Solvothermal synthesis is a method used to create materials, particularly nanoparticles and crystals, by dissolving precursors in a solvent and heating the mixture in a sealed container. This process allows for high temperatures and pressures, which can enhance the reaction rates and improve the quality of the resulting materials. The technique is commonly applied in the fields of chemistry and materials science, enabling the production of complex structures like metal-organic frameworks and nanocomposites. By controlling factors such as temperature, pressure, and solvent type, researchers can tailor the properties of the synthesized materials for specific applications.