Contents: (Small 2/2017)

Two dimensional arrays of nanoparticles often exhibit interesting optical and chemical properties, but are difficult to prepare. Large freestanding sheets of 2-D nanoparticle arrays anchored onto flexible polymer substrates are fabricated by S. E. J. Bell and co-workers in article number 1602163, through a simple and elegant one-pot selfassembly technique. The particles are partly exposed even in the films, so they allow construction of flexible chemically-active plasmonic devices.