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Moiré material makes a synaptic transistor for neuromorphic computing
The new device consists of an asymmetric structure made up of two layers of graphene and a layer of hexagonal boron nitride. (Courtesy: Xiaodong Yan, Northwestern University) Researchers at...
View ArticleEvidence grows for deconfined quark matter in neutron-star cores
It is very likely that ultra-dense deconfined quark matter exists in the cores of the most massive neutron stars, according to a study by an international team of physicists. The team led by Aleksi...
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Next-generation 7 T scanner ramps the resolution of brain MR imaging
An ultrahigh-resolution 7 tesla (T) MRI scanner seven years in development can generate functional brain images with 10 times better spatial resolution than current 7 T scanners, and over 180 times...
View ArticleHopfions seen in a magnetic crystal
Researchers have observed three-dimensional magnetic spin structures called hopfions in a naturally-occurring material for the first time. The result could lead to new concepts for spintronics devices...
View ArticleSimple metasurfaces offer control over friction at material interfaces
A new technique for fine-tuning frictional forces at the interfaces between different materials has been developed by researchers in France. Julien Scheibert and colleagues at the University of Lyon...
View ArticleCaution required: anaesthesia with supplemental oxygen can impact proton therapy
Many children who receive proton therapy for brain tumours do so under general anaesthesia or sedation, an approach that guarantees reproducible positioning and targeted delivery of radiation. They may...
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Macrophage-adhering micropatches enable MRI to detect brain inflammation
Comparing the contrast Representative MRI maps of control pigs and pigs with mild traumatic brain injury (mTBI) injected with M-GLAMs or the commercial contrast agent Gadavist. The dotted square...
View ArticleQuantum-secure online shopping comes a step closer
Online shopping boomed during the pandemic, but it remains vulnerable to scams involving both buyers and sellers. Quantum communication could, in principle, add another layer of security, but verifying...
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Focused ultrasound plus plaque-reducing drugs could slow Alzheimer’s progression
Non-invasive low-frequency focused ultrasound (FUS), delivered in combination with intravenously administered microbubbles, can temporarily open the blood–brain barrier (BBB) and enable drugs that...
View ArticleMolecular measuring stick could advance super-resolution microscopy
If you want to measure an everyday object, you might use a ruler – a piece of material with a fixed length and regularly-marked divisions. Thanks to a new device called a PicoRuler, the same...
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Spin supersolid appears in a quantum antiferromagnet
The figure illustrates the adiabatic cooling process of a spin supersolid, as compared to paramagnetic cooling, highlighting the unique features of spin supersolid cooling. The triangular lattice...
View ArticleGraphene-based semiconductor has a useful bandgap and high electron mobility
Researchers in China and the US have created a functional semiconductor made from graphene, a feat that they describe as a first. By expanding on existing fabrication techniques, Walter de Heer and...
View ArticleSnapshot of noble gas atoms emerges from within a graphene sandwich
Scientists at the Universities of Vienna, Austria and Helsinki, Finland have captured the first direct images of clusters of room-temperature noble gas atoms by confining them in a “sandwich” made...
View ArticleHair helps keep us cool in hot weather, infrared study reveals
Hair cools the head in hot weather, while keeping the scalp warm in the cold – according to a new study of how human hair interacts with infrared radiation. The research was done by scientists in South...
View ArticlePhysical forces explain why some COVID variants are more virulent than others
A new study on the mechanical stability of bonds between the spike protein on the SARS-CoV-2 virus and its receptors on human cells during infection has revealed differences in the binding stability of...
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FLASH irradiation spares immune cells during proton therapy
Modelling blood flow in the brain The spatiotemporal propagation of blood (violet) through the vessels (yellow) in the reconstructed brain model. Left to right: the distribution at the start (0.2 s),...
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Machine learning takes hassle out of cold-atom experiments
Cold atoms solve many problems in quantum technology. Want a quantum computer? You can make one from an array of ultracold atoms. Need a quantum repeater for a secure communications network? Cold atoms...
View ArticleDark solitons spotted in ring semiconductor lasers
Dark solitons – regions of optical extinction against bright backgrounds – have been seen spontaneously forming in ring semiconductor lasers. Made by an international team of researchers, the...
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Flexible implant shows potential to restore vision after retinal degeneration
Degenerative diseases of the retina can damage or destroy photoreceptor cells, resulting in severe vision impairment. One promising way to restore lost vision is to implant an electronic retinal...
View ArticleWeathering and ocean burial of rocks could have triggered Earth’s ice ages
Geologists at the Massachusetts Institute of Technology (MIT) in the US have discovered a connection between two important theories of Earth’s long-term climate history. The first is that exposure of...
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