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XPANCEO Research on Natural Science LLC


Arsenic trisulfide (As2S3): A “photosensitive clay” for nano-optics, shaped by a simple laser

Researchers have discovered a novel optical material, arsenic trisulfide (As2S3), that can be permanently modified by light and sculpted at the nanoscale level. This material exhibits an unusually large light-induced refractive-index change, enabling the creation of extremely fine optical fingerprints.

SourceXPANCEO Research on Natural Science LLC·JournalProceedings of the National Academy of Sciences·DateApr 20, 2026

XPANCEO develops high-precision passive eye-tracking technology for smart contact lenses

The new pattern-based technology offers two key advantages: simplified setup eliminates infrared illumination and enables universal deployment across multiple contexts. This system enables real-time detection of subtle eye movements in clinical applications, including neurological conditions such as Parkinson's and Alzheimer's diseases.

SourceXPANCEO Research on Natural Science LLC·JournalAdvanced Functional Materials·DateApr 8, 2026