Materials – Lifeboat News: The Blog

Mar 25
2023

Graphene grows—physicists find a way to visualize it

Graphene is one of the strongest materials. On top of that, it is exceptionally good at conducting heat and electrical currents, making it one of the most special and versatile materials we know. For all these reasons, the discovery of graphene was awarded the Nobel Prize in Physics in 2010.

Yet, many properties of the material and its cousins are still poorly understood—for the simple reason that the atoms they are made up of are very difficult to observe. A team of researchers from the University of Amsterdam and New York University have now found a surprising way to solve this issue.

Two-dimensional materials, consisting of a hyper-thin single layer of atomic crystal, have attracted a lot of attention recently. This well-deserved attention is mainly due to their unusual properties, very different from their three-dimensional ‘bulk’ counterparts. Graphene, the most famous representative, and many other two-dimensional materials, are nowadays researched intensely in the laboratory.

Mar 24
2023

Researchers Develop Non-Invasive Graphene Sensors for Brain-Machine Interfaces

Using their non-invasive sensors, Professor Francesca Iacopi from the University of Technology Sydney and her colleagues have demonstrated hands-free communication with a quadruped robot through brain activity.

Mar 24
2023

Highly reproducible van der Waals integration of two-dimensional electronics on the wafer scale

A semirigid stamp and a standard photolithography mask-aligner enable a reliable and scalable pickup and release process for van der Waals materials integration at the wafer scale.

Mar 24
2023

Scientists discover easy way to make atomically-thin metal layers for new technology

The secret to a perfect croissant is the layers—as many as possible, each one interspersed with butter. Similarly, a new material with promise for new applications is made of many extremely thin layers of metal, between which scientists can slip different ions for various purposes. This makes them potentially very useful for future high-tech electronics or energy storage.

Until recently, these materials—known as MXenes, pronounced “max-eens”—were as labor-intensive as good croissants made in a French bakery.

But a new breakthrough by scientists with the University of Chicago shows how to make these MXenes far more quickly and easily, with fewer toxic byproducts.

Mar 23
2023

A New Kind of Battery—Oxygen-Ion—Could Change Energy

😗

It’s incredibly rechargeable, made from safe materials, and—get this—not going to catch on fire.

Mar 23
2023

Breakthrough discovery in materials science challenges current understanding of photoemission

What exactly is light—and what is it made of? It’s an age-old question that dates back to antiquity, and one of the most important investigations undertaken by scientists looking to understand the nature of reality.

Mar 22
2023

Can Plastic Waste Go Away?

How do catalysts work? When exposed to a target material, the interaction alters the molecular structure of the target without changing the catalyst.

Instead of waste plastic ending up in our oceans and landfills, we can turn it into feedstock for new hydrocarbon-based materials.

Mar 18
2023

“Off Switch” Makes Explosives Safer

An explosive material fabricated with a highly porous structure is inactive but is easily “switched on” when filled with water.

Despite great effort, researchers have failed to find ways to make explosives entirely safe during storage yet still easily usable when needed. Now a research team has demonstrated an explosive with these properties by creating a highly porous structure for their explosive material [1]. The voids prevent the structure from supporting a sustained propagating wave of detonation, but filling the voids with water can quickly restore the explosive capacity. The researchers hope this technique can provide safer explosives for use in areas such as mining and oil exploration.

Storing highly explosive materials is inherently risky—in the military world, for example, over 500 accidental explosions occurred at munitions sites between 1979 and 2013, according to a survey [2]. These materials could be safer if they could be easily switched between an explosive-ready state and a “safe” state. “A switchable explosive is the holy grail of explosives research,” says chemist Alexander Mueller of the Los Alamos National Laboratory in New Mexico. He and his colleagues believe that they are the first to achieve it.

Mar 17
2023

The key to consciousness

The relationship between the individual human subject and the world was once the central focus of Western philosophy. Modern neuroscience has instead tended to assume that the world is purely material and physical, and the problem of consciousness a question of how to generate thought from matter. Yet, we are no closer to solving the deep puzzle of consciousness and many argue that the American philosopher Thomas Nagel is right when he maintains that the question of consciousness ‘cannot be detached from subject and object’.

Is the notion that the world is purely material a fundamental mistake? Would we be more likely to unlock the mysteries of consciousness by once again adopting the framework of the subject and object? Or will slow, piecemeal advances in neuroscience and analytic philosophy eventually yield the answers that we have been searching for?

Revolutionary cognitive psychologist Donald Hoffman (joining us live from across the pond), neuroscientist Hannah Critchlow and philosopher Sam Coleman battle to unlock consciousness. Hosted by award-winning novelist Joanna Kavenna.

Mar 17
2023

2 Pairs of Gigantic Runaway Black Holes Spotted on Collision Course, And They’re Bringing Four Entire Galaxies With Them

Two pairs of gigantic black holes, each in a different dwarf galaxy, are speeding towards each other, and they’re set for two separate, never-before-seen collisions.

Astronomers used NASA’s Chandra X-ray Observatory to spot the four dwarf galaxy black holes racing towards each other, dragging an enormous train of gas and stars in their wake. Some of this material is already being sucked into the black holes, causing them to grow ever larger before their eventual crashes.