Constructing and decoding tree-ring-like surface patterns on self-assembled polymer platelets

Nature Communications, Published online: 20 August 2026; doi:10.1038/s41467-026-76483-7 Control of surface patterns in assembled nanostructures is desirable, but challenging to achieve. Here, the authors report the development of a flow-based crystallisation-driven self-assembly method for the preparation of polymer platelets with controlled 3D surface patterns.