Femtosecond laser-induced periodic surface structures (LIPSS) have been extensively studied over the past few decades. In particular. the period and groove width of high-spatial-frequency LIPSS (HSFL) is much smaller than the diffraction limit. making it a useful method for efficient nanomanufacturing. https://www.ealisboa.com/top-save-RE-DESIGNED-Strikketoy-oppbevaring-Prosjekt-27-Sort-100-Skinn-great-save/