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. 2019 Jun 17;9:8675. doi: 10.1038/s41598-019-45132-z

Figure 2.

Figure 2

FESEM images of ion beam treated PTFE samples at beam energy and angle of incidence of (a) 300 eV, 40°, (b) 300 eV, 70°, (c) 800 eV, 40° and (d) 800 eV, 70°. High magnification images are shown in insets. Ion beam treatment time is 60 s.