Lanthanide-doped nanoparticles exhibit exceptional photon conversion capabilities and photostability, making them promising tools for biomedical imaging, sensing, and theranostics. A new review published in PhotoniX Life summarizes recent advances in their synthesis, optical engineering, and potential clinical applications, while addressing challenges in biosafety and regulatory approval.

Zhejiang University researchers introduce a universal 'best-matched absorption' criterion to select optimal near-infrared (NIR) imaging windows for fluorescence wide-field microscopy. This work solves the critical gap of scattered light background in high numerical aperture (NA) systems, clarifies how system NA, imaging depth and probe brightness shift the optimal window, and offers tailored strategies for complex in vivo imaging scenarios, greatly improving image contrast and penetration for biomedical research and clinical applications.

MIT researchers created a technique that captures chemical arrangements across materials to improve predictions of how metal alloys and other complex materials will behave.