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Archive for the ‘materials’ category: Page 283

Nov 26, 2015

New ‘self-healing’ gel makes electronics more flexible

Posted by in categories: electronics, energy, materials

Researchers in the Cockrell School of Engineering at The University of Texas at Austin have developed a first-of-its-kind self-healing gel that repairs and connects electronic circuits, creating opportunities to advance the development of flexible electronics, biosensors and batteries as energy storage devices.

Although technology is moving toward lighter, flexible, foldable and rollable electronics, the existing circuits that power them are not built to flex freely and repeatedly self-repair cracks or breaks that can happen from normal wear and tear.

Until now, self-healing materials have relied on application of external stimuli such as light or heat to activate repair. The UT Austin “supergel” material has high conductivity (the degree to which a material conducts electricity) and strong mechanical and electrical self-healing properties.

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Nov 26, 2015

Zeoform: A New Plastic That Turns Hemp Into Almost Anything

Posted by in categories: energy, materials

A new type of plastic removes the need for fossil fuels and toxic chemicals, replacing it with a simple mixture of hemp and water.

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Nov 25, 2015

Self-Healing Concrete

Posted by in category: materials

Say ‘goodbye’ to cracks, self-healing concrete has arrived.

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Nov 25, 2015

Mining the Solar System –Will it Spawn the Next Google?

Posted by in categories: materials, space

Asteroids are primordial material left over from the formation of the Solar System. They are scattered throughout it: some pass close to the Sun, and others are found out beyond the orbit of Neptune. A vast majority have been collected by Jupiter’s gravity into a belt between it and Mars – an area known as the Main Belt. As it turns out, we have been discovering thousands of asteroids that do not belong to the Main Belt, but instead pass near Earth’s orbit – nearly 9,000 to date, with almost a thousand more are discovered every year.

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Nov 25, 2015

Inkjet hologram printing now possible

Posted by in categories: chemistry, materials, security

Vivid holographic images and text can now be produced by means of an ordinary inkjet printer. This new method, developed by a team of scientists from ITMO University in Saint Petersburg, is expected to significantly reduce the cost and time needed to create the so-called rainbow holograms, commonly used for security purposes — to protect valuable items, such as credit cards and paper currency, from piracy and falsification. The results of the study were published 17 November in the scientific journal Advanced Functional Materials.

The team, led by Alexander Vinogradov, senior research associate at the International Laboratory of Solution Chemistry of Advanced Materials and Technologies (SCAMT) in ITMO University, developed colorless ink made of nanocrystalline titania, which can be loaded into an inkjet printer and then deposited on special microembossed paper, resulting in unique patterned images. The ink makes it possible to print custom holographic images on transparent film in a matter of minutes, instead of days as with the use of conventional methods.

Rainbow holograms are widely used to fight against the forgery of credit cards, money, documents and certain manufactured products that call for a high level of protection. Even though the technology of obtaining holographic images was already developed in the 1960s, there still exist numerous technical difficulties that impede its further spread and integration into polygraphic industry.

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Nov 25, 2015

‘Material universe’ yields surprising new particle

Posted by in categories: computing, materials, particle physics, quantum physics

An international team of researchers has predicted the existence of a new type of particle called the type-II Weyl fermion in metallic materials. When subjected to a magnetic field, the materials containing the particle act as insulators for current applied in some directions and as conductors for current applied in other directions. This behavior suggests a range of potential applications, from low-energy devices to efficient transistors.

The researchers theorize that the particle exists in a material known as tungsten ditelluride (WTe2), which the researchers liken to a “material universe” because it contains several , some of which exist under normal conditions in our universe and others that may exist only in these specialized types of crystals. The research appeared in the journal Nature this week.

The new particle is a cousin of the Weyl fermion, one of the particles in standard theory. However, the type-II particle exhibits very different responses to electromagnetic fields, being a near perfect conductor in some directions of the field and an insulator in others.

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Nov 23, 2015

Diamond Nanothreads Could Support Space Elevator

Posted by in categories: materials, space

A string of benzene molecules that’s 20,000 times smaller than a strand of human hair is the strongest material ever made.

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Nov 23, 2015

World’s first cyber-plants fuse electronics with roses

Posted by in categories: electronics, materials

For the first time, scientists have created analogue and digital electronic circuits inside living plants, using the vascular system of living roses to build – or rather ‘grow’ – the central components of electronic circuits.

Researchers at Linköping University in Sweden merged numerous electrical components inside the roses, including wires, digital logic, and even display-based elements, thanks to a special polymer that’s capable of acting like a wire while still transporting organic material such as water and nutrients through the rose’s stem.

By successfully incorporating electronics into the living systems of plants, it’s hoped we’ll be able to find out much more about the chemical processes and pathways that make them function – and we could even learn to control and manipulate them.

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Nov 20, 2015

From air to plastic

Posted by in category: materials

This plastic is made from thin air — and taking on a $373 billion dollar-a-year industry: http://cnnmon.ie/1I2paBM

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Nov 19, 2015

Breakthrough! Glasgow scientists discover a cheap way to produce the wonder material graphene

Posted by in categories: biotech/medical, cyborgs, materials, mobile phones

It has been hailed as a wonder material set to revolutionise everyday life, but graphene has always been considered too expensive for mass production – until now.

Scientists at Glasgow University have made a breakthrough discovery, allowing graphene to be produced one hundred times more cheaply than before, opening it up to an array of new applications.

First isolated in 2004, the miracle material can be used in almost anything from bendable mobile phone screens to prosthetic skin able to provide sensation.

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