I don’t think the paper is claiming to be breaking new ground in microwave plasma. Seems like the point is more to nail things down to enable people to do cool plasma research without expensive kit
From the abstract:
> These simple techniques of plasma generation and subsequent surface treatment and modification applications may bring new opportunities leading to new innovations not only in advanced labs, but also in undergraduate and even high school research labs.
One of my coworkers used a setup like this last year to do some cool plasma oxidation studies in his garage with his middle school aged son
From the abstract: > These simple techniques of plasma generation and subsequent surface treatment and modification applications may bring new opportunities leading to new innovations not only in advanced labs, but also in undergraduate and even high school research labs.
One of my coworkers used a setup like this last year to do some cool plasma oxidation studies in his garage with his middle school aged son