Toggling Bistable Atoms via Mechanical Switching of Bond Angle
Toggling Bistable Atoms via Mechanical Switching of Bond Angle
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DOI：
10.1103/physrevlett.106.136101
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发表时间：
2011-03-28
影响因子：
8.6
通讯作者：
Moriarty, Philip
中科院分区：
文献类型：
--
作者：
Sweetman, Adam;Jarvis, Sam;Moriarty, Philip
我们利用动态力显微镜，通过直接机械操纵键角，实现了原子态的可逆转换。在Si（100）表面的单个屈曲二聚体通过形成单个共价键而翻转，仅通过化学力驱动最小的可想象的面内拨动开关（两个原子）。一个给定的二聚体的翻转事件的响应取决于关键的本地和非本地环境的目标原子未来的原子尺度的制造策略的一个重要考虑。
We reversibly switch the state of a bistable atom by direct mechanical manipulation of bond angle using a dynamic force microscope. Individual buckled dimers at the Si(100) surface are flipped via the formation of a single covalent bond, actuating the smallest conceivable in-plane toggle switch (two atoms) via chemical force alone. The response of a given dimer to a flip event depends critically on both the local and nonlocal environment of the target atom-an important consideration for future atomic scale fabrication strategies.