Category Technology/Electronics

Engineers 3D-print Personalized, Wireless Wearables that Never Need a Charge

a wearable device
University of Arizona engineers have developed a way to 3D-print medical-grade wearable devices, such as this one, based on body scans of the wearer.Philipp Gutruf/College of Engineering

The new devices, custom made to fit individuals, could mean massive improvements in monitoring and treatment of diseases. Wearable sensors to monitor everything from step count to heart rate are nearly ubiquitous. But for scenarios such as measuring the onset of frailty in older adults, promptly diagnosing deadly diseases, testing the efficacy of new drugs or tracking the performance of professional athletes, medical-grade devices are needed.

University of Arizona engineers have developed a type of wearable they call a “biosymbiotic device,” which has several unprecedented benefits...

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Novel Quantum Effect discovered in Naturally Occurring Graphene

The gold contacts are shown as yellow, the graphene double layers red, and the metal bridge blue.

Photo: Fabian Geisenhof/Jakob Lenz

International research team finds atomically-thin carbon generates its own magnetic field. Usually, the electrical resistance of a material depends very much on its physical dimensions and fundamental properties. Under special circumstances, however, this resistance can adopt a fixed value that is independent of the basic material properties and “quantised” (meaning that it changes in discrete steps rather than continuously). This quantisation of electrical resistance normally occurs within strong magnetic fields and at very low temperatures when electrons move in a two-dimensional fashion...

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Smuggling Light through Opaque Materials

Smuggling light through opaque materials
A metasurface made of arsenic trisulfide nanowires (yellow) transmit an incoming near-infrared frequency (red) as well as its third harmonic ultraviolet frequency (violet), which would normally be absorbed by the material. Credit: Duke University

Electrical engineers at Duke University have discovered that changing the physical shape of a class of materials commonly used in electronics and near- and mid-infrared photonics—chalcogenide glasses— can extend their use into the visible and ultraviolet parts of electromagnetic spectrum. Already commercially used in detectors, lenses and optical fibers, chalcogenide glasses may now find a home in applications such as underwater communications, environmental monitoring and biological imaging.

The results appear online on October 5 in th...

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A Robot that Finds Lost Items

robot with camera
Researchers at MIT have developed a fully-integrated robotic arm that fuses visual data from a camera and radio frequency (RF) information from an antenna to find and retrieve objects, even when they are buried under a pile and fully out of view.
Credits:Courtesy of the researchers

This robotic arm fuses data from a camera and antenna to locate and retrieve items, even if they are buried under a pile. A busy commuter is ready to walk out the door, only to realize they’ve misplaced their keys and must search through piles of stuff to find them. Rapidly sifting through clutter, they wish they could figure out which pile was hiding the keys.

Researchers at MIT have created a robotic system that can do just that...

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