Aerosol gels are a type of material formed by dispersing a gel in a gas, typically air. They consist of a network of solid particles that are suspended in a liquid, which is then transformed into a gas phase. This process creates a lightweight, porous structure that can be used in various applications, including insulation, catalysis, and drug delivery. These materials are known for their high surface area and low density, making them useful in fields like materials science and nanotechnology. Aerosol gels can be tailored for specific properties, allowing researchers to develop innovative solutions for environmental and industrial challenges.