Autonomous pump against concentration gradient

被引：7

作者：

Xu, Zhi-cheng ^{[1
]}

Zheng, Dong-qin ^{[1
]}

Ai, Bao-quan ^{[2
,3
]}

Zhong, Wei-rong ^{[1
]}

机构：

[1] Jinan Univ, Dept Phys, Guangzhou Key Lab Vacuum Coating Technol & New En, Siyuan Lab, Guangzhou 510632, Guangdong, Peoples R China

[2] S China Normal Univ, Lab Quantum Engn & Quantum Mat, ICMP, Guangzhou 510006, Guangdong, Peoples R China

[3] S China Normal Univ, Lab Quantum Engn & Quantum Mat, SPTE, Guangzhou 510006, Guangdong, Peoples R China

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

中国国家自然科学基金;

关键词：

MOLECULAR-DYNAMICS SIMULATION; CARBON NANOPORES; WATER-MOLECULES; TRANSPORT; SEPARATION; DIFFUSION; ENERGY; GASES; FIELD; FLOW;

D O I：

10.1038/srep23414

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Using non-equilibrium molecular dynamics and Monte Carlo methods, we have studied the molecular transport in asymmetric nanochannels. The efficiency of the molecular pump depends on the angle and apertures of the asymmetric channel, the environmental temperature and average concentration of the particles. The pumping effect can be explained as the competition between the molecular force field and the thermal disturbance. Our results provide a green approach for pumping fluid particles against the concentration gradient through asymmetric nanoscale thin films without any external forces. It indicates that pumping vacuum can be a spontaneous process.

引用

页数：8

共 35 条

[31] Static charges cannot drive a continuous flow of water molecules through a carbon nanotube [J].