Materials

You may have heard how the BPA (bisphenol A) in some food-packaging plastics has been linked to various health problems. Scientists are thus developing a more innocuous alternative, and it's made from tomato waste which would otherwise be discarded.

Even though glass is praised for being fully recyclable, the EPA states that only about a third of discarded glass items actually get recycled. With that problem in mind, scientists have developed a new type of glass which is biodegradable.

Scientists at the University of Rochester claim to have created a material that acts as a superconductor at room temperature and lower pressures than ever before. If confirmed, this “reddmatter,” as they call it, could mark a major breakthrough.

Knots are known for boosting the strength of materials, and now Caltech engineers have developed a new material consisting of microscale knots, showing that it’s far tougher than a version of the material made of the same stuff without knots.

Bacteria often get a bad rap, but in many cases they’re helpful little critters. Engineers have now developed a protective coating for buildings that’s loaded with bacteria, which absorb CO2 to produce a barrier against erosion by the elements.

Although glass is known for being fully recyclable, the US Environmental Protection Agency states that only about one third of post-consumer glass actually gets recycled. A new glass-based building cladding material could help boost that number.

Traditional paint gets it color from synthetic pigments, which fade over time and aren't very eco-friendly. There may soon be a better alternative, though, in the form of a paint which incorporates color-producing nanostructures.

Georgia Tech scientists have discovered a new quantum state in a quirky material. In a phenomenon never before seen in anything else, the team found that applying a magnetic field increased the material’s electrical conductivity by a billion percent.

A versatile new material helps in the ongoing battle against corrosion. The polymer coating not only protects against corrosion, but highlights cracks as they form, automatically repairs damage to itself, and can be recycled at the end of its life.

Ohio State researchers have shown how a common ceramic material can change its thermal conductivity in response to an electrical field, opening the door to solid-state heat switches that could make thermoelectric generators much more efficient.

Ice on roads isn't a good thing, but neither are the eco-unfriendly chloride-based salts used to melt it. Scientists have developed a greener and more effective alternative, however, that could be mixed into the asphalt and remain active for years.

Researchers have used a novel 3D printing technique to create a new superalloy with "previously unobtainable combinations of high strength, low weight and high-temperature resiliency" – and they say the implications in aerospace and energy are huge.

Although we've seen a number of systems that use sunlight to purify tainted water, their output is often quite limited. A new loofah-inspired hydrogel, however, uses sunlight to treat much more water in one go … enough to meet a person's daily needs.

A team of researchers has developed a new material that’s not only elastic, but is impervious to gases and liquids – something this kind of material is usually bad at. The material could be useful for making flexible batteries or wearable electronics.

Researchers have created a new class of robots that can shift between solid and liquid forms on demand. In a series of tests, these new bots could change shape to run obstacle courses, carry objects, or even escape from a jail cell like a Terminator.