The sixth conference in the Nanostructured Thin Films series took place in San Diego (California, USA) between the 28th and 29th of August 2013. Approximately 44 works were submitted in total. The range of topics that were presented included fabrication, modeling and homogenization, biomimetic thin films, sensing, functional nanostructured thin films, solar cells, characterization, and plasmonics. In addition, an opening keynote session was devoted to the rapidly developing topic of biomimetics. The presented works were spread over nine sessions of oral presentations and a poster session. The presenters came from all parts of the world; they had a variety of backgrounds in engineering and scientific disciplines; and while some were new to our area, others were familiar faces from previous Nanostructured Thin Films conferences.