Figure 6
From: Spectral characteristics of cotton seeds treated by a dielectric barrier discharge plasma
Representative SEM images of the surfaces of (a) untreated cotton seeds and (b,c) cotton seeds treated for 27 min with N2 plasma. Treatment of seeds with N2 plasma resulted in thinning of the ridges and the presence of a larger number of thin grooves, which was labeled by arrows. In addition, cracks of width around 2 µm could be observed in red mark area.
