Huge Enhancement of Green Persistent Mechanoluminescence of SrAl 2 O 4 :Dy 3+ ‐Eu 2+ by Nd 3+ for Sound‐to‐Light Conversion, Handwriting Visualization, Force Sensing, and Luminescence Thermometry

doping as an effective approach to enhance ML performance in the studied materials and open pathways for their integration into next-generation optoelectronics, sensing, and security technologies.