{
  "abstract": "Magnetic actuation scales with a particle's magnetic moment, yet practical colloidal suspensions remain superparamagnetic or weakly magnetized, a permanent dipole drives a near contact attraction growing as the square of the moment, binding particles irreversibly. Here we show that this constraint depends not only on how much magnetic material a particle carries, but on where it sits. Partitioning a fixed moment M into N internal elements leaves the far field interaction, and every actuation force, unchanged while suppressing the near-field pair energy by 1/N. As we show in our experiments across 57 samples and three geometries, stability collapses onto a single $\\sim M^{2}/N$ boundary, raising the accessible dipolar energy scale nearly 150-fold. A liquid-phase analogue of magnetic force microscopy images the engineered energy landscape directly. The resulting colloids outrun size-matched superparamagnetic beads in weak fields far from a magnetic source, suggesting their applicability in hard to reach places. Together, these results open a new operating regime for colloidal manipulation, with impactful implications in microfluidics and drug delivery.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.14247",
  "author_total": 4,
  "authors": [
    {
      "name": "Paramita Modak"
    },
    {
      "name": "Priyadharshini M"
    },
    {
      "name": "Ankur Jaiswar"
    },
    {
      "name": "Ambarish Ghosh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e9x2e5s89nm0r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.14247",
  "fulltext_url": null,
  "id": "e9x2e5s89nm0r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.14247",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.soft"
    ],
    [
      "openalex",
      "3104|Micro and Nano Robotics"
    ]
  ],
  "openalex": "W7221774837",
  "pdf_url": "https://arxiv.org/pdf/2610.14247",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e9x2e5s89nm0r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.14247",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.14247"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Partitioning the magnetization raises the stability limit of ferromagnetic colloids",
  "title_text": "Partitioning the magnetization raises the stability limit of ferromagnetic colloids",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/e9x2e5s89nm0r",
  "venue": "arXiv",
  "versions": []
}