title: Current inversions induced by resonant coupling to surface waves in a nanosized water pump.
abstract: We conducted a molecular dynamics simulation to investigate current inversions in a nanosized water pump based on a single-walled carbon nanotube powered by mechanical vibration. It was found that the water current depended sensitively on the frequency of mechanical vibration. Especially in the resonance region, the nanoscale pump underwent reversals of the water current. This phenomenon was attributed to the dynamics competition of the water molecules in the two sections (the left and right parts) divided by the vibrating atom and the differences in phase and decay between the two mechanical waves generated by mechanical vibration and propagating in opposite directions toward the two ends of the carbon nanotube. Our findings provide an insight into water transportation through nanosized pumps and have potential in the design of high-flux nanofluidic systems and nanoscale energy converters.
authors.affiliation: Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China.|Department of Physics, Zhejiang Normal University, Jinhua 321004, China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China.|Department of Physics, Zhejiang Normal University, Jinhua 321004, China.
authors.forename: Fengmin
authors.initials: F
authors.lastname: Wu
authors.affiliation: Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Physics, Zhejiang Normal University, Jinhua 321004, China.
authors.forename: Jianlong
authors.initials: J
authors.lastname: Kou
authors.affiliation: Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
authors.forename: Hui
authors.initials: H
authors.lastname: Lu
authors.affiliation: Department of Physics, Zhejiang Normal University, Jinhua 321004, China.|Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
authors.forename: Hangjun
authors.initials: H
authors.lastname: Lu