{
  "id": "2310.07531",
  "version": "v1",
  "published": "2023-10-11T14:34:05.000Z",
  "updated": "2023-10-11T14:34:05.000Z",
  "title": "Partial and complete wetting of droplets of active Brownian particles",
  "authors": [
    "Francesco Turci",
    "Robert L. Jack",
    "Nigel B. Wilding"
  ],
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.soft"
  ],
  "abstract": "We study wetting droplets formed of active Brownian particles in contact with a repulsive potential barrier, in a wedge geometry. Our numerical results demonstrate a transition between partially wet and completely wet states, as a function of the barrier height, analogous to the corresponding surface phase transition in passive fluids. We analyse partially wet configurations characterised by a nonzero contact angle $\\theta$ between the droplet surface and the barrier, including the average density profile and its fluctuations. These findings are compared with two equilibrium systems: a Lennard-Jones fluid and a simple contour model for a liquid-vapour interface. We locate the wetting transition where $\\cos(\\theta)=1$, and the neutral state where $\\cos(\\theta)=0$. We discuss the implications of these results for possible definitions of surface tensions in active fluids.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-10-11T14:34:05.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "active brownian particles",
      "complete wetting",
      "corresponding surface phase transition",
      "nonzero contact angle",
      "analyse partially wet configurations"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}