Sample bias

{
  "id": "MLC-T-CHM-010492",
  "term": "Sample bias",
  "field": "Chemistry",
  "definition": "An electric potential applied to the whole sample or to part of it, measured against the potential of the sample holder. In surface analysis a bias is applied, for example, to accelerate secondary ions away from the sample or to shift the kinetic energy of emitted electrons. It differs from the sample voltage, which is the potential of the sample referenced to ground.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "sample voltage"
  ],
  "references": [
    "PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1812 (https://doi.org/10.1515/pac-2019-0404)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/sample-bias/"
}