Researchers at the University of Würzburg have succeeded in detecting exceptionally robust electrical transport in a topological insulator. This could lead to new metrological applications. The work is published in the journal Nature Communications.

Metrology is the science of measurement. Its aim is to ensure that measurement results are comparable and reliable worldwide, for example, in industry or scientific experiments. So-called fundamental constants, or unchanging physical quantities such as the speed of light or Planck’s constant, play an increasingly important role in this context.

As their values are universal, i.e., independent of place and time, they enable the definition of highly stable units and ensure highly reproducible measurement results. Since 2019, the International System of Units, SI (short for Système international d’unités), has been based entirely on these constants.

NodeBB fixes eight flaws Aikido rates high severity, including bugs exposing admin pages, private messages, and federation content to outsiders.

CERT-UA links UAC-0099 to a fake Notepad++ plugin that deploys BURNYBEAR and MATCHBOIL.V2, with persistence running every three minutes on Windows.

Microsoft is impacted by a massive outage affecting Teams and Microsoft 365 services, primarily affecting users in North America.

Imagine a parasite that makes you live up to 10 times longer than you naturally would – while also inspiring others to treat you like royalty.

It sure seems like a pretty good deal, but of course there’s a catch.

The parasite just wants to keep you lazy so you’ll be easy pickings for a giant predator – the bowels of which are the parasite’s preferred breeding ground.

Star WOH G64 could be about to explode, and its extreme transition offers a rare opportunity to witness stellar transformations in real time.

Social networks, intended to bring people together, can actually increase polarization, new research finds, because while the links in the network may be plentiful, they’re probably weak. A research team including Cornell sociologist Michael Macy has found that while the growing number of international contacts enabled by modern communications technologies may indeed contribute to greater polarization, as shown in previous studies, the underlying mechanism does not necessarily depend on an increase in close friendships. Instead, weaker social ties appear to play a more significant role, as they are more likely to foster hierarchical structures shaped by social status.

“The most important argument in our paper is the polarizing effect of ‘status-driven dynamics’ involving weak ties,” said Macy, with “status” referring to whether an individual holds another in high or low esteem. “The importance lies in the distinction between structural and ideological polarization.”

A light-controlled meta-surface redirected another beam at femtosecond speeds without relying on slower electronic relaxation.