Chuanwu Xi is a molecular microbiologist and microbial ecologist. His research focuses on biofilms, water quality and human health. Research in his laboratory uses molecular and genomic tools to understand molecular mechanisms of persistence and resistance of pathogens in natural, engineered and industrial environments; transmission routes of pathogens from the environment to host and their impacts on health of general public and industrial workers. He is particularly interested in the role of biofilms in these processes. In addition, he uses advanced imaging tools and nanotechnology to study biofilm development, the spread of antibiotic resistance, and control of biofilm-related infections.