Sensitive Water Probing through Nearly Monochromatic Red Emission in Er~(3+)-Enriched Core-Shell Upconversion Nanoparticles

摘要

Water is not only the most precious resource on earth, but also the most important component of the organism, which is vital to life. However, sometimes even a very small amount of water is dangerous. When water is present in fuels, organic solvents, it can sometimes cause serious consequences. Therefore, moisture monitoring and measurement play a very important role in basic research, industrial synthesis and etc.