title: Note: Buoyant-force assisted liquid membrane electrochemical etching for nano-tip preparation.
abstract: A liquid membrane electrochemical etching process for preparing nano-tips is proposed by the introduction of buoyant force to the lower tip, in which the lower portion of the anodic wire is immersed into a floating layer. A mathematical model of this method is derived. Both calculation and experimental results demonstrate that the introduction of buoyant force can significantly decrease the tip radius. The lubricating oil and deionized water floating layers were tested for the processing of nano-tips. Further, high-aspect-ratio nano-electrodes were prepared by applying a relative vertical movement to the anodic wire.
authors.affiliation: Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.
authors.forename: Yongbin
authors.initials: Y
authors.lastname: Zeng
authors.affiliation: Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Wu
authors.affiliation: Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.
authors.forename: Kun
authors.initials: K
authors.lastname: Xu
authors.affiliation: Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China.
authors.forename: Ningsong
authors.initials: N
authors.lastname: Qu
mesh_terms: D004867:Equipment Design; D008839:Microelectrodes; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D009821:Oils; D014867:Water
chemical_list: D009821:Oils; D014867:Water