{
  "name": "gold_512_npy_bin4",
  "source": "Arina 4D-STEM, Nano Titan, session 20260423, gold_004_master.h5",
  "date": "2026-04-23",
  "sample": "gold nanoparticles",
  "shape": [512, 512, 48, 48],
  "dtype": "uint16",
  "permission": {
    "received": true,
    "from": ["Sangjoon Lee"],
    "collectors": ["Sangjoon Lee"],
    "date": "2026-04-23"
  },
  "sampling": [0.5, 0.5, 1.84, 1.84],
  "units": ["A", "A", "mrad", "mrad"],
  "voltage_kV": 300,
  "semiangle_mrad": 30,
  "camera_length_mm": 91
}