title: Note: Axially pull-up electrochemical etching method for fabricating tungsten nanoprobes with controllable aspect ratio.
abstract: A mathematical model representing the relation between pulling up speed, time and aspect ratio is reported, accordingly the axially pull-up electrochemical etching method for fabricating nanoprobes is proposed. The tungsten probes with predetermined shape and aspect ratio according to the model were successfully produced with this method. Then the probes were installed inside a micromanipulation system to manipulate the carbon nanotubes and measure their current-voltage (I-V) characteristics. The probe fabrication and application experiments demonstrated the reasonability and reliability of the model and method developed in this note.
authors.affiliation: School of Materials Science and Engineering, Tianjin University, Tianjin 300072, People's Republic of China.
authors.forename: Chao-Ling
authors.initials: CL
authors.lastname: Li
authors.forename: Dong-Yu
authors.initials: DY
authors.lastname: Fang
authors.forename: Xuan
authors.initials: X
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Xue
authors.forename: Pei
authors.initials: P
authors.lastname: Yao