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Related Experiment Video

Updated: Oct 21, 2025

Treating Surfaces with a Cold Atmospheric Pressure Plasma using the COST-Jet

Treating Surfaces with a Cold Atmospheric Pressure Plasma using the COST-Jet

Published on: November 2, 2020

Non-thermal plasma multi-jet platform based on a flexible matrix.

Carles Corbella¹, Sabine Portal¹, Li Lin¹

¹Department of Mechanical and Aerospace Engineering, George Washington University, 800 22nd Street, Northwest, Washington, DC 20052, USA.

The Review of Scientific Instruments

|September 2, 2021

Summary

A novel plasma source combines dielectric barrier discharge and cold atmospheric plasma jet features using a silica aerogel matrix. This adaptable multi-jet system shows promise for biomedical applications like wound healing and cancer surgery.

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Treating Surfaces with a Cold Atmospheric Pressure Plasma using the COST-Jet

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Area of Science:

Plasma Physics
Materials Science
Biomedical Engineering

Background:

Dielectric barrier discharge (DBD) and cold atmospheric plasma jets (CAPJ) are established plasma generation techniques.
Existing plasma sources often lack flexibility for treating complex surfaces or delicate biological samples.

Purpose of the Study:

To introduce a novel plasma source design merging DBD and CAPJ characteristics.
To investigate the performance and potential applications of this new multi-jet plasma system.

Main Methods:

A flexible silica aerogel matrix was integrated between biased electrodes for a capacitive DBD system.
Helium gas flow was subjected to a 5 kV, 15 kHz sinusoidal voltage, generating plasma jets.
Electrical characterization (current-voltage waveforms) and optical emission spectroscopy were employed for diagnostics.

Main Results:

The plasma source generated multiple jets propagating over 1 cm beyond the active dielectric barrier discharge region.
The system demonstrated laminar flow and adaptability for treating 3D objects and large areas.
Characterization confirmed the plasma composition and operational parameters through the aerogel layer.

Conclusions:

The novel plasma source offers a unique combination of DBD and CAPJ properties.
Its adaptable multi-jet configuration is suitable for versatile surface treatments.
The source shows significant potential for advanced biomedical applications, including wound healing and plasma-based cancer surgery.