Gas Anti Solvent Recrystallization (GAS) is a technique that exploits the principles of solubility and recrystallization to produce nanoparticles. In the GAS process, a supercritical or near-supercritical gas, often carbon dioxide, is used as an anti-solvent. This gas reduces the solubility of a solute in a solvent, causing the solute to precipitate out as fine particles.
