Articles by Sam Jarman
Tech Xplore / Atom-thin material could overcome key transistor bottleneck for next-generation computer chips
If computer chips could be built from semiconductors just one atom thick, they could pack far more transistors into a smaller space while using less power. So far, however, the technology has been held back by the weakness ...
Phys.org / Visible light does not speed up water evaporation, rigorous experiments suggest
In recent experiments involving hydrogels and water droplets, researchers have proposed that exposure to visible light could make water evaporate faster without heating it. However, direct evidence that light acts on water ...
Phys.org / Hidden 'funnels' let complex systems slip between stable states
Many systems in nature can settle into several different stable states, with the final state depending on their starting conditions. However, the boundaries separating these states are often far more complicated than they ...
Phys.org / Laser-made muons produce first images of dense objects
Muons are constantly being created as cosmic rays collide with molecules in Earth's upper atmosphere. With their ability to penetrate far into dense, solid materials, these cosmic muons are often used to image the insides ...
Phys.org / Peeling crust beneath Italy's Apennines may explain why mountains stretch and squeeze
Extending some 1,200 kilometers (750 miles) along the length of Italy, the Apennine Mountains present a challenging puzzle for geologists. In some places, the mountains are steadily being stretched apart, while in regions ...
Phys.org / DarkSide detector puts 'nuclear' dark matter to the test
Researchers at the DarkSide collaboration have unveiled results from a seven-year experiment that tested whether dark matter particles could exist as composites of smaller, elementary particles. While the search turned up ...
Phys.org / Whirlpool in a water tank reveals long-predicted wave turbulence
When water drains from a bathtub, a whirlpool often forms above the drain, and its narrow core can start to wobble and twist. For almost 150 years, physicists have predicted that these wobbles can become turbulent, passing ...
Phys.org / Carbon nanotube foams reveal a new kind of mechanical memory
In their earliest years of development, computers used mechanical gears and levers to store information. Today, researchers are exploring whether a material itself can hold onto information, storing memory in how it bends ...
Phys.org / Nuclear-spin swap extends room-temperature entanglement lifetime up to 240-fold
Researchers in China have extended the lifetime of entanglement in a room-temperature, solid-state system by up to a factor of 240. Led by Shuo Ren and Rui-Jian Liang at the University of Science and Technology of China in ...
Phys.org / Asteroid Ryugu's dust reveals nitrogen's slow concentration into complex molecules
Nitrogen is a key ingredient in the biomolecules that form the building blocks of life. Yet as an unbonded gas, it is far more likely to drift into space than to lock itself into solid compounds, making it difficult for astronomers ...
Phys.org / A new game demonstrates quantum advantage with provable classical limits
For decades, physicists have worked to prove the strange predictions of quantum mechanics with real experiments. As quantum computers have grown more powerful, researchers have devised increasingly sophisticated ways to test ...
Phys.org / Entangled particles revive a 35-year-old test of the Standard Model
Physicists at the BESIII Collaboration have breathed new life into a decades-old test of one of the Standard Model's most important ideas, using a technique that had gone almost untouched by experimenters for 35 years.
Phys.org / Betelgeuse's atmosphere is becoming spotty and asymmetric—and a nearby companion could be shaping the pattern
For the first time since its dramatic dimming in 2020, a team of astronomers has observed the inner atmosphere of Betelgeuse using the Atacama Large Millimeter Array (ALMA). Led by Bill Dent at the University of Manchester, ...
Phys.org / The biggest black hole merger ever observed could be less massive than it appears
Gravitational waves are ripples in spacetime created when pairs of black holes spiral into each other and eventually merge. But if this ripple has been warped by another massive object on its way to Earth, a new analysis ...
Phys.org / Physicists test the weak equivalence principle in an orbiting space station
The weak equivalence principle (WEP) is central to Einstein's general relativity. It posits that gravity must accelerate everything equally, regardless of what it is made from. For the first time, a team led by Ming-Sheng ...