Category Technology/Electronics

Flexible Generators turn Movement into Energy

Rice University postdoctoral researcher Michael Stanford holds a flip-flop with a triboelectric nanogenerator, based on laser-induced graphene, attached to the heel. Walking with the flip-flop generates electricity with repeated contact between the generator and the wearer's skin. Stanford wired the device to store energy on a capacitor. (Credit: Jeff Fitlow/Rice University)
Rice University postdoctoral researcher Michael Stanford holds a flip-flop with a triboelectric nanogenerator, based on laser-induced graphene, attached to the heel. Walking with the flip-flop generates electricity with repeated contact between the generator and the wearer’s skin. Stanford wired the device to store energy on a capacitor. Photo by Jeff Fitlow

Laser-induced graphene nanogenerators could power future wearables. Researchers have produced triboelectric nanogenerators with laser-induced graphene. The flexible devices turn movement into electrical energy and could enable wearable, self-powered sensors and devices.

The Rice lab of chemist James Tour has adapted laser-induced graphene (LIG) into small, metal-free devices that generate electricity...

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Beyond 1 and 0: Engineers boost Potential for Creating Successor to Shrinking Transistors

The image on the left shows two forms of zinc oxide combined to form a composite nanolayer in a new type of transistor: Zinc oxide crystals (inside the red circles) are embedded in amorphous zinc oxide. The image on the right is a computer model of the structure that shows electron density distribution.

Scientists offer a solution to the fast-approaching physical minimum for transistor size: a multi-value logic transistor based on zinc oxide, capable of two stable intermediate states between 0 and 1. Computers and similar electronic devices have gotten faster and smaller over the decades as computer-chip makers have learned how to shrink individual transistors, the tiny electrical switches that convey digital information.

Scientists’ pursuit of the smallest possible transistor has...

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A Rose inspires Smart Way to collect and Purify Water

Cockrell School of Engineering, The University of Texas at Austin

A new device for collecting and purifying water, developed at The University of Texas at Austin, was inspired by a rose and, while more engineered than enchanted, is a dramatic improvement on current methods. Each flower-like structure costs less than 2 cents and can produce more than half a gallon of water per hour per square meter.

A team led by associate professor Donglei (Emma) Fan in the Cockrell School of Engineering’s Walker Department of Mechanical Engineering developed a new approach to solar steaming for water production –a technique that uses energy from sunlight to separate salt and other impurities from water through evaporation.

In a paper published in the most recent issue of the journal Advanced M...

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Synthetic Version of CBD treats Seizures in Rats

Hemp oil stock art
CBD from extracts of cannabis or hemp plants could be used to treat epilepsy and other conditions. UC Davis chemists have come up with a way to make a synthetic version of CBD and showed that it is as effective as herbal CBD in treating seizures in rats. (Getty images)

A synthetic, non-intoxicating analogue of cannabidiol (CBD) is effective in treating seizures in rats, according to research by chemists at the University of California, Davis.

The synthetic CBD alternative is easier to purify than a plant extract, eliminates the need to use agricultural land for hemp cultivation, and could avoid legal complications with cannabis-related products. The work was recently published in the journal Scientific Reports.

“It’s a much safer drug than CBD, with no abuse potential and doesn...

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