{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T15:05:09Z","timestamp":1789571109912,"version":"build-2803163510"},"reference-count":50,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T00:00:00Z","timestamp":1789516800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T00:00:00Z","timestamp":1789516800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100000185","name":"Defense Advanced Research Projects Agency","doi-asserted-by":"publisher","award":["HR0011727183D18AP00010"],"award-info":[{"award-number":["HR0011727183D18AP00010"]}],"id":[{"id":"10.13039\/100000185","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2021YFA1500800"],"award-info":[{"award-number":["2021YFA1500800"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["U24A2013"],"award-info":[{"award-number":["U24A2013"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["12125407"],"award-info":[{"award-number":["12125407"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["RS\u20102026\u201025487626"],"award-info":[{"award-number":["RS\u20102026\u201025487626"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Small"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    In oxide superlattices, the combined effect of strain and interlayer electrostatic interactions enables the stabilization of exotic polar topologies. Yet, their collective role in the mechanical response of the system remains largely unexplored. Here, we show that a high density of polar textures forms an elastically constrained network that stiffens the heterostructure. In our model system of BiFeO\n                    <jats:sub>3<\/jats:sub>\n                    \/SrTiO\n                    <jats:sub>3<\/jats:sub>\n                    superlattices, systematic variation of periodicity tunes the balance between the depolarization field and interlayer coupling, driving a deterministic transition from smeared polar nanodomains to a topology\u2010rich regime and then to a labyrinthine multidomain state. Transmission electron microscopy reveals that this topological evolution is accompanied by pronounced strain heterogeneity in the BiFeO\n                    <jats:sub>3<\/jats:sub>\n                    layer and an induced tetragonality in the dielectric spacer, suggesting a more active role played by the dielectric layer in the topological phase evolution. Remarkably, nanoindentation experiments show that the topology\u2010rich configuration exhibits a prominent 20% increase in the effective elastic modulus compared to the multidomain state. Further, Monte Carlo simulations show how the topology governs mechanical response through topological defect\u2010induced stiffening. These results establish a jammed\u2010like scenario in which dense topological defects collectively restrict stress accommodation pathways and highlight periodicity as a design parameter for topology\u2010mediated response in polar oxide superlattices.\n                  <\/jats:p>","DOI":"10.1002\/smll.75806","type":"journal-article","created":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T14:38:19Z","timestamp":1789569499000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Polar Topology Network Induces Elastic Stiffening in Ferroelectric Oxide Superlattices"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-0847-2111","authenticated-orcid":false,"given":"Mohammad Moein","family":"Seyfouri","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering UNSW Sydney  Sydney New South Wales Australia"},{"name":"X\u2010ray facilities Mark Wainwright Analytical 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