drones.

SourceUtah State University·JournalScientific Reports·DateApr 23, 2019

Ankle exoskeleton fits under clothes for potential broad adoption

Researchers at Vanderbilt University have developed a lightweight, low-profile, and inexpensive ankle exoskeleton that can be worn under clothes without restricting motion. The device features an unpowered friction clutch mechanism and a soft shank sleeve, weighing just over one pound and costing less than $100 to fabricate.

SourceVanderbilt University·JournalIEEE Transactions on Neural Systems and Rehabilitation Engineering·DateMar 22, 2019

Faster robots demoralize co-workers

A study by Cornell University found that when robots excel in competitions, people perceive themselves as less capable and less likable. The research suggests optimizing teams of humans and robots to minimize negative effects on human behavior and reactions.

Tracking firefighters in burning buildings

Researchers have developed a motion-powered, fireproof sensor that can track the movements of firefighters and others in high-risk environments. The sensor generates power through triboelectric charging and has been successfully tested at temperatures up to 300C.

SourceMcMaster University·JournalNano Energy·DateMar 1, 2019

The secret life of batteries

Researchers are working on developing faster-charging batteries for electric vehicles by understanding how lithium ions distribute within the electrode. They used X-rays to create a micron-scale movie of lithium distribution, revealing inhomogeneous movement similar to people spreading out in a room.

SourceUniversity of Delaware·JournalEnergy & Environmental Science·DateFeb 18, 2019

Next-gen batteries possible with new engineering approach

Researchers developed a three-dimensional polymer sponge that promotes ion transfer while inhibiting dendritic growth in lithium metal batteries, potentially increasing cycle life and safety. The technology could enable more powerful and stable metal battery technologies for everyday use.

SourcePenn State·JournalNature Energy·DateNov 14, 2018

Novel sensors could enable smarter textiles

Researchers at the University of Delaware developed flexible carbon nanotube composite coatings on various fibers, enabling the measurement of a wide range of pressure. The technology has potential applications in smart garments, sports medicine, post-surgical recovery, and assessing movement disorders in pediatric populations.

SourceUniversity of Delaware·JournalACS Sensors·DateAug 16, 2018

Low-cost prosthetic foot mimics natural walking

MIT engineers developed a simple, low-cost passive prosthetic foot that can be tailored to an individual's body weight and size, allowing for a more natural gait. The custom-designed prostheses use a design framework that predicts a user's biomechanical performance based on the mechanical design of the prosthetic foot.

SourceMassachusetts Institute of Technology·JournalIEEE Transactions on Neural Systems and Rehabilitation Engineering·DateJun 28, 2018

Organic crystals twist, bend, and heal

Scientists have engineered a molecular soft cocrystalline structure that exhibits reversible twisting upon heating, elastic bending under mechanical force, rapid reversible bending under UV light, and self-healing properties. This multifunctional quality makes it an attractive candidate for advanced materials in electronics and optics.

SourceWiley·JournalAngewandte Chemie International Edition·DateJun 18, 2018

Future robots need no motors

A novel actuating material system, nickel hydroxide-oxyhydroxide, has been developed at HKU Engineering that can be triggered by visible light and electricity. This material can exert a force equivalent to 3000 times its own weight, making it suitable for various applications in micro-robotics, human assist devices, and medical devices.

SourceThe University of Hong Kong·JournalScience Robotics·DateJun 4, 2018