Molecular Sensing Using Aggregation of Gold Nanoparticles.

Summary: Imagine if we could see tiny molecules, like signs of disease, just by looking at a color change! Scientists are doing this using tiny specks of gold called gold nanoparticles. When these gold specks find the specific molecule they are looking for, they clump together. This clumping changes their color or how they bounce light. Doctors and scientists can use this neat trick to build super-sensitive tests. This paper reviews how these gold sensors are made and how they are used to spot important molecules quickly and easily.