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When it comes to early detection of cognitive impairment, a new study suggests that the nose knows. Researchers from Mass General Brigham have developed olfactory tests—in which participants sniff odor labels that have been placed on a card—to assess people’s ability to discriminate, identify and remember odors. They found that participants could successfully take the test at home and that older adults with cognitive impairment scored lower on the test than cognitively normal adults.

Results are published in Scientific Reports.

“Early detection of cognitive impairment could help us identify people who are at risk of Alzheimer’s disease and intervene years before memory symptoms begin,” said senior author Mark Albers, MD, Ph.D., of the Laboratory of Olfactory Neurotranslation, the McCance Center for Brain Health, and Department of Neurology at Massachusetts General Hospital.

A waste gum produced by trees found in India could be the key to unlocking a new generation of better-performing, more eco-friendly supercapacitors, researchers say.

Scientists from universities in Scotland, South Korea and India are behind the development, which harnesses the unique properties of the otherwise useless tree gum to prevent supercapacitors from degrading over tens of thousands of charging cycles.

The team’s finding could help reduce the environmental impact of supercapacitors, an energy storage technology which carry less overall power than conventional batteries but charge and discharge much more quickly.

Physicists have discovered that electronic excitations in 2D magnets can interact through spin waves – ripples in a material’s magnetic structure.

This breakthrough allows excitons (electron-hole pairs) to influence one another indirectly, like objects disturbing water. The interaction, demonstrated in a magnetic semiconductor called CrSBr, can be toggled on and off with magnetic fields, opening doors to revolutionary technologies like optical modulators, logic gates, and especially quantum transducers for future quantum computers and communication systems.

Discovery Unlocks Spin-Wave Mediated Interactions.

A study from Technion unveils a newly discovered form of quantum entanglement in the total angular momentum of photons confined in nanoscale structures. This discovery could play a key role in the future miniaturization of quantum communication and computing components.

Quantum physics sometimes leads to very unconventional predictions. This is what happened when Albert Einstein and his colleagues, Boris Podolsky and Nathan Rosen (who later founded the Faculty of Physics at Technion), found a scenario in which knowing the state of one particle immediately affects the state of the other particle, no matter how great the distance between them. Their historic 1935 paper was nicknamed EPR after its three authors (Einstein–Podolsky–Rosen).

The idea that knowing the state of one particle will affect another particle located at a huge distance from it, without physical interaction and information transfer, seemed absurd to Einstein, who called it “spooky action at a distance.”

In a new Nature Physics study, researchers have provided evidence of universal conformal invariance in living biological cells. They show that a universal feature in the collective behavior emerges in groups of living cells.

The researchers studied four to find evidence of universal conformal invariance. Despite being separated by billions of years of evolution, the researchers found that all four systems generated vortex-like flow patterns with identical statistical properties.

Phys.org spoke to one of the study’s co-authors, Dr. Amin Doostmohammadi, an Associate Professor at the University of Copenhagen.