title: Friction of water slipping in carbon nanotubes.
abstract: Liquid slip is essential in nanofluidic systems, as shrinking channel size leads to a dramatic increase in flow resistance and thus high-energy consumption for driving nonslip flow. Using large-scale nonequilibrium molecular dynamics simulation of water flowing in carbon nanotubes (CNT's), we show that the relationship between the CNT wall-water interfacial friction stress and slip velocity follows a transition-state-theory-based inverse hyperbolic sine function, which remains universally valid regardless of wetting properties, CNT chiralities, and CNT sizes, and holds for all slip velocities from 0 to 1400 m/s. The finding could benefit the research in desalination and other chemical purification techniques.
authors.affiliation: Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China.
authors.forename: Ming D
authors.initials: MD
authors.lastname: Ma
authors.forename: Luming
authors.initials: L
authors.lastname: Shen
authors.forename: John
authors.initials: J
authors.lastname: Sheridan
authors.forename: Jefferson Zhe
authors.initials: JZ
authors.lastname: Liu
authors.forename: Chao
authors.initials: C
authors.lastname: Chen
authors.forename: Quanshui
authors.initials: Q
authors.lastname: Zheng