Near‐Infrared Mechanoluminescence from Cr3+‐Doped Spinel Nanoparticles for Potential Oral Diseases Detection

Mechanoluminescence (ML) phosphors have found various promising utilizations such as in non-destructive stress sensing, anti-counterfeiting, and bio stress imaging. However, the reported NIR MLs have predominantly been limited to bulky particle size and weak ML intensity, hindering the further practical applications. For this regard, a nano-sized ZnGa