Scientists discovered a new Hall effect driven by spin currents in noncollinear antiferromagnets, offering a path to more efficient and resilient spintronic devices.
A research team led by Colorado State University graduate student Luke Wernert and Associate Professor Hua Chen has identified a previously unknown type of Hall effect that could lead to more energy-efficient electronic devices.
Their study, published in Physical Review Letters.
The exponential miniaturization of electronic chips over time, described by Moore’s law, has played a key role in our digital age. However, the operating power of small electronic devices is significantly limited by the lack of advanced cooling technologies available.
Aiming to tackle this problem, a study published in Cell Reports Physical Science, led by researchers from the Institute of Industrial Science, The University of Tokyo, describes a significant increase in performance for the cooling of electronic chips.
The most promising modern methods for chip cooling involve using microchannels embedded directly into the chip itself. These channels allow water to flow through, efficiently absorbing and transferring heat away from the source.
KIMS has developed the world’s first highly flexible and ultra-sensitive ammonia sensor technology, utilizing a low-temperature synthesized copper bromide film. A research team from the Energy & Environmental Materials Research Division at the Korea Institute of Materials Science (KIMS), led
ToddyCat exploits ESET’s CVE-2024–11859 flaw with TCESB malware, bypassing security tools via DLL hijacking.
DARPA is using Earth’s atmosphere as a powerful sensor, allowing the detection of events like rocket reentries and illicit detonations.
The gene encoding an enzyme from a firefly, discovered at the Sorocaba campus of the Federal University of São Carlos (UFSCar) in Brazil, has given rise to a biosensor capable of detecting pH changes in mammalian cells—which could be useful, for example, in studying diseases and assessing the toxicity of a drug candidate.
The luciferase from the species Amydetes vivianii changes color from bluish-green to yellow and red as acidity decreases in fibroblasts, the most common cell type in connective tissue. It does so with great intensity and stability, something that had not been achieved with other luciferases tested by the research group.
The work is published in the journal Biosensors.
Twisted moiré photonic crystals—an advanced type of optical metamaterial—have shown enormous potential in the race to engineer smaller, more capable and more powerful optical systems. How do they work?
Imagine you have two pieces of fabric with regular patterns, like stripes or checkers. When you lay the two pieces of fabric directly on top of each other, you can see each pattern clearly. But if you slightly shift one piece of fabric or twist it, new patterns that weren’t in either of the original fabrics emerge.
In twisted moiré photonic crystals, how the layers twist and overlap can change how the material interacts with light. By changing the twist angle and the spacing between layers, these materials can be fine-tuned to control and manipulate different aspects of light simultaneously—meaning the multiple optical components typically needed to simultaneously measure light’s phase, polarization, and wavelength could be replaced with one device.
A new method produces PEDOT nanofibers with enhanced electrical conductivity and increased surface area for improved charge storage. UCLA chemists have developed a new textured, fur-like version of PEDOT, a conductive plastic commonly used to protect electronics from static and in devices like so
Imagine walking into your kitchen and instantly knowing if the fish you bought yesterday is still fresh—or entering an industrial site with sensors that immediately alert you to hazardous gas leaks. This isn’t science fiction—it’s the promise behind our newly developed nanomechanical sensor array, a powerful tool we’ve created to detect and analyze complex gases in real-time.
In our recent study published in Microsystems & Nanoengineering, we introduce a miniaturized array of silicon and polymer-based sensors capable of detecting various gases quickly and accurately.
This array utilizes a simple yet ingenious principle: when gas molecules enter the sensor, they diffuse into specific polymers, causing them to swell slightly. This swelling generates mechanical stress detected by tiny piezoresistive sensors embedded in silicon. It’s like watching a sponge expand as it absorbs water—but at a microscopic scale, with the expansion measured electrically to detect and identify gases.
