Fluorescent nanoparticle compositions, methods and devices

摘要: Various compositions, methods, and devices are provided that use fluorescent nanoparticles, which can function as markers, indicators, light sources. The nanoparticles be formed from a fluorophore core surrounded by biocompatible shell, such silica shell. In one embodiment, the delivered to tissue mark tissue, enable identification location of and/or illuminate an area surrounding tissue. another used on device or implant locate in body, indicate orientation implant, implant. also provide therapeutic effect.