Sentences with phrase «poised over a sheet»
When the sharp tip of the STM is poised over a sheet of graphene, it produces a circular barrier on the sheet that «acts as a perfect curved mirror» for electrons, Levitov says, reflecting them along the curved surface until they begin to interfere with themselves.
https://www.sciencedaily.com/ Not exact matches
A new analysis of the dramatic cycles of ice ages and warm intervals over the past million years, published in Nature, concludes that the climatic swings are the gyrations of a system poised to settle into a quasi-permanent colder state — with expanded ice sheets at both poles.