Contrast

{
  "id": "MLC-T-CHM-002515",
  "term": "Contrast",
  "field": "Chemistry",
  "definition": "The steepness of a resist's response to exposure dose, showing how sharply it separates exposed from unexposed regions once developed. A high value means an abrupt change from soluble to insoluble material and so well-defined patterns. It equals the slope of the straight part of the curve of remaining resist thickness plotted against the logarithm of exposure dose, usually symbolised γ.",
  "synonyms": [
    "contrast ratio"
  ],
  "subject": "Polymer",
  "see_also": [
    "contrast curve",
    "development",
    "resist"
  ],
  "references": [
    "PAC, 2020, 92, 1861. 'Terminology of polymers in advanced lithography (IUPAC Recommendations 2020)' on page 1869 (https://doi.org/10.1515/pac-2018-1215)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/contrast/"
}