Bacteria are the most ubiquitous life-forms on Earth, and are studied extensively to gain insight into their function and understand how they interact with their environment. In recent years, bacterial biophysics has added a new dimension to this research by using the tools of physics to investigate the quantitative principles that underpin these cellular systems. This book provides a modern and cohesive introduction to bacterial biophysics, with a focus on biofilms, slimes and capsules. In the first of three sections, key techniques and models from the physical sciences that can be applied to bacterial problems are presented. Section 2 then provides a bacterial microbiology primer for physical scientists and an examination of single-cell phenomena. The final section explores interacting bacteria and biofilms from a physical perspective. Ideal for physics graduates interested in this important field, this book is also relevant for researchers in physical chemistry, bioengineering, mathematics and microbiology.