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Two-dimensional atomic crystals

机译:二维原子晶体

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摘要

We report free-standing atomic crystals that are strictly 2D and can be viewed as individual atomic planes pulled out of bulk crystals or as unrolled single-wall nanotubes. By using micromechanical cleavage, we have prepared and studied a variety of 2D crystals including single layers of boron nitride, graphite, several dichal-cogenides, and complex oxides. These atomically thin sheets (essentially gigantic 2D molecules unprotected from the immediate environment) are stable under ambient conditions, exhibit high crystal quality, and are continuous on a macroscopic scale.
机译:我们报告的独立原子晶体严格为2D,可以看作是从块状晶体中拉出的单个原子平面,也可以看作是展开的单壁纳米管。通过使用微机械裂解,我们已经制备和研究了各种2D晶体,包括氮化硼,石墨,几种二卤化合钴和复合氧化物的单层。这些原子薄的薄片(本质上是巨大的2D分子,不受周围环境的保护)在环境条件下稳定,显示出高晶体质量并在宏观范围内连续。

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