Figure 4
SEM images of the cross-sections of the PLLA sheet irradiated by 515 nm wavelength with different pulse spacing: (a) GR_30; (b) enlarged image; (c) GR_20; (d) enlarged image.
Figure 4 | Scientific Reports
SEM images of the cross-sections of the PLLA sheet irradiated by 515 nm wavelength with different pulse spacing: (a) GR_30; (b) enlarged image; (c) GR_20; (d) enlarged image.
