Editorial for focus on emerging processes and applications of atomic and molecular layer deposition.

This Focus aims to provide a platform for the latest research progress in atomic and molecular layer deposition (ALD and MLD), which collects 10 original research articles and 2 review papers. The original research articles present new precursors, new processes, and new applications. The review papers give a timely summary on the surface chemistry of metal ALD processes and flexible electronics resulting from ALD and MLD, respectively. This ensemble forms a valuable collection that advances our understanding and knowledge of ALD and MLD, and inspires the continued development of these valuable technologies.