Category Physics

‘Magic-Angle’ Trilayer Graphene may be a rare, Magnet-Proof Superconductor

magic-angle twisted trilayer graphene
MIT physicists have observed signs of a rare type of superconductivity in a material called “magic-angle” twisted trilayer graphene.
Credits:Image: Courtesy of the researchers

New findings might help inform the design of more powerful MRI machines or robust quantum computers. MIT physicists have observed signs of a rare type of superconductivity in a material called magic-angle twisted trilayer graphene. In a study appearing in Nature, the researchers report that the material exhibits superconductivity at surprisingly high magnetic fields of up to 10 Tesla, which is three times higher than what the material is predicted to endure if it were a conventional superconductor.

The results strongly imply that magic-angle trilayer graphene, which was initially discovered by the same grou...

Read More

Scientists create World’s Thinnest Magnet

Illustration of magnetic coupling in a cobalt-doped zinc-oxide monolayer. Red, blue, and yellow spheres represent cobalt, oxygen, and zinc atoms, respectively. (Credit: Berkeley Lab)

The development of an ultrathin magnet that operates at room temperature could lead to new applications in computing and electronics—such as high-density, compact spintronic memory devices—and new tools for the study of quantum physics. It was discovered by scientists at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and UC Berkeley.

“We’re the first to make a room-temperature 2-D magnet that is chemically stable under ambient conditions,” said senior author Jie Yao, a faculty scientist in Berkeley Lab’s Materials Sciences Division and associate professor of material...

Read More

New Algorithm may help Autonomous Vehicles Navigate Narrow, crowded streets

A CMU team developed a algorithm that could help an autonomous vehicle safely and efficiently navigate narrow, crowded streets like this one.

Autonomous vehicle researchers have tackled navigating a crowded, narrow street, with cars parked on both sides, and not enough space for vehicles traveling in both directions to pass each other. It is a scenario familiar to anyone who has driven down a crowded, narrow street. Parked cars line both sides, and there isn’t enough space for vehicles traveling in both directions to pass each other. One has to duck into a gap in the parked cars or slow and pull over as far as possible for the other to squeeze by.

Drivers find a way to negotiate this, but not without close calls and frustration...

Read More

Scientists Create the World’s Toughest Self-Healing Material

Scientists Create the World’s Toughest Self-Healing Material

Scientists have been working for decades to develop materials that can heal themselves, and they have had some success, too. For example, American Chemical Society researchers were able to develop small, swimming robots that can magnetically heal themselves, while researchers from the National University of Singapore took a different approach by making a smart foam material that allows robot hands to self-repair and sense objects.

However, one issue with these projects is that they are soft and opaque and not very suitable for rugged applications. So the researchers at IISER, along with those at the Indian Institute of Technology (IIT), Kharagpur decided to focus on developing something that is harder than conventional self-healing material, as reported by The Telegraph India.

T...

Read More