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Archive for the ‘materials’ category

Nov 21, 2024

“Mushroom leather” is the latest eco-friendly fashion trend

Posted by in categories: materials, sustainability

The fashion world is buzzing about a new material that’s changing the game: mushroom leather. Made from mycelium, this innovative textile is taking the industry by storm, offering a sustainable and stylish alternative to traditional leather.

But it’s not just about looking good — this fungal fashion movement is about embracing a more eco-conscious and cruelty-free approach to clothing production.

What makes mushroom leather so remarkable? It all starts with mycelium, the thread-like, dense cellular structure that forms the vegetative part of a fungus.

Nov 21, 2024

2D graphene spin valve leverages van der Waals magnet proximity for efficient spintronics

Posted by in categories: materials, particle physics

Graphene, particularly in its purest form, has long been considered a promising material for developing spintronic devices. These devices leverage the intrinsic angular momentum (i.e., spin), as opposed to the charge, of electrons to transmit and process data.

Nov 21, 2024

ULTIMATE Refractory Alloy Innovations for Superior Efficiency (RAISE)

Posted by in categories: innovation, materials

GE Research has proposed transformational material solutions to potentially enable a gas turbine blade alloy-coating system capable of operating at a turbine inlet temperature of 1800 °C for more than 30,000 hours. GE aims to develop a niobium (Nb)-based alloy that can operate at 1,300 °C (2372 °F), coating system consisting of a novel oxidation resistant bond coat compatible with the new Nb-based alloy, and thermal barrier coating for improved durability that can operate at 1700 °C (3092 °F) and a scalable manufacturing process for producing internally cooled gas turbine blades with the new alloy. Application of the new technologies to existing combined cycle gas turbines in the U.S. could increase the thermal efficiency by approximately 7%.

Nov 20, 2024

Scientists glue two proteins together, driving cancer cells to self-destruct

Posted by in categories: biotech/medical, materials

Our bodies divest themselves of 60 billion cells every day through a natural process of cell culling and turnover called apoptosis.

These cells — mainly blood and gut cells — are all replaced with new ones, but the way our bodies rid themselves of material could have profound implications for cancer therapies in a new approach developed by Stanford Medicine researchers.

They aim to use this natural method of cell death to trick cancer cells into disposing of themselves. Their method accomplishes this by artificially bringing together two proteins in such a way that the new compound switches on a set of cell death genes, ultimately driving tumor cells to turn on themselves. The researchers describe their latest such compound in a paper published Oct. 4 in Science.

Nov 20, 2024

Physicists explain how fractional charge in pentalayer graphene could work

Posted by in categories: materials, physics

MIT physicists have taken a key step toward solving the puzzle of what leads electrons to split into fractions of themselves. Their solution sheds light on the conditions that give rise to exotic electronic states in graphene and other two-dimensional systems.

The new work is an effort to make sense of a discovery that was reported earlier this year by a different group of physicists at MIT, led by Assistant Professor Long Ju. Ju’s team found that appear to exhibit “fractional charge” in pentalayer graphene—a configuration of five that are stacked atop a similarly structured sheet of boron nitride.

Ju discovered that when he sent an electric current through the pentalayer structure, the electrons seemed to pass through as fractions of their total charge, even in the absence of a magnetic field.

Nov 19, 2024

Ion Engines could take us to the Solar Gravitational Lens in less than 13 years, suggests paper

Posted by in categories: materials, space travel

Sending an object to another star is still the stuff of science fiction. But some concrete missions could get us at least part way there. These “interstellar precursor missions” include a trip to the solar gravitational lens point at 550 AU from the sun—farther than any artificial object has ever been, including Voyager.

To get there, we’ll need plenty of new technologies, and a recent paper presented at the 75th International Astronautical Congress in Milan this month looks at one of those potential technologies—electric propulsion systems, otherwise known as ion drives.

The paper aimed to assess when any existing ion drive technology could port a large payload on one of several trajectories, including a trip around Jupiter, one visiting Pluto, and even one reaching that fabled solar gravitational lens. To do so, they specified an “ideal” ion drive with characteristics that enabled optimal values for some of the system’s physical characteristics.

Nov 19, 2024

Nanoplastics may lead to the development of antibiotic resistance

Posted by in categories: biotech/medical, materials

Minuscule particles of plastic are not only bad for the environment. A study led from Umeå University, Sweden, has shown that the so-called nanoplastics which enter the body also can impair the effect of antibiotic treatment. The results also indicate that the nanoplastics may lead to the development of antibiotic resistance. Even the indoor air in our homes contains high levels of nanoplastics from, among other things, nylon, which is particularly problematic.

The results are alarming considering how common nanoplastics are and because effective antibiotics for many can be the difference between life and death,” says Lukas Kenner, professor at the Department of Molecular Biology at Umeå University and one of the researchers who led the study.

Nanoplastics are plastic particles that are smaller than a thousandth of a millimetre. Due to their smallness, they can float freely in the air and have the ability to enter the body.

Nov 17, 2024

Highly homogeneous zero-index metamaterials make devices more compact and perform better

Posted by in categories: computing, materials

Transparent ceramic infinite speed computer.


Jiang, WX. Highly homogeneous zero-index metamaterials make devices more compact and perform better. Light Sci Appl 13, 104 (2024). https://doi.org/10.1038/s41377-024-01458-6

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Nov 17, 2024

Patients’ own blood could be used to help repair broken bones, study suggests

Posted by in categories: biotech/medical, materials

A patient’s own blood could be used to help create a material potentially capable of repairing their broken bones, new research suggests.

Scientists have transformed blood into a substance which successfully repaired bones in animals, paving the way for personalised 3D-printed implants.

They suggest the new material has the potential to create regenerative blood products that could be used as effective therapies to treat injury and disease.

Nov 16, 2024

Scientists achieve first-ever elusive quantum spin liquid phenomenon

Posted by in categories: materials, quantum physics

This behavior is driven by quantum entanglement, a phenomenon where the fates of individual electrons become intertwined.

Scientists have developed theoretical models describing quantum spin liquids for many years. However, creating these materials in a laboratory setting has been a challenge.

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