Surface charge density

{
  "id": "MLC-T-CHM-011629",
  "term": "Surface charge density",
  "field": "Chemistry",
  "definition": "The quantity of electric charge present per unit area of a surface, denoted by the Greek letter sigma (σ). It describes how charge is distributed across a two-dimensional interface, such as the surface of a colloid particle or an electrode. The standard SI unit for surface charge density is coulombs per square meter (C/m²).",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "electric charge"
  ],
  "references": [
    "Green Book, 2nd ed., p. 14 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/surface-charge-density/"
}