Theoretical physicist John Pendry, a leader in transformation optics, is known for describing the possibility of a “cloaking device”. Across his career Pendry has worked extensively on electronic and structural properties of surfaces, developing the theory of low-energy diffraction and of electronic surface states. He produced a complete theory of the statistics of transport in one-dimensional systems, and his focus on photonic materials led to his research in the electromagnetic properties of metamaterials. Read more about John Pendry on SPIE News, or read about other SPIE Luminaries.