Figure 6
(a–d) SEM images of the Ge particles and structures after 5, 10, 20, 40 passages of laser irradiation in water, respectively, showing the gradual increase of number of SMS with increasing passage number (e–h) SEM images of anisotropic structures obtained after 5, 10, 20, 40 passages of laser irradiation in water, respectively, showing that these anisotropic structures can be found after each passage, indicating the bisection mechanism.
