Amorphous Silicon Nitride Nanoparticles: Properties, Synthesis, and Applications Introduction Amorphous silicon nitride nanoparticles (Si³N4 NPs) are non-crystalline forms of silicon nitride with unique properties distinct from their crystalline counterparts. Silicon nitride itself is a ceramic material known for its high hardness, thermal stability, and mechanical strength. When reduced to the nanoscale and in an amorphous...