Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase Fernández-Rico, Carla Dullens, Roel P. A. ddc:540 Hierarchically self-assembled materials—structures with order at multiple length scales—can be found everywhere. Examples range from collagen structures in human bones to engineered photonic materials. These structures usually assemble from monodisperse microscopic building blocks that interact via complex directional interactions. In this work, we show that hierarchical materials can, in fact, also be assembled from polydisperse building blocks and by entropic interactions alone. Our simple yet powerful assembly mechanism opens up avenues toward rationally exploiting the often undesired polydispersity of colloidal building blocks for programming entropy-driven self-assembly of hierarchical materials. National Academy of Sciences 2021 info:eu-repo/semantics/article doc-type:article text http://purl.org/coar/resource_type/c_2df8fbb1 https://research-explorer.ista.ac.at/record/22211 Fernández-Rico C, Dullens RPA. Hierarchical self-assembly of polydisperse colloidal bananas into a two-dimensional vortex phase. <i>Proceedings of the National Academy of Sciences</i>. 2021;118(33). doi:<a href="https://doi.org/10.1073/pnas.2107241118">10.1073/pnas.2107241118</a> eng info:eu-repo/semantics/altIdentifier/doi/10.1073/pnas.2107241118 info:eu-repo/semantics/altIdentifier/issn/0027-8424 info:eu-repo/semantics/altIdentifier/e-issn/1091-6490 info:eu-repo/semantics/altIdentifier/pmid/34389681 https://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess