Solid-state research is a field of study that focuses on the physical properties and behavior of materials in a solid state, such as crystals, polymers, and composites. This area of research explores the electrical, magnetic, thermal, and optical properties of solids, as well as their structural and mechanical properties. Solid-state researchers often investigate the relationships between the atomic or molecular structure of a material and its macroscopic properties, with applications ranging from electronics and semiconductors to materials science and nanotechnology.