العلوم والبيئة
A new twist on 'magic-angle' graphene: Tuning resistance with strain
المصدر: Phys.org - latest science and technology news stories · نُشر
In materials science labs around the world, researchers regularly reproduce a peculiar experiment. Under a microscope, they use tiny robotic manipulators to lay two sheets of carbon, each a single atom thick, against one another. They then rotate the top sheet against the bottom.
In materials science labs around the world, researchers regularly reproduce a peculiar experiment. Under a microscope, they use tiny robotic manipulators to lay two sheets of carbon, each a single atom thick, against one another. They then rotate the top sheet against the bottom.
The two identical lattices of atoms, when twisted relative to one another, bloom into a complex moiré pattern, a shifting complex of honeycomb shapes that grow and shrink as the angle between the layers changes.
أخبار ذات صلة
Secret to selling small plates at restaurants: Nonrounded pricing
Oh, what a difference a penny can make in the likelihood that restaurant customers will order a small plate.
Phys.org - latest science and technology news stories ·
Talking or just meowing? Food test suggests cats call for human attention
As any cat owner knows, their feline companion is the boss of the home, and their meows are one way to get attention. But are those noises actually an attempt to communicate with us, or simply an expression of how the cat feels?
Phys.org - latest science and technology news stories ·
Imperfections reveal unexpected links between light and atomic vibrations in ultrathin boron nitride
First, one person stands up, followed by their neighbors, one after another, until a wave sweeps through the stadium. Atoms within a material move in a similar way: rather than remaining completely still in their positions, they vibrate together around their respective positions.
Phys.org - latest science and technology news stories ·
Zn doping reveals robust two-gap superconductivity in FeSe
Researchers using the Steady High Magnetic Field Facility have found that zinc doping unexpectedly alters the superconducting properties of iron selenide (FeSe) while preserving its two-gap superconducting state.
Phys.org - latest science and technology news stories ·
Sensors on buses and trams could make air quality measurements fairer
As cities invest increasingly in quality of life and tackling air pollution, accurate environmental monitoring is high on the agenda. To identify health risks posed by, for example, particulate matter and nitrogen dioxide, Dutch cities have traditionally relied on fixed monitorin
Phys.org - latest science and technology news stories ·