Category Technology/Electronics

Scientists convert Plastics into useful Chemicals using Sunlight

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Visible Light–Driven Cascade Carbon–Carbon Bond Scission for Organic Transformations and Plastics RecyclingAdvanced Science, 2019; 1902020 DOI: 10.1002/advs.201902020

Chemists at Nanyang Technological University, Singapore (NTU Singapore) have discovered a method that could turn plastic waste into valuable chemicals by using sunlight.

In lab experiments, the research team mixed plastics with their catalyst in a solvent, which allows the solution to harness light energy and convert the dissolved plastics into formic acid – a chemical used in fuel cells to produce electricity.

Reporting their work in Advanced Science, the team led by NTU Assistant Professor Soo Han Sen from the School of Physical and Mathematical Sciences made their catalyst from the affordable, biocomp...

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Tiny Magnetic Particles enable new Material to Bend, Twist, and Grab

An assortment of objects made from magnetic shape-memory polymers. (Credit: Shuai Wu, The Ohio State University)

A team of researchers from the Georgia Institute of Technology and The Ohio State University has developed a soft polymer material, called magnetic shape memory polymer, that uses magnetic fields to transform into a variety of shapes. The material could enable a range of new applications from antennas that change frequencies on the fly to gripper arms for delicate or heavy objects.

The material is a mixture of three different ingredients, all with unique characteristics: two types of magnetic particles, one for inductive heat and one with strong magnetic attraction, and shape-memory polymers to help lock various shape changes into place.

“This is the first material t...

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Storing Data in Everyday Objects

3D-printed plastic rabbit
A 3D-​printed plastic rabbit. The plastic contains DNA molecules in which the printing instructions have been encoded. (Photograph: ETH Zurich / Julian Koch)

Researchers and an Israeli scientist have discovered a new method for turning nearly any object into a data storage unit. This makes it possible to save extensive data in, say, shirt buttons, water bottles or even the lenses of glasses, and then retrieve it years later. The technique also allows users to hide information and store it for later generations. It uses DNA as the storage medium.

Living beings contain their own assembly and operating instructions in the form of DNA. That’s not the case with inanimate objects: anyone wishing to 3D print an object also requires a set of instructions...

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Developing a Digital Twin of a Vehicle

Flight of the UAV estimations
In the case of the digital twin UAV, Willcox’s system is able to capture and communicate the evolving changes in the health of the UAV. It can also explain what sensor readings are indicating declining health and driving the predictions.

Researchers create virtual UAVs that can predict vehicle health, enable autonomous decision-making. In the not too distant future, we can expect to see our skies filled with unmanned aerial vehicles (UAVs) delivering packages, maybe even people, from location to location.

In such a world, there will also be a digital twin for each UAV in the fleet: a virtual model that will follow the UAV through its existence, evolving with time...

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