Selective laser etching (SLE) technology enables the fabrication of true 3D glass structures with complex architecture, for instance, fullerene molecule‑like structures. By using the SLE technique, high selectivity and low surface roughness can be achieved, both of which create the possibility of complex architecture high-aspect ratio structure production. With this technology, the surface roughness of the etched surfaces is typically around 200 nm (RMS). A fullerene molecule-like structure demonstration proves that SLE is suitable for fabricating high-aspect ratio porous complex structures.