论文标题
通过独立石墨烯选择性传导有机分子
Selective Conduction of Organic Molecules via Free-Standing Graphene
论文作者
论文摘要
在通过分子动力学驱动的石墨烯底物上，在十种有机气体分子之间进行种族。观察到分子的快速传导，对芳族化合物的选择性有选择性。这种选择性源于以下事实：芳香族分子的平面结构有助于保持与基板的距离，这是在气体固定界面处驱动力的关键。漂移速度随着分子密度的降低而单调增加，即使单个分子也无法观察到弹道传输。在大型热梯度下发现了非线性方案，用于传导苯分子。在低温下，分子形成聚集并沿石墨烯基板的特定路径集体移动。
A race is held between ten species of organic gas molecules on a graphene substrate driven by thermal gradients via molecular dynamics. Fast conduction of the molecules is observed with selectivity for aromatic compounds. This selectivity stems from the fact that the planar structure of the aromatic molecule helps keep a shorter distance to the substrate, which is the key to the driving force at the gas-solid interface. The drift velocity monotonically increases with decreasing molecule density, with no ballistic transport observable even for a single molecule. A non-linear regime is discovered for the conduction of benzene molecules under large thermal gradients. At low temperature, molecules formed aggregation and move collectively along specific path in the graphene substrate.
