{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T14:14:42Z","timestamp":1785420882952,"version":"3.56.0"},"reference-count":55,"publisher":"American Physical Society (APS)","issue":"5","license":[{"start":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T00:00:00Z","timestamp":1779840000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005627","name":"Universit\u00e9 de Li\u00e8ge","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100005627","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.aps.org"],"crossmark-restriction":true},"short-container-title":["Phys. Rev. E"],"accepted":{"date-parts":[[2026,5,8]]},"abstract":"<jats:p>\n                    We investigate a trapping mechanism for passive Brownian particles based on mixtures with self-propelled dipolar colloids. Active dipoles, whose magnetic moment is oriented perpendicularly to their propulsion direction, spontaneously form dynamic chains that collapse into clusters through dipole-dipole interactions. These transient structures efficiently capture nearby passive particles, forming dense phases at relatively low global packing fractions. Using Brownian dynamics simulations, we analyze how the capture efficiency depends on the P\u00e9clet number (\n                    <a:math xmlns:a=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <a:mi>Pe<\/a:mi>\n                    <\/a:math>\n                    ) and dipolar interaction strength (\n                    <b:math xmlns:b=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <b:mi>\u03bb<\/b:mi>\n                    <\/b:math>\n                    ). We demonstrate that an external magnetic field, applied briefly to align the active dipoles, significantly enhances trapping efficiency, with capture fractions exceeding 50% under optimal conditions. Our results reveal a nontrivial competition between activity and dipolar forces, governed by the ratio\n                    <c:math xmlns:c=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                      <c:mrow>\n                        <c:mi>\u03bb<\/c:mi>\n                        <c:mo>\/<\/c:mo>\n                        <c:mi>Pe<\/c:mi>\n                      <\/c:mrow>\n                    <\/c:math>\n                    , and offer insights into designing self-organized trapping strategies for passive colloids.\n                  <\/jats:p>","DOI":"10.1103\/lfch-5drf","type":"journal-article","created":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T09:55:43Z","timestamp":1778579743000},"update-policy":"https:\/\/doi.org\/10.1103\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Magnetically assisted trapping of passive colloids by active dipolar chain"],"prefix":"10.1103","volume":"113","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-4137-4742","authenticated-orcid":true,"given":"A.","family":"Compagnie","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/024z2rq82","id-type":"ROR","asserted-by":"publisher"}],"name":"Heinrich-Heine-Universit\u00e4t"},{"id":[{"id":"https:\/\/ror.org\/00afp2z80","id-type":"ROR","asserted-by":"publisher"}],"name":"University of Li\u00e8ge"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1824-2011","authenticated-orcid":true,"given":"N.","family":"Vandewalle","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00afp2z80","id-type":"ROR","asserted-by":"publisher"}],"name":"University of Li\u00e8ge"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7109-8311","authenticated-orcid":true,"given":"E.","family":"Opsomer","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/00afp2z80","id-type":"ROR","asserted-by":"publisher"}],"name":"University of 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All rights are reserved, including those for text and data mining, AI training, and similar technologies.","name":"copyright_statement","label":"Copyright statement","group":{"name":"copyright","label":"copyright"}},{"value":"2026","name":"copyright_year","label":"Copyright year","group":{"name":"copyright","label":"copyright"}},{"value":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/","name":"creative_commons_license","label":"Creative Commons license","group":{"name":"licenses","label":"Licenses"}},{"value":"\u00a92026 The authors","name":"copyright_holder","label":"Copyright holder","group":{"name":"copyright","label":"copyright"}}],"article-number":"055421"}}