Pith Number

pith:ES64IQ25

pith:2026:ES64IQ25FJAUPITXYF2HLREDKZ

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PACSim: A Flexible Simulation Framework for Polymer-Attenuated Coulombic Self-Assembly

Glen M. Hocky, John P. Marquardt, Michael S. Chen, Nicole Smina, Philipp H\"ollmer, Stefano Sacanna, Steven van Kesteren

PACSim is an open-source molecular dynamics framework for simulating polymer-attenuated Coulombic self-assembly of colloids.

arxiv:2605.12870 v1 · 2026-05-13 · cond-mat.soft · cond-mat.stat-mech · physics.chem-ph

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\pithnumber{ES64IQ25FJAUPITXYF2HLREDKZ}

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Claims

C1strongest claim

Here, we present an open-source simulation framework, PACSim, that enables MD simulation studies of assembly by PACS across a range of experimentally relevant scenarios.

C2weakest assumption

The assumption that the interaction potentials implemented in PACSim faithfully capture the polymer-brush attenuation and Coulombic forces present in real PACS experiments, without post-hoc adjustments.

C3one line summary

PACSim is a new open-source MD simulation framework on OpenMM for studying polymer-attenuated Coulombic self-assembly of colloids.

References

55 extracted · 55 resolved · 0 Pith anchors

[1] U. Gasser, E. R. Weeks, A. Schofield, P. N. Pusey, and D. A. Weitz, Real-space imaging of nucleation and growth in colloidal crystallization, Science 292, 258 (2001) 2001

[2] T. Hueckel, G. M. Hocky, and S. Sacanna, Total synthesis of colloidal matter, Nat. Rev. Mater. 6, 1053 (2021) 2021

[3] S. Zang, A. W. Hauser, S. Paul, G. M. Hocky, and S. Sacanna, Enabling three-dimensional real-space analy- sis of ionic colloidal crystallization, Nat. Mater. 23, 1131 (2024) 2024

[4] ´E. Ducrot, M. He, G.-R. Yi, and D. J. Pine, Colloidal al- loys with preassembled clusters and spheres, Nat. Mater. 16, 652 (2017) 2017

[5] Y. Wang, I. C. Jenkins, J. T. McGinley, T. Sinno, and J. C. Crocker, Colloidal crystals with diamond symmetry at optical lengthscales, Nat. Commun. 8, 14173 (2017) 2017

Receipt and verification

First computed	2026-05-18T03:09:11.384601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24bdc4435d2a4147a277c17475c48356546d2ab7cf1906f253d2a4614030b85e

Aliases

arxiv: 2605.12870 · arxiv_version: 2605.12870v1 · doi: 10.48550/arxiv.2605.12870 · pith_short_12: ES64IQ25FJAU · pith_short_16: ES64IQ25FJAUPITX · pith_short_8: ES64IQ25

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ES64IQ25FJAUPITXYF2HLREDKZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 24bdc4435d2a4147a277c17475c48356546d2ab7cf1906f253d2a4614030b85e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcf421ea2b4edf90e14a19782a57a97fbaac355781fb513c61d0b680d6834112",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "physics.chem-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2026-05-13T01:29:06Z",
    "title_canon_sha256": "3e4a68abcce14a6ed7a7680f8745fce5fa0442798e3079b17d49cd116a8ad848"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12870",
    "kind": "arxiv",
    "version": 1
  }
}