Ultrapure copper for an ultrasensitive dark matter detector

In February and March, three batches of copper plates arrived at Fermilab and were rushed into storage 100 meters underground. The copper had been mined in Finland, rolled into plates in Germany and shipped across land and ...

Researchers form ultra-strong coupling between photons and atoms

ITMO University researchers have demonstrated that individual atoms can be transformed into polaritons—quantum particles that are a mixture of matter and light, which are transmitted via optical fibers. In this new state ...

Weak equivalence principle violated in gravitational waves

The Weak equivalence principle (WEP) is a key aspect of classical physics. It states that when particles are in freefall, the trajectories they follow are entirely independent of their masses. However, it is not yet clear ...

Single-atom alloy: Superb cocatalyst for photocatalysis

Photocatalysis, converting solar energy into chemical energy, has been recognized to be a very promising solution to current energy and environmental issues. The performance of the photocatalytic system depends largely on ...

Solid-state technology for big data in particle physics

At CERN's Large Hadron Collider, as many as 40 million particle collisions occur within the span of a single second inside the CMS particle detector's more than 80 million detection channels. These collisions create an enormous ...

Why lockdown had little to no effect on global temperatures

Countries across the world took unprecedented action in the first few months of 2020 to control the spread of COVID-19. At its peak, one-third of the world's population was in lockdown. Around the world, car travel fell by ...

Physicists create 3-D printed microboat

From prow to stern, this little boat measures 30 micrometers, about a third of the thickness of a hair. It has been 3-D-printed by Leiden physicists Rachel Doherty, Daniela Kraft and colleagues.

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