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40 articles from PhysOrg

Predicting human group sizes with physics

Only by knowing the average number of friends each person has, scientists at Complexity Science Hub (CSH) were able to predict the group sizes of people in a computer game. For this purpose, they modeled the formation of social groups on an example from physics, namely the self-organization of particles with spin.

AI: World likely to hit key warming threshold in 10-12 years

The world will likely breach the internationally agreed-upon climate change threshold in about a decade, and keep heating to break through a next warming limit around mid-century even with big pollution cuts, artificial intelligence predicts in a new study that's more pessimistic than previous modeling.

Powering wearable technology with MXene textile supercapacitor 'patch'

Researchers at Drexel University are one step closer to making wearable textile technology a reality. Recently published in the Journal of Materials Chemistry A, materials scientists from Drexel's College of Engineering, in partnership with a team at Accenture Labs, have reported a new design of a flexible wearable supercapacitor patch. It uses MXene, a material discovered at Drexel University in...

Solid material that 'upconverts' visible light photons to UV light photons could change how we utilize sunlight

The importance of solar power as a renewable energy resource is increasing. Sunlight contains high-energy UV light with a wavelength shorter than 400 nm, which can be broadly used, for example, for photopolymerization to form a resin and activation of photocatalysts to drive reactions that generate green hydrogen or useful hydrocarbons (fuels, sugars, olefins, etc.). The latter of these is often...

Mie voids could bring about control of light in air

Resonant optical phenomena in metals and dielectrics have profound applications in many fields. The nanoscale confinement allows for unpreceded control of light-matter interaction at surfaces and interfaces, manipulating and controlling the light flow. Resonant phenomena are usually associated with radiative and intrinsic loss channels, which are detrimental in many systems. Metals show strong...

How a novel class of sulfonamides potently blocks malaria transmission

Malaria is a devastating disease, with 247 million cases and 619,000 deaths reported in 2021 alone. Malaria causes fever and a flu-like illness that occurs when people are infected with the parasite Plasmodium falciparum, which is spread by mosquitoes. Drugs to treat malaria symptoms and insecticides to kill malaria-spreading mosquitoes have improved in recent decades, but the parasite and the...

Political orientation could be predicted by differences in brain activation and synchronization

A first-of-its-kind study scanned the brains of dozens of politically involved participants while they watched campaign-ads and speeches by parties from both ends of the political spectrum, just before one of the last rounds of elections. The participants, half right-wing and half left-wing, were scanned using magnetic resonance imaging (fMRI), a method that measures brain activation.

Climate tipping: West Antarctica ice sheet collapse may stabilize North Atlantic currents

It has been hypothesized, that the tipping of one element of the Earth's system can catalyze the tipping of others in a cascade. A study gives an example of an alternative option, in which the collapse of one component might in fact make another system tipping less likely. In particular, the study indicates that tipping of the West Antarctica ice sheet may stabilize the important ocean current...