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以双壁碳纳米管作为基本单元设计了一种新型纳米机械水泵,其内管固定作为水分子通道,外管做活塞式轴向运动.分子动力学计算表明,水分子净通量及管内水分子电偶极矩分布均与外管运动速率有强烈耦合效应.该设计可以实现水分子的高效单向运输,且输运效率可以通过外管活塞运动的速率进行调控.这些发现可为未来实用纳米分子泵器件的设计提供新的思路.
A new type of nano-mechanical pump was designed with double-walled carbon nanotubes (CNTs) as the basic unit, the inner tube of which was fixed as a water channel and the outer tube of which was an axial piston. Molecular dynamics calculations showed that the net flux of water molecule The molecular dipole moment distribution has a strong coupling effect with the moving velocity of the outer tube. This design can realize efficient one-way transport of water molecules and the transport efficiency can be regulated by the rate of piston movement of the outer tube. These findings may be useful in the future Nano-molecular pump device design provides a new idea.