Materials Scientists are similar to materials engineers. They use principles of engineering, physics, and chemistry to design new materials with certain properties. There are many specialties in this field including metals, ceramics, semiconductors, biomaterials, and nanotechnology. These scientists research the structure and properties of different materials, and use the information to develop new products or improve old ones. A bachelor’s degree in chemistry, physics, or engineering is needed for a career in materials science, and a doctorate is required for research positions.