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Here, a unique nanobrush\u2010based Y\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    \/CeO\n                    <jats:sub>2<\/jats:sub>\n                    superlattice structure with an average height of 75\u00a0nm is fabricated using diffusion\u2010limited laser epitaxy. Atomic\u2010resolution structural characterization reveals that each Y\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>3<\/jats:sub>\n                    \/CeO\n                    <jats:sub>2<\/jats:sub>\n                    superlattice nanobrush exhibits self\u2010organized heterogeneous interfaces along (111) crystallographic orientation. Notably, the nanobrush memristor exhibits unipolar switching with a R\n                    <jats:sub>ON<\/jats:sub>\n                    \/R\n                    <jats:sub>OFF<\/jats:sub>\n                    ratio \u223c12 higher than film\u2010based superlattice devices, plus excellent endurance (1000 cycles) and retention (10\n                    <jats:sup>4<\/jats:sup>\n                    s). The enhanced resistive switching in nanobrush memristors likely stems from their brush geometry and space charge enrichment at chevron\u2010like heterointerfaces. XPS analysis confirms abundant oxygen vacancies in the nanobrush\u2010based superlattices, generating substantial mobile ionic defects. The vertically\u2010aligned nanobrush geometry provides abundant conduction pathways for oxygen vacancy migration. Ultimately, these fluorite\u2010bixbyite superlattice nanobrushes demonstrate structurally engineered, energy\u2010efficient, noise\u2010resistant memory for high\u2010density neuromorphic circuits.\n                  <\/jats:p>","DOI":"10.1002\/smtd.202502421","type":"journal-article","created":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T07:53:44Z","timestamp":1777449224000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Oxygen\u2010Vacancy\u2010Engineered Y\n                    <sub>2<\/sub>\n                    O\n                    <sub>3<\/sub>\n                    \/CeO\n                    <sub>2<\/sub>\n                    Nanobrush Superlattices via Laser Heteroepitaxy: Toward High\u2010Performance Memristors"],"prefix":"10.1002","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2852-4485","authenticated-orcid":false,"given":"Shuowen","family":"Zhang","sequence":"first","affiliation":[{"name":"Moganshan Institute ZJUT  Deqing China"},{"name":"College of Mechanical Engineering Zhejiang University of Technology  Hangzhou China"},{"name":"Institute of Laser Advanced Manufacturing Zhejiang University of Technology  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling","family":"Wu","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering Zhejiang University of Technology  Hangzhou China"},{"name":"Institute of Laser Advanced Manufacturing Zhejiang University of Technology  Hangzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pengbo","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering Zhejiang University of Technology  Hangzhou 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