科学与环境
A new twist on 'magic-angle' graphene: Tuning resistance with strain
来源: Phys.org - latest science and technology news stories · 发布于
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.
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Sensors on buses and trams could make air quality measurements fairer
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