Materials

Scientists have accidentally discovered a particle that has mass when traveling in one direction, but no mass while moving in a different direction. Known as semi-Dirac fermions, particles with this bizarre behavior were first predicted 16 years ago.

From a handheld soldering gun to the 'playbird mansion' and, of course, the marvel of a smartphone microscope, there are some gadgets that we come across that we instantly want – and this wireless ultrasonic cutter is definitely another.

Under the right circumstances, electrons can actually “freeze” into a bizarre solid form. Now, physicists at Berkeley Lab have created and taken the first ever direct images of this structure.

Researchers at UC Berkeley have invented a material in powder form that adsorbs carbon dioxide with astonishing performance. Just 200 g (a little under 0.5 lb) can suck up 44 lb (20 kg) of CO2, the same as a tree does in a year.

Researchers at MIT have unexpectedly stumbled upon a way to 3D print active electronics – meaning transistors and components for controlling electrical signals – without the use of semiconductors or even special fabrication technology.

A new type of carbon-neutral concrete has been commercially used for the first time, in a skyscraper being built in Manhattan. The binder utilized in the concrete is made of granite instead of traditional greenhouse-gas-emitting limestone cement.

While clay is widely used to build basic structures such as huts, we typically don't see it being utilized in large-scale construction projects. That could soon change, however, thanks to a recently developed process known as impact printing.

Scientists have demonstrated a new potential treatment for bone cancer. A bioactive glass laced with a toxic metal was able to kill up to 99% of the cancer without harming healthy cells, and could even help regrow healthy bone after.

Although wind turbines generate electricity via an eco-friendly process, their blades end up in landfills once they wear out. That could change, however, thanks to a resin that would allow old blades to be broken down and recycled into new ones.

Metalworking usually requires very high heat and pressure, but scientists in Singapore have now demonstrated a way to make very pure metal structures at room temperature. It’s inspired by the exoskeletons of crabs and insects.

The 3D printing of certain items could soon get a lot faster, simpler and more eco-friendly. That's because scientists have developed a new 3D printing ink which is easily extruded as a liquid, then solidifies on contact with a saltwater solution.

It’s ironic that while many regions struggle with water shortages, there’s heaps of the stuff floating around in the air everywhere. A new MIT water harvester design can pull enough fresh water out of the air to meet the daily needs of several people.