materials_science/metadata.json

{
  "description": "Advanced materials research and development",
  "subcategories": [
    "metamaterials",
    "exotic_matter_states",
    "quantum_dots",
    "topological_materials",
    "smart_materials",
    "energy_crystals",
    "field_containment",
    "high_temp_superconductors"
  ]
}