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  "path": "/releases/2026/04/260421042755.htm",
  "publishedAt": "2026-04-21T08:49:51.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "A light-sensitive crystal is opening the door to a new era of “light-written” technology. Arsenic trisulfide can be reshaped and permanently altered using simple light, creating ultra-fine optical patterns without expensive manufacturing tools. Scientists even etched a nanoscale portrait of Einstein and high-density patterns that could act as secure optical signatures. This breakthrough could power everything from advanced sensors to next-generation AR devices.",
  "title": "Scientists sculpt Einstein onto a crystal using only light"
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