纳米结构
扫描隧道显微镜
超分子化学
纳米技术
材料科学
纳米尺度
激发
量子隧道
极性(国际关系)
分子
光电子学
物理
化学
生物化学
量子力学
细胞
作者
Anja Nickel,Robin Ohmann,Joerg Meyer,Maricarmen Grisolía,Christian Joachim,Francesca Moresco,Gianaurelio Cuniberti
出处
期刊:ACS Nano
[American Chemical Society]
日期:2012-12-11
卷期号:7 (1): 191-197
被引量:57
摘要
For the development of nanoscale devices, the manipulation of single atoms and molecules by scanning tunneling microscopy is a well-established experimental technique. However, for the construction of larger and higher order structures, it is important to move not only one adsorbate but also several at the same time. Additionally, a major issue in standard manipulation experiments is the strong mechanical interaction of the tip apex and the adsorbate, which can damage the system under investigation. Here, we present a purely electronic excitation method for the controlled movement of a weakly interacting assembly of a few molecules. By applying voltage pulses, this supramolecular nanostructure is moved in a controlled manner without losing its collective integrity. Depending on the polarity and location of the applied voltage, the movement can be driven in predefined directions. Our gentle purely electronic approach for the controlled manipulation of nanostructures opens new ways to construct molecular devices.
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