{
  "id": "1910.00804",
  "version": "v1",
  "published": "2019-10-02T07:34:27.000Z",
  "updated": "2019-10-02T07:34:27.000Z",
  "title": "Low-Temperature Friction of Suspended Graphene: Negative friction?",
  "authors": [
    "Zhao Wang"
  ],
  "comment": "5 Figures",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.mtrl-sci",
    "cond-mat.stat-mech"
  ],
  "abstract": "Using molecular dynamics simulations, we probe a suspended graphene layer by a diamond-like-carbon tip at various temperatures. The force acting on the tip in the sliding direction is measured to be negative at liquid-helium temperature. This negative force is found to be associated with a spontaneous lateral oscillation of the suspended graphene in favor of a low interface potential corrugation. Our hypothesis is that, at low temperature, this oscillation induces an important hidden contribution to the friction force in the lateral direction. This functions as a particular energy dissipation mechanism at nanoscale.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-10-02T07:34:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "suspended graphene",
      "low-temperature friction",
      "negative friction",
      "low interface potential corrugation",
      "important hidden contribution"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}