Note: Electrochemical etching of cylindrical nanoprobes using a vibrating electrolyte

Yufeng Wang; Yongbin Zeng; Ningsong Qu; Di Zhu

doi:10.1063/1.4926457

Note: Electrochemical etching of cylindrical nanoprobes using a vibrating electrolyte

Rev Sci Instrum. 2015 Jul;86(7):076103. doi: 10.1063/1.4926457.

Authors

Yufeng Wang¹, Yongbin Zeng¹, Ningsong Qu¹, Di Zhu¹

Affiliation

¹ College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

PMID: 26233417
DOI: 10.1063/1.4926457

Abstract

An electrochemical etching process using a vibrating electrolyte of potassium hydroxide to prepare tungsten cylindrical nanotips is developed. The vibrating electrolyte eases the effects of a diffusion layer and extends the etching area, which aid in the production of cylindrical nanotips. Larger amplitudes and a vibration frequency of 35 Hz are recommended for producing cylindrical nanotips. Nanotips with a tip radius of approximately 43 nm and a conical angle of arctan 0.0216 are obtained.