{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T15:38:35Z","timestamp":1785425915172,"version":"3.56.0"},"reference-count":25,"publisher":"Optica Publishing Group","issue":"15","license":[{"start":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T00:00:00Z","timestamp":1784160000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T00:00:00Z","timestamp":1784160000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["62105320"],"award-info":[{"award-number":["62105320"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002367","name":"Chinese Academy of Sciences","doi-asserted-by":"crossref","award":["YSBR-049"],"award-info":[{"award-number":["YSBR-049"]}],"id":[{"id":"10.13039\/501100002367","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/034t30j35","id-type":"ROR","asserted-by":"publisher"}]},{"name":"National Key Research and Development Program of China","award":["2021YFA1400700"],"award-info":[{"award-number":["2021YFA1400700"]}]},{"DOI":"10.13039\/501100017668","name":"Key Research and Development Program of Anhui Province","doi-asserted-by":"crossref","award":["202304a05020013"],"award-info":[{"award-number":["202304a05020013"]}],"id":[{"id":"10.13039\/501100017668","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,8,1]]},"abstract":"<jats:p>We propose a polarization-engineered displacement sensing scheme that connects the three-dimensional polarization landscape of a tightly focused field with the scattering C-points of an embedded dipolar scatterer. The particle\u2019s displacement is encoded as angular shifts of the C-points in the far field. To engineer local polarization states, we first use circularly polarized light to localize the spin-rotating polarization landscape at the focal center, yielding a sensitive, nearly linear evolution of C-points. Furthermore, by employing structured light, we confine the polarization ellipticity variation to the focal center and enable active tuning of displacement sensitivity. Our work demonstrates that engineering of focal-field polarization landscapes via incident light modulation enables tunable high-sensitivity displacement measurement, with potential applications in precision metrology and nanoscale optical sensing.<\/jats:p>","DOI":"10.1364\/ol.606079","type":"journal-article","created":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T12:02:45Z","timestamp":1783339365000},"page":"4084","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Polarization-engineered displacement sensing of nanoparticles via tracking scattering C-points"],"prefix":"10.1364","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-0821-284X","authenticated-orcid":true,"given":"Han","family":"Liu","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04c4dkn09","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-2223-066X","authenticated-orcid":true,"given":"Zheng","family":"Xi","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04c4dkn09","id-type":"ROR","asserted-by":"publisher"}]},{"name":"University of Science and Technology of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,7,16]]},"reference":[{"key":"ol-51-15-4084-R1","doi-asserted-by":"publisher","first-page":"11286","DOI":"10.1038\/ncomms11286","type":"journal-article","volume":"7","author":"Neugebauer","year":"2016","journal-title":"Nat. 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