Self-retracting motion of graphite microflakes.
Self-retracting motion of graphite microflakes.
复制标题
DOI：
10.1103/physrevlett.100.067205
复制
发表时间：
2007-09
影响因子：
8.6
通讯作者：
Q. Zheng;BoZhi Jiang;Shoupeng Liu;Y. Weng;Lina Lu;Q. Xue;Jing Zhu;Q. Jiang;Sheng Wang
中科院分区：
文献类型：
--
作者：
Q. Zheng;BoZhi Jiang;Shoupeng Liu;Y. Weng;Lina Lu;Q. Xue;Jing Zhu;Q. Jiang;Sheng Wang
我们报告观察到一种新的现象，石墨的自收缩运动，其中微小的石墨片，在被移位到各种悬浮位置后，从高度定向的热解石墨的岛屿，在没有外部影响的情况下回缩到岛屿上。在任何种类的单晶的文献中还没有发现这种现象的报道。模型，包括货车范德华力，静电力和剪切强度被认为是解释所观察到的现象。这些发现可能有助于创造具有从兆赫到千兆赫的广泛机械频率的纳机电系统。
We report the observation of a novel phenomenon, the self-retracting motion of graphite, in which tiny flakes of graphite, after being displaced to various suspended positions from islands of highly orientated pyrolytic graphite, retract back onto the islands under no external influences. Reports of this phenomenon have not been found in the literature for single crystals of any kind. Models that include the van der Waals force, electrostatic force, and shear strengths were considered to explain the observed phenomenon. These findings may conduce to create nanoelectromechanical systems with a wide range of mechanical frequency from megahertz to gigahertz.