'Nanoparticles' are defined as solid particles or particle dispersions with a size ranging from 10 to 1,000 nm. Dr. I&B Co., Ltd.'s nanoparticles, which have a unique cubic structure, are porous materials that can carry toxic substances to deliver the drugs only to malignant cells, or use the photothermal effect (PTT) that generates heat momentarily from light of a specific wavelength to directly destroy malignant cells and bacteria.