Selective Conduction of Organic Molecules via Free-Standing Graphene
arXiv:2009.07440 · doi:10.1021/acs.jpcc.9b04131
Abstract
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.
arXiv comment5 figures
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- Dramatic effect of a transverse electric field on frictional properties of graphene
- Catalytic role of HI in the interstellar synthesis of complex organic molecule
- Density Functional Theory Calculations on the Interstellar Formation of Biomolecules
- Gear Junctions between Chiral Boron Nitride Nanotubes
- Trapping molecules in a covalent graphene-nanotube hybrid
- Low-Temperature Friction of Suspended Graphene: Negative friction?