Laser guided ionic wind
Shengzhe Du, Tie-Jun Wang, Zhongbin Zhu, Yaoxiang Liu, Na Chen,, Jianhao Zhang, Hao Guo, Haiyi Sun, Jingjing Ju, Cheng Wang, Jiansheng Liu,, See Leang Chin, Ruxin Li, and Zhizhan Xu
TL;DR
This paper introduces a novel method to generate ionic wind using a femtosecond laser-induced plasma filament coupled with an external electric field, enabling remote and electrode-free airflow control.
Contribution
The study demonstrates a new optical technique to produce ionic wind without metallic electrodes, combining laser plasma and electric fields, confirmed by experiments and simulations.
Findings
Ionic wind velocity exceeds 4 m/s.
Wind can be optimized by adjusting electric field and plasma channel.
Method is robust and enables remote ionic wind generation.
Abstract
We report on a method to experimentally generate ionic wind by coupling an external high voltage electric field with an intense femtosecond laser induced air plasma filament. The measured ionic wind velocity could be as strong as >4 m/s. It could be optimized by changing the applied electric field and the laser induced plasma channel. The experimental observation was qualitatively confirmed by a numerical simulation of spatial distribution of the electric field. This technique is robust and free from sharp metallic electrodes for coronas; it opens a way to optically generate ionic wind at a distance.
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