Single and multiple pin(s)-to-liquid discharges: connecting self-organization patterns and ROS production in liquids for plasma agronomy application

TL;DR

This paper studies pin-to-liquid discharges to understand their self-organization patterns and reactive species production, aiming to optimize plasma-activated liquids for agricultural use, demonstrated through effects on lentil seeds.

Contribution

It links self-organization patterns in pin-to-liquid discharges with reactive species generation, advancing plasma agronomy applications.

Findings

Discharges produce reactive species like H2O2, NO2-, and NO3- in liquids.

Modulating air interaction enhances reactive species production.

Plasma-activated liquids positively affect lentil seed growth.

Abstract

Pin-to-liquid discharges are investigated for the activation of liquids dedicated to agriculture applications. They are characterized through their electrical and optical properties, with a particular attention paid to their filaments and self-organized patterns occurring at the liquid interface. We show how modulating their interaction with ambient air can promote the production of reactive species in liquids such as H2O2, NO2- and NO3-. The effects of the resulting plasma activated media are reported on lentils seeds.