Chemical engineering is a branch of engineering that studies the operation and design of chemical facilities, as well as strategies for increasing output. Chemical engineers design cost-effective commercial techniques for transforming raw materials into usable goods. Chemists, physicists, mathematicians, biologists, and economists employ chemical engineering principles to efficiently use, create, design, transport, and transform energy and materials. Chemical engineers' work can span from small-scale laboratory experiments with nanotechnology and nanomaterials to large-scale industrial processes that convert chemicals, energy, raw materials, living cells and microbes into useful forms and products. Chemical engineers are in high demand due to the enormous number of sectors that rely on chemical and material synthesis and processing. Chemical engineers have increased prospects in pharmaceuticals, biotechnology, electronic device fabrication, and environmental engineering, in addition to traditional professions in the chemical, energy, and oil industries.