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pith:MI4E6E3X

pith:2026:MI4E6E3XKYGES5JXBJWCGHTQEB

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Wall accumulation of confined active Janus colloids due to effective active diffusivity

Alicia Boymelgreen, Jarrod Schiffbauer, Sandeep Ramteke

Active Janus colloids confined between parallel walls accumulate at the boundaries because persistent stochastic turning about a small out-of-plane angle generates an effective cross-channel drift and diffusion.

arxiv:2605.12860 v1 · 2026-05-13 · cond-mat.soft · cond-mat.stat-mech

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Claims

C1strongest claim

Persistent stochastic turning about a small out-of-plane angle results in a cross-channel effective drift and diffusion. The drift governs the dominant timescale and the diffusion is strong enough to provide significant accumulation on the bottom wall despite a mean upward orientational bias.

C2weakest assumption

That the orientation dynamics are accurately captured by an overdamped Ornstein-Uhlenbeck turning process with a small mean out-of-plane angle, allowing the effective cross-channel drift and diffusion to be derived directly from the measured relaxation rate without additional free parameters.

C3one line summary

Confined electrokinetically driven Janus colloids accumulate at walls via effective active diffusivity from persistent out-of-plane stochastic turning, producing exponential wall-population growth and single-timescale data collapse.

References

21 extracted · 21 resolved · 0 Pith anchors

[1] Here, U(E) is determined using the mobility, µ ICEP = 1

[2] E. M. Purcell, Life at low reynolds number, American Jour nal of Physics 45, 3 (1977). 10 1977

[3] W. Ebeling, F. Schweitzer, and B. Tilch, Active brownian particles with energy depots mod- eling animal mobility, BioSystems 49, 17 (1999) 1999

[4] Z¨ ottl and H 2023

[5] H. C. Berg and D. A. Brown, Chemotaxis in Escherichia coli analysed by three-dimensional tracking, Nature 239, 500 (1972) 1972

Receipt and verification

First computed	2026-05-18T03:09:11.634584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62384f1377560c4975370a6c231e7020448589611aaf9131dfa3eeced84872ef

Aliases

arxiv: 2605.12860 · arxiv_version: 2605.12860v1 · doi: 10.48550/arxiv.2605.12860 · pith_short_12: MI4E6E3XKYGE · pith_short_16: MI4E6E3XKYGES5JX · pith_short_8: MI4E6E3X

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MI4E6E3XKYGES5JXBJWCGHTQEB \
  | 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: 62384f1377560c4975370a6c231e7020448589611aaf9131dfa3eeced84872ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74ecd5b1f0353f757c6dc45ec2c193ded125e7b6396a93ebf4fb8ca43c4762b7",
    "cross_cats_sorted": [
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2026-05-13T01:09:41Z",
    "title_canon_sha256": "f497960ad814326416a189ed5e67fa60ed253cab9858928877e7ff53e483819e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12860",
    "kind": "arxiv",
    "version": 1
  }
}